Bump version and soname for 5.4.5.

The macro lzma_attr_visibility_hidden has to be defined to make
fastpos.h usable. The visibility attribute is irrelevant to
fastpos_tablegen.c so simply #define the macro to an empty value.

fastpos_tablegen.c is never built by the included build systems
and so the problem wasn't noticed earlier. It's just a standalone
program for generating fastpos_table.c.

Fixes: https://github.com/tukaani-project/xz/pull/69
Thanks to GitHub user Jamaika1.

.codespellrc

@@ -1,30 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-[codespell]
-
-# Skip all translation files and a few other autogenerated files.
-# The autotool files should have their typos fixed in the upstream, but
-# until then we will blacklist them here.
-# THANKS contains names, some do trigger codespell.
-skip = *.po,*.pot,./po4a/man,./doc/api,./configure,./autom4te.cache,./m4/libtool.m4,./build-aux/depcomp,./build-aux/ltmain.sh,./build-aux/config.guess,./build-aux/config.rpath,./m4/po.m4,./build-aux/config.sub,THANKS
-
-# Ignore false positive matching words. Ideally codespell would allow
-# ignoring words for specific files, but that does not appear to be
-# supported. Instead we need to hope we do not make these typos.
-# Additionally, the ignored words must be specified lower-case even though
-# some of the false positives only occurred upper-case.
-# ANS - used as a variable name in xzmore.in.
-# bu - groff syntax for creating a bullet list item, used in xz.1.
-# te - groff syntax, used in xz.1.
-# caf - command line options for tar example, used in xz.1.
-ignore-words-list = ans,bu,te,caf
-
-# Add extra dictionaries to help improvement comments, docs, etc.
-builtin = clear,rare,informal,usage,names
-
-# Always default to highest interactive level to avoid accidentally
-# changing a false positive or picking the wrong replacement.
-interactive = 3
-
-# Ignore a URL with debbugs.
-ignore-regex = \bhttps://debbugs\.gnu\.org\b

.gitattributes

@@ -1,8 +0,0 @@
-.gitattributes export-ignore
-.gitignore export-ignore
-
-/.codespellrc export-ignore
-/.github export-ignore
-
-/build-aux/ci_build.bash export-ignore
-/doc/SHA256SUMS export-ignore

.github/workflows/ci.yml

@@ -1,171 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
-#
-# Author: Jia Tan
-#
-#############################################################################
-
-name: CI
-
-on:
-  # Triggers the workflow on push or pull request events but only for the master branch
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-  # Allows running workflow manually
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  POSIX:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest]
-        build_system: [autotools, cmake]
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 20
-    steps:
-      - uses: actions/checkout@v4
-
-      ########################
-      # Install Dependencies #
-      ########################
-
-      # Install Autotools on Linux
-      - name: Install Dependencies
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: |
-            sudo apt-get update
-            sudo apt-get install -y autoconf automake build-essential po4a autopoint doxygen musl-tools valgrind
-
-      - name: Install Dependencies
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.build_system == 'autotools' }}
-        run: |
-            sudo apt-get install -y gcc-multilib
-
-      # Install Autotools on Mac
-      - name: Install Dependencies
-        if: ${{ matrix.os == 'macos-latest' && matrix.build_system == 'autotools' }}
-        run: brew install autoconf automake libtool po4a doxygen
-
-      # Install CMake on Linux
-      - name: Install Dependencies
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'cmake' }}
-        run: |
-            sudo apt-get update
-            sudo apt-get install -y build-essential cmake gettext doxygen musl-tools
-
-      # Install CMake on Mac
-      - name: Install Dependencies
-        if: ${{ matrix.os == 'macos-latest' && matrix.build_system == 'cmake' }}
-        run: brew install cmake gettext doxygen
-
-      ##################
-      # Build and Test #
-      ##################
-
-      # -b specifies the build system to use.
-      # -p specifies the phase (build or test) to help narrow down an error
-      #    if one occurs.
-      #
-      # The first two builds/tests are only run on Autotools Linux and
-      # affect the CFLAGS. Resetting the CFLAGS requires clearing the
-      # config cache between runs, so the tests that require CFLAGS are
-      # done first.
-      - name: Build 32-bit
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.build_system == 'autotools' }}
-        run: ./build-aux/ci_build.bash -b autotools -p build -m "gcc -m32"
-      - name: Test 32-bit
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.build_system == 'autotools' }}
-        run: |
-            ./build-aux/ci_build.bash -b autotools -p test -m "gcc -m32" -n 32_bit
-            cd ../xz_build && make distclean
-
-      # The sandbox must be disabled because it will prevent access to
-      # the /proc/ filesystem on Linux, which is used by the sanitizer's
-      # instrumentation.
-      - name: Build with -fsanitize=address,undefined
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: ./build-aux/ci_build.bash -b autotools -p build -f "-fsanitize=address,undefined" -d sandbox
-      - name: Test with -fsanitize=address,undefined
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: |
-            export UBSAN_OPTIONS=print_stacktrace=1:halt_on_error=1
-            ./build-aux/ci_build.bash -b autotools -p test -f "-fsanitize=address,undefined" -d sandbox
-            cd ../xz_build && make distclean
-
-      - name: Build with Valgrind
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: ./build-aux/ci_build.bash -b autotools -p build -d shared,sandbox
-      - name: Test with Valgrind
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: |
-            ./build-aux/ci_build.bash -b autotools -p test -d sandbox -w "valgrind --quiet --trace-children=yes --trace-children-skip=*/cmp,*/cp,*/diff,*/grep,*/rm,*/sed --exit-on-first-error=yes --error-exitcode=1"
-            cd ../xz_build && make distclean
-
-      - name: Build with musl libc
-        if: ${{ startsWith(matrix.os, 'ubuntu') }}
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -p build -m "/usr/bin/musl-gcc"
-      - name: Test with musl libc
-        if: ${{ startsWith(matrix.os, 'ubuntu') }}
-        run: |
-            ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -p test -m "/usr/bin/musl-gcc"
-      - name: Clean up musl libc run
-        if: ${{ startsWith(matrix.os, 'ubuntu') && matrix.build_system == 'autotools' }}
-        run: cd ../xz_build && make distclean
-
-      - name: Build with full features
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -p build
-      - name: Test with full features
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -p test -n full_features
-
-      - name: Build without encoders
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d encoders,shared -p build
-      - name: Test without encoders
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d encoders,shared -p test -n no_encoders
-
-      - name: Build without decoders
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d decoders,shared -p build
-      - name: Test without decoders
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d decoders,shared -p test -n no_decoders
-
-      - name: Build without threads
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d threads,shared -p build
-      - name: Test without threads
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d threads,shared -p test -n no_threads
-
-      - name: Build without BCJ filters
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d bcj,shared,nls -p build
-      - name: Test without BCJ filters
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d bcj,shared,nls -p test -n no_bcj
-
-      - name: Build without Delta filters
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d delta,shared,nls -p build
-      - name: Test without Delta filters
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d delta,shared,nls -p test -n no_delta
-
-      - name: Build without sha256 check
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -c crc32,crc64 -d shared,nls -p build
-      - name: Test without sha256 check
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -c crc32,crc64 -d shared,nls -p test -n no_sha256
-
-      - name: Build without crc64 check
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -c crc32,sha256 -d shared,nls -p build
-      - name: Test without crc64 check
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -c crc32,sha256 -d shared,nls -p test -n no_crc64
-
-      - name: Build small
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d small -p build
-      - name: Test small
-        run: ./build-aux/ci_build.bash -b ${{ matrix.build_system }} -d small -p test -n small
-
-      # Attempt to upload the test logs as artifacts if any step has failed
-      - uses: actions/upload-artifact@v4
-        if: ${{ failure() }}
-        with:
-          name: ${{ matrix.os }} ${{ matrix.build_system }} Test Logs
-          path: build-aux/artifacts

.github/workflows/cifuzz.yml

@@ -1,55 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-# Authors: Sam James
-#          Lasse Collin
-#
-# This was written based on the OSS-Fuzz docs:
-# https://google.github.io/oss-fuzz/getting-started/continuous-integration/
-
-name: CIFuzz
-
-on:
-  push:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  CIFuzz:
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-
-    strategy:
-      fail-fast: false
-      matrix:
-        sanitizer: [ address, undefined, memory ]
-
-    steps:
-    - name: Build Fuzzers (${{ matrix.sanitizer }})
-      id: build
-      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
-      with:
-        oss-fuzz-project-name: 'xz'
-        # The language must match the one in project.yaml in OSS-Fuzz:
-        # https://github.com/google/oss-fuzz/blob/master/projects/xz/project.yaml
-        # Thus, use C++ even though there are no C++ files in XZ Utils.
-        language: c++
-        sanitizer: ${{ matrix.sanitizer }}
-
-    - name: Run Fuzzers (${{ matrix.sanitizer }})
-      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
-      with:
-        oss-fuzz-project-name: 'xz'
-        language: c++
-        sanitizer: ${{ matrix.sanitizer }}
-        fuzz-seconds: 600
-        report-timeouts: true
-        report-ooms: true
-
-    - name: Upload Crash
-      uses: actions/upload-artifact@v4
-      if: failure() && steps.build.outcome == 'success'
-      with:
-        name: ${{ matrix.sanitizer }}-artifacts
-        path: ./out/artifacts

.github/workflows/coverity.yml

@@ -1,38 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: Coverity Scan
-
-# We only want to test a special branch, per
-# https://docs.travis-ci.com/user/coverity-scan/#build-submission-frequency
-on:
-  push:
-    branches: [coverity_scan]
-
-jobs:
-  coverity:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-
-    - name: Install dependencies
-      run: |
-        sudo apt-get update -q
-        sudo apt-get install -qy autoconf automake build-essential autopoint gcc-multilib
-
-    - name: Run autogen.sh
-      run: ./autogen.sh --no-po4a
-
-    - name: Run configure
-      run: ./configure --enable-debug --disable-silent-rules
-
-    # Coverity doesn't understand what the inline asm does,
-    # which results in false positives.
-    - name: Disable complex inline assembly code
-      run: echo '#define LZMA_RANGE_DECODER_CONFIG 0' >> config.h
-
-    - name: Coverity Scan
-      uses: vapier/coverity-scan-action@2068473c7bdf8c2fb984a6a40ae76ee7facd7a85 # v1.8.0
-      with:
-        command: make -Oline -j$(nproc)
-        email: ${{ secrets.COVERITY_SCAN_EMAIL }}
-        token: ${{ secrets.COVERITY_SCAN_TOKEN }}

.github/workflows/dragonflybsd.yml

@@ -1,40 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: DragonFly BSD
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  DragonflyBSD:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    name: DragonFly BSD
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Test in DragonFly BSD
-        id: test
-        uses: vmactions/dragonflybsd-vm@4ffb90652b45abc8156f89ede453c85f7ea257bb #v1.1.4
-        with:
-          usesh: true
-          prepare: >
-            pkg install -y
-            autoconf
-            automake
-            gettext-tools
-            libtool
-            m4
-          run: |
-            set -e
-            uname -a
-            ./autogen.sh --no-po4a
-            # Innocent putc() triggers strict-overflow warnings.
-            ./configure --disable-static --enable-debug --enable-werror CFLAGS='-g -O2 -pipe -Wno-error=strict-overflow'
-            make -j4 check

.github/workflows/freebsd.yml

@@ -1,58 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: FreeBSD
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  FreeBSD:
-    strategy:
-      matrix:
-        include:
-          - host: ubuntu-latest
-            version: 12.4
-            arch: x86_64
-          - host: ubuntu-latest
-            version: 15.0
-            arch: x86_64
-          # NOTE: Comment in the repo says that aarch64 VM is faster
-          # on x86_64 host compared to ubuntu-24.04-arm.
-          # - host: ubuntu-24.04-arm
-          #   version: 15.0
-          #   arch: aarch64
-
-    runs-on: ${{ matrix.host }}
-    timeout-minutes: 10
-
-    name: FreeBSD
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Test in FreeBSD
-        uses: vmactions/freebsd-vm@670398e4236735b8b65805c3da44b7a511fb8b27 #v1.3.0
-        with:
-          release: ${{ matrix.release }}
-          arch: ${{ matrix.arch }}
-          usesh: true
-          prepare: >
-            pkg install -y
-            autoconf
-            automake
-            gettext-tools
-            libtool
-            m4
-            po4a
-          run: |
-            set -e
-            uname -a
-            ./autogen.sh
-            ./configure --disable-static --enable-debug --enable-werror
-            make -j4 check

.github/workflows/msvc.yml

@@ -1,138 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-# Author: Lasse Collin
-
-name: Windows-MSVC
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  MSVC:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ windows-latest ]
-
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 10
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Configure Win32
-        run: >
-          cmake
-          -A Win32
-          -B build-msvc-win32
-
-      - name: Build Win32 Debug
-        run: >
-          cmake
-          --build build-msvc-win32
-          --config Debug
-
-      - name: Test Win32 Debug
-        run: >
-          ctest
-          --test-dir build-msvc-win32
-          --build-config Debug
-          --output-on-failure
-
-      - name: Build Win32 Release
-        run: >
-          cmake
-          --build build-msvc-win32
-          --config Release
-
-      # This fails with VS 2019 without b5a5d9e3f702.
-      - name: Test Win32 Release
-        run: >
-          ctest
-          --test-dir build-msvc-win32
-          --build-config Release
-          --output-on-failure
-
-      - name: Configure x64
-        run: >
-          cmake
-          -A x64
-          -B build-msvc-x64
-
-      - name: Build x64 Debug
-        run: >
-          cmake
-          --build build-msvc-x64
-          --config Debug
-
-      - name: Test x64 Debug
-        run: >
-          ctest
-          --test-dir build-msvc-x64
-          --build-config Debug
-          --output-on-failure
-
-      - name: Build x64 Release
-        run: >
-          cmake
-          --build build-msvc-x64
-          --config Release
-
-      - name: Test x64 Release
-        run: >
-          ctest
-          --test-dir build-msvc-x64
-          --build-config Release
-          --output-on-failure
-
-      - name: Configure ClangCL x64
-        run: >
-          cmake
-          -T ClangCL
-          -A x64
-          -B build-clangcl-x64
-          -DCMAKE_C_FLAGS="
-            -Wno-cast-align
-            -Wno-cast-qual
-            -Wno-covered-switch-default
-            -Wno-declaration-after-statement
-            -Wno-deprecated-declarations
-            -Wno-disabled-macro-expansion
-            -Wno-nonportable-system-include-path
-            -Wno-overlength-strings
-            -Wno-pre-c11-compat
-            -Wno-reserved-identifier
-            -Wno-unsafe-buffer-usage
-            -Wno-used-but-marked-unused"
-
-      - name: Build ClangCL x64 Debug
-        run: >
-          cmake
-          --build build-clangcl-x64
-          --config Debug
-
-      - name: Test ClangCL x64 Debug
-        run: >
-          ctest
-          --test-dir build-clangcl-x64
-          --build-config Debug
-          --output-on-failure
-
-      - name: Build ClangCL x64 Release
-        run: >
-          cmake
-          --build build-clangcl-x64
-          --config Release
-
-      - name: Test ClangCL x64 Release
-        run: >
-          ctest
-          --test-dir build-clangcl-x64
-          --build-config Release
-          --output-on-failure

.github/workflows/msys2.yml

@@ -1,148 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
-#
-# Authors: Jia Tan
-#          Lasse Collin
-#
-#############################################################################
-
-name: Windows-MSYS2
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  MSYS2:
-    strategy:
-      fail-fast: false
-      matrix:
-        runner: [ windows-latest ]
-        sys: [ mingw32, ucrt64, clang64, msys ]
-        include:
-          - runner: windows-11-arm
-            sys: clangarm64
-
-    # Set the shell to be msys2 as a default to avoid setting it for
-    # every individual run command.
-    defaults:
-      run:
-        shell: msys2 {0}
-
-    runs-on: ${{ matrix.runner }}
-    timeout-minutes: 20
-
-    steps:
-      - name: Setup MSYS2
-        if: ${{ matrix.sys == 'msys' }}
-        uses: msys2/setup-msys2@fb197b72ce45fb24f17bf3f807a388985654d1f2 # v2.29.0
-        with:
-          msystem: ${{ matrix.sys }}
-          update: true
-          install: >
-            make
-            ninja
-            autotools
-            cmake
-            base-devel
-            gettext-devel
-            gcc
-
-      - name: Setup MSYS2
-        if: ${{ matrix.sys != 'msys' }}
-        uses: msys2/setup-msys2@fb197b72ce45fb24f17bf3f807a388985654d1f2 # v2.29.0
-        with:
-          msystem: ${{ matrix.sys }}
-          update: true
-          pacboy: >
-            make:p
-            ninja:p
-            autotools:p
-            cmake:p
-            toolchain:p
-            gettext:p
-
-      - name: Git configuration
-        # Need to explicitly set the shell here since we set the default
-        # shell as msys2 earlier. This avoids an extra msys2 dependency on
-        # git.
-        shell: powershell
-        # Avoid Windows line endings. Otherwise test_scripts.sh will fail
-        # because the expected output is stored in the test framework as a
-        # text file and will not match the output from xzgrep.
-        run: git config --global core.autocrlf false
-
-      - uses: actions/checkout@v4
-
-      - name: CMake (full, shared)
-        run: |
-          set -e
-          cmake -G Ninja -B b-cmake-full \
-              -DBUILD_SHARED_LIBS=ON \
-              -DCMAKE_C_FLAGS='-UNDEBUG -g -O2 -pipe' \
-              -DCMAKE_COMPILE_WARNING_AS_ERROR=ON \
-              ${{ startsWith(matrix.sys, 'mingw') && '-DXZ_NLS=OFF' || '' }}
-          ninja -C b-cmake-full
-          ctest --test-dir b-cmake-full --output-on-failure
-
-      - name: CMake (small, static)
-        if: ${{ matrix.runner == 'windows-latest' }}
-        run: |
-          set -e
-          cmake -G Ninja -B b-cmake-small \
-              -DBUILD_SHARED_LIBS=OFF \
-              -DCMAKE_C_FLAGS='-UNDEBUG -g -Os -pipe' \
-              -DCMAKE_COMPILE_WARNING_AS_ERROR=ON \
-              -DXZ_SMALL=ON \
-              -DXZ_THREADS=no \
-              -DXZ_NLS=OFF
-          ninja -C b-cmake-small
-          ctest --test-dir b-cmake-small --output-on-failure
-
-      - name: autogen.sh
-        run: ./autogen.sh --no-po4a
-
-      - name: Autotools (full, shared)
-        run: |
-          set -e
-          mkdir b-autotools-full
-          cd b-autotools-full
-          ../configure \
-              --enable-debug \
-              --enable-werror \
-              --disable-static \
-              ${{ startsWith(matrix.sys, 'mingw') && '--disable-nls' || '' }}
-          make -j"$(nproc)" check
-
-      - name: Autotools (small, static)
-        if: ${{ matrix.runner == 'windows-latest' }}
-        run: |
-          set -e
-          mkdir b-autotools-small
-          cd b-autotools-small
-          ../configure \
-              --enable-debug \
-              --enable-werror \
-              --disable-shared \
-              --enable-small \
-              --disable-threads \
-              --disable-nls \
-              CFLAGS='-g -Os'
-          make -j"$(nproc)" check
-
-      # Upload the test logs as artifacts if any step has failed.
-      - uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-logs-${{ matrix.sys }}
-          path: |
-            b-cmake-*/Testing/Temporary/
-            b-cmake-*/test_*/
-            b-autotools-*/tests/*.log
-            b-autotools-*/tests/*output

.github/workflows/netbsd.yml

@@ -1,40 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: NetBSD
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  NetBSD:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    name: NetBSD
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Test in NetBSD
-        id: test
-        uses: vmactions/netbsd-vm@b24ed5f7a605362ab1226e73df291c8b01990c85 #v1.2.3
-        with:
-          usesh: true
-          prepare: >
-            /usr/sbin/pkg_add -v
-            cmake
-            gettext-tools
-            ninja-build
-            po4a
-          run: |
-            set -e
-            uname -a
-            ./po4a/update-po
-            # Innocent putc() triggers strict-overflow warnings.
-            cmake -G Ninja -B build -DBUILD_SHARED_LIBS=ON -DCMAKE_C_FLAGS='-UNDEBUG -g -O2 -pipe -Wno-error=strict-overflow' -DCMAKE_COMPILE_WARNING_AS_ERROR=ON
-            ninja -C build
-            ctest --test-dir build --output-on-failure

.github/workflows/openbsd.yml

@@ -1,40 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: OpenBSD
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  OpenBSD:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    name: OpenBSD
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Test in OpenBSD
-        uses: vmactions/openbsd-vm@2e29de1eb150dfe1c9c97b84ff2b7896f14ca690 #v1.2.5
-        with:
-          usesh: true
-          prepare: >
-            /usr/sbin/pkg_add -I -v
-            autoconf-2.72p0
-            automake-1.17
-            gettext-tools
-            libtool
-            m4
-          run: |
-            set -e
-            export AUTOCONF_VERSION=2.72
-            export AUTOMAKE_VERSION=1.17
-            uname -a
-            ./autogen.sh --no-po4a
-            ./configure --disable-static --enable-debug --enable-werror --disable-nls --enable-external-sha256
-            make -j4 check

.github/workflows/solaris.yml

@@ -1,34 +0,0 @@
-# SPDX-License-Identifier: 0BSD
-
-name: Solaris
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  Solaris:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    name: Solaris
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Test in Solaris
-        uses: vmactions/solaris-vm@47bea106d03acaf91084e52548ee460556011602 #v1.1.8
-        with:
-          release: 11.4-gcc
-          usesh: true
-          run: |
-            set -e
-            uname -a
-            # /usr/xpg4/bin isn't in PATH by default.
-            echo "Environment variable PATH: $PATH"
-            ./autogen.sh --no-po4a
-            ./configure --disable-static --enable-debug --enable-werror
-            make check

.gitignore

@@ -15,6 +15,7 @@ Makefile.in
 
 /ABOUT-NLS
 /autom4te.cache
+/Doxyfile
 /aclocal.m4
 /config.h
 /config.h.in
@@ -24,7 +25,6 @@ Makefile.in
 /libtool
 /stamp-h1
 
-build-aux/artifacts
 build-aux/compile
 build-aux/config.guess
 build-aux/config.rpath
@@ -40,10 +40,6 @@ coverage
 /doc/internal
 /doc/api
 
-/po4a/man
-/po4a/xz-man.pot
-/po4a/*.po.authors
-
 /src/liblzma/liblzma.pc
 /src/lzmainfo/lzmainfo
 /src/xz/xz
@@ -70,7 +66,6 @@ coverage
 /tests/test_index
 /tests/test_index_hash
 /tests/test_lzip_decoder
-/tests/test_microlzma
 /tests/test_memlimit
 /tests/test_stream_flags
 /tests/test_vli
@@ -97,17 +92,21 @@ coverage
 /DartConfiguration.tcl
 /liblzma-config-version.cmake
 /liblzma-config.cmake
+/lzcat
+/lzcat.1
+/lzma
+/lzma.1
 /Testing
 /tests_bin/
+/unlzma
+/unlzma.1
+/unxz
+/unxz.1
 /xz
+/xzcat
+/xzcat.1
 /xzdec
-/lzmadec
-/lzmainfo
-/xzdiff
-/xzgrep
-/xzless
-/xzmore
-/liblzma.pc
-/*.gmo
 
+/windows/*/.vs
+/windows/*/liblzma.vcxproj.user
 /.vscode/

AUTHORS

@@ -2,20 +2,22 @@
 Authors of XZ Utils
 ===================
 
-    XZ Utils is developed and maintained by
-    Lasse Collin <lasse.collin@tukaani.org>.
+    XZ Utils is developed and maintained by Lasse Collin
+    <lasse.collin@tukaani.org> and Jia Tan <jiat0218@gmail.com>.
 
     Major parts of liblzma are based on code written by Igor Pavlov,
     specifically the LZMA SDK <https://7-zip.org/sdk.html>. Without
     this code, XZ Utils wouldn't exist.
 
-    The SHA-256 implementation in liblzma is based on code written by
-    Wei Dai in Crypto++ Library <https://www.cryptopp.com/>.
+    The SHA-256 implementation in liblzma is based on the code found from
+    7-Zip <https://7-zip.org/>, which has a modified version of the SHA-256
+    code found from Crypto++ <https://www.cryptopp.com/>. The SHA-256 code
+    in Crypto++ was written by Kevin Springle and Wei Dai.
 
-    A few scripts have been adapted from GNU gzip. The original
-    versions were written by Jean-loup Gailly, Charles Levert, and
-    Paul Eggert. Andrew Dudman helped adapting the scripts and their
-    man pages for XZ Utils.
+    Some scripts have been adapted from gzip. The original versions
+    were written by Jean-loup Gailly, Charles Levert, and Paul Eggert.
+    Andrew Dudman helped adapting the scripts and their man pages for
+    XZ Utils.
 
     The initial version of the threaded .xz decompressor was written
     by Sebastian Andrzej Siewior.
@@ -23,36 +25,15 @@ Authors of XZ Utils
     The initial version of the .lz (lzip) decoder was written
     by Michał Górny.
 
-    Architecture-specific CRC optimizations were contributed by
-    Ilya Kurdyukov, Chenxi Mao, and Xi Ruoyao.
+    CLMUL-accelerated CRC code was contributed by Ilya Kurdyukov.
 
     Other authors:
       - Jonathan Nieder
       - Joachim Henke
 
-    Special author: Jia Tan was a co-maintainer in 2022-2024. He and
-    the team behind him inserted a backdoor (CVE-2024-3094) into
-    XZ Utils 5.6.0 and 5.6.1 releases. He suddenly disappeared when
-    this was discovered.
+    The GNU Autotools-based build system contains files from many authors,
+    which I'm not trying to list here.
 
-    Many people have contributed improvements or reported bugs.
-    Most of these people are mentioned in the file THANKS.
-
-    The translations of the command line tools and man pages have been
-    contributed by many people via the Translation Project:
-
-      - https://translationproject.org/domain/xz.html
-      - https://translationproject.org/domain/xz-man.html
-
-    The authors of the translated man pages are in the header comments
-    of the man page files. In the source package, the authors of the
-    translations are in po/*.po and po4a/*.po files.
-
-    Third-party code whose authors aren't listed here:
-
-      - GNU getopt_long() in the 'lib' directory is included for
-        platforms that don't have a usable getopt_long().
-
-      - The build system files from GNU Autoconf, GNU Automake,
-        GNU Libtool, GNU Gettext, Autoconf Archive, and related files.
+    Several people have contributed fixes or reported bugs. Most of them
+    are mentioned in the file THANKS.
 

COPYING

@@ -3,68 +3,74 @@ XZ Utils Licensing
 ==================
 
     Different licenses apply to different files in this package. Here
-    is a summary of which licenses apply to which parts of this package:
+    is a rough summary of which licenses apply to which parts of this
+    package (but check the individual files to be sure!):
 
-      - liblzma is under the BSD Zero Clause License (0BSD).
+      - liblzma is in the public domain.
 
-      - The command line tools xz, xzdec, lzmadec, and lzmainfo are
-        under 0BSD except that, on systems that don't have a usable
-        getopt_long, GNU getopt_long is compiled and linked in from the
-        'lib' directory. The getopt_long code is under GNU LGPLv2.1+.
+      - xz, xzdec, and lzmadec command line tools are in the public
+        domain unless GNU getopt_long had to be compiled and linked
+        in from the lib directory. The getopt_long code is under
+        GNU LGPLv2.1+.
 
       - The scripts to grep, diff, and view compressed files have been
-        adapted from GNU gzip. These scripts (xzgrep, xzdiff, xzless,
-        and xzmore) are under GNU GPLv2+. The man pages of the scripts
-        are under 0BSD; they aren't based on the man pages of GNU gzip.
+        adapted from gzip. These scripts and their documentation are
+        under GNU GPLv2+.
 
-      - Most of the XZ Utils specific documentation that is in
-        plain text files (like README, INSTALL, PACKAGERS, NEWS,
-        and ChangeLog) are under 0BSD unless stated otherwise in
-        the file itself. The files xz-file-format.txt and
-        lzma-file-format.xt are in the public domain but may
-        be distributed under the terms of 0BSD too.
+      - All the documentation in the doc directory and most of the
+        XZ Utils specific documentation files in other directories
+        are in the public domain.
 
-      - Translated messages and man pages are under 0BSD except that
-        some old translations are in the public domain.
+        Note: The JavaScript files (under the MIT license) have
+        been removed from the Doxygen-generated HTML version of the
+        liblzma API documentation. Doxygen itself is under the GNU GPL
+        but the remaining files generated by Doxygen are not affected
+        by the licenses used in Doxygen because Doxygen licensing has
+        the following exception:
 
-      - Test files and test code in the 'tests' directory, and
-        debugging utilities in the 'debug' directory are under
-        the BSD Zero Clause License (0BSD).
+            "Documents produced by doxygen are derivative works
+            derived from the input used in their production;
+            they are not affected by this license."
 
-      - The GNU Autotools based build system contains files that are
-        under GNU GPLv2+, GNU GPLv3+, and a few permissive licenses.
-        These files don't affect the licensing of the binaries being
-        built.
+      - Translated messages are in the public domain.
 
-      - The 'extra' directory contains files that are under various
-        free software licenses. These aren't built or installed as
-        part of XZ Utils.
+      - The build system contains public domain files, and files that
+        are under GNU GPLv2+ or GNU GPLv3+. None of these files end up
+        in the binaries being built.
 
-    The following command may be helpful in finding per-file license
-    information. It works on xz.git and on a clean file tree extracted
-    from a release tarball.
+      - Test files and test code in the tests directory, and debugging
+        utilities in the debug directory are in the public domain.
 
-        sh build-aux/license-check.sh -v
+      - The extra directory may contain public domain files, and files
+        that are under various free software licenses.
 
-    For the files under the BSD Zero Clause License (0BSD), if
-    a copyright notice is needed, the following is sufficient:
+    You can do whatever you want with the files that have been put into
+    the public domain. If you find public domain legally problematic,
+    take the previous sentence as a license grant. If you still find
+    the lack of copyright legally problematic, you have too many
+    lawyers.
 
-        Copyright (C) The XZ Utils authors and contributors
+    As usual, this software is provided "as is", without any warranty.
 
-    If you copy significant amounts of 0BSD-licensed code from XZ Utils
+    If you copy significant amounts of public domain code from XZ Utils
     into your project, acknowledging this somewhere in your software is
     polite (especially if it is proprietary, non-free software), but
-    it is not legally required by the license terms. Here is an example
-    of a good notice to put into "about box" or into documentation:
+    naturally it is not legally required. Here is an example of a good
+    notice to put into "about box" or into documentation:
 
         This software includes code from XZ Utils <https://tukaani.org/xz/>.
 
     The following license texts are included in the following files:
-      - COPYING.0BSD: BSD Zero Clause License
       - COPYING.LGPLv2.1: GNU Lesser General Public License version 2.1
       - COPYING.GPLv2: GNU General Public License version 2
       - COPYING.GPLv3: GNU General Public License version 3
 
-    If you have questions, don't hesitate to ask for more information.
-    The contact information is in the README file.
+    Note that the toolchain (compiler, linker etc.) may add some code
+    pieces that are copyrighted. Thus, it is possible that e.g. liblzma
+    binary wouldn't actually be in the public domain in its entirety
+    even though it contains no copyrighted code from the XZ Utils source
+    package.
+
+    If you have questions, don't hesitate to ask the author(s) for more
+    information.
 

COPYING.0BSD

@@ -1,11 +0,0 @@
-Permission to use, copy, modify, and/or distribute this
-software for any purpose with or without fee is hereby granted.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
-WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
-THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
-NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

COPYING.GPLv2

@@ -2,7 +2,7 @@
                        Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- <https://fsf.org/>
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -304,7 +304,8 @@ the "copyright" line and a pointer to where the full notice is found.
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License along
-    with this program; if not, see <https://www.gnu.org/licenses/>.
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -328,8 +329,8 @@ necessary.  Here is a sample; alter the names:
   Yoyodyne, Inc., hereby disclaims all copyright interest in the program
   `Gnomovision' (which makes passes at compilers) written by James Hacker.
 
-  <signature of Moe Ghoul>, 1 April 1989
-  Moe Ghoul, President of Vice
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
 
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may

COPYING.LGPLv2.1

@@ -2,7 +2,7 @@
                        Version 2.1, February 1999
 
  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
- <https://fsf.org/>
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -484,7 +484,8 @@ convey the exclusion of warranty; and each file should have at least the
     Lesser General Public License for more details.
 
     You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, see <https://www.gnu.org/licenses/>.
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -495,7 +496,7 @@ necessary.  Here is a sample; alter the names:
   Yoyodyne, Inc., hereby disclaims all copyright interest in the
   library `Frob' (a library for tweaking knobs) written by James Random Hacker.
 
-  <signature of Moe Ghoul>, 1 April 1990
-  Moe Ghoul, President of Vice
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
 
 That's all there is to it!

ChangeLog

@@ -1,6 +1,6 @@
 See the commit log in the git repository:
 
-    git clone https://github.com/tukaani-project/xz
+    git clone https://git.tukaani.org/xz.git
 
 Note that "make dist" doesn't put this tiny file into the package.
 Instead, the git commit log is used as ChangeLog. See dist-hook in

INSTALL

@@ -16,7 +16,7 @@ XZ Utils Installation
             1.2.8. DOS
             1.2.9. z/OS
        1.3. Adding support for new platforms
-    2. configure and CMake options
+    2. configure options
        2.1. Static vs. dynamic linking of liblzma
        2.2. Optimizing xzdec and lzmadec
     3. xzgrep and other scripts
@@ -76,11 +76,6 @@ XZ Utils Installation
     you use CC=xlc instead, you must disable threading support
     with --disable-threads (usually not recommended).
 
-    If building a 32-bit executable, the address space available to xz
-    might be limited to 256 MiB by default. To increase the address
-    space to 2 GiB, pass LDFLAGS=-Wl,-bmaxdata:0x80000000 as an argument
-    to configure.
-
 
 1.2.2. IRIX
 
@@ -95,15 +90,21 @@ XZ Utils Installation
 
 1.2.3. MINIX 3
 
-    Version 3.3.0 and later are supported.
+    The default install of MINIX 3 includes Amsterdam Compiler Kit (ACK),
+    which doesn't support C99. Install GCC to compile XZ Utils.
 
-    Multithreading isn't supported because MINIX 3 doesn't have
-    pthreads. The option --disable-threads must be passed to configure
-    as this isn't autodetected.
+    MINIX 3.1.8 and older have bugs in /usr/include/stdint.h, which has
+    to be patched before XZ Utils can be compiled correctly. See
+    <http://gforge.cs.vu.nl/gf/project/minix/tracker/?action=TrackerItemEdit&tracker_item_id=537>.
 
-    Note that disabling threads causes "make check" to show a few tests
-    as skipped ("SKIP"). It's only due to a few threading-dependent
-    subtests are skipped. See the matching tests/test_*.log files.
+    MINIX 3.2.0 and later use a different libc and aren't affected by
+    the above bug.
+
+    XZ Utils doesn't have code to detect the amount of physical RAM and
+    number of CPU cores on MINIX 3.
+
+    See section 5.4 in this file about symbol visibility warnings (you
+    may want to pass gl_cv_cc_visibility=no to configure).
 
 
 1.2.4. OpenVMS
@@ -142,37 +143,43 @@ XZ Utils Installation
 
 1.2.7. Windows
 
-    The "windows" directory contains instructions for a few types
-    of builds:
+    If it is enough to build liblzma (no command line tools):
 
-      - INSTALL-MinGW-w64_with_CMake.txt
-                Simple instructions how to build XZ Utils natively on
-                Windows using only CMake and a prebuilt toolchain
-                (GCC + MinGW-w64 or Clang/LLVM + MinGW-w64).
+      - There is CMake support. It should be good enough to build
+        static liblzma or liblzma.dll with Visual Studio. The CMake
+        support may work with MinGW or MinGW-w64. Read the comment
+        in the beginning of CMakeLists.txt before running CMake!
 
-      - INSTALL-MinGW-w64_with_Autotools.txt
-                Native build under MSYS2 or cross-compilation from
-                GNU/Linux using a bash script that creates a .zip
-                and .7z archives of the binaries and documentation.
-                The related file README-Windows.txt is for the
-                resulting binary package.
+      - There are Visual Studio project files under the "windows"
+        directory. See windows/INSTALL-MSVC.txt. In the future the
+        project files will be removed when CMake support is good
+        enough. Thus, please test the CMake version and help fix
+        possible issues.
 
-      - INSTALL-MSVC.txt
-                Building with MSVC / Visual Studio and CMake.
+    To build also the command line tools:
 
-      - liblzma-crt-mixing.txt
-                Documentation what to take into account as a programmer
-                if liblzma.dll and the application don't use the same
-                CRT (MSVCRT or UCRT).
+      - MinGW-w64 + MSYS (32-bit and 64-bit x86): This is used
+        for building the official binary packages for Windows.
+        There is windows/build.bash to ease packaging XZ Utils with
+        MinGW(-w64) + MSYS into a redistributable .zip or .7z file.
+        See windows/INSTALL-MinGW.txt for more information.
 
-    Other choices:
+      - MinGW + MSYS (32-bit x86): I haven't recently tested this.
 
-      - Cygwin: https://cygwin.com/
-        Building on Cygwin can be done like on many POSIX operating
-        systems. XZ Utils >= 5.2.0 isn't compatible with Cygwin older
-        than 1.7.35 (data loss!). 1.7.35 was released on 2015-03-04.
+      - Cygwin 1.7.35 and later: NOTE that using XZ Utils >= 5.2.0
+        under Cygwin older than 1.7.35 can lead to DATA LOSS! If
+        you must use an old Cygwin version, stick to XZ Utils 5.0.x
+        which is safe under older Cygwin versions. You can check
+        the Cygwin version with the command "cygcheck -V".
 
-      - MSYS2: https://www.msys2.org/
+    It may be possible to build liblzma with other toolchains too, but
+    that will probably require writing a separate makefile. Building
+    the command line tools with non-GNU toolchains will be harder than
+    building only liblzma.
+
+    Even if liblzma is built with MinGW(-w64), the resulting DLL can
+    be used by other compilers and linkers, including MSVC. See
+    windows/README-Windows.txt for details.
 
 
 1.2.8. DOS
@@ -218,53 +225,19 @@ XZ Utils Installation
     in C89 or C++.
 
 
-2. configure and CMake options
-------------------------------
+2. configure options
+--------------------
 
     In most cases, the defaults are what you want. Many of the options
     below are useful only when building a size-optimized version of
     liblzma or command line tools.
 
-    configure options are those that begin with two dashes "--"
-    or "gl_".
-
-    CMake options begin with "XZ_", "TUKLIB_", or "CMAKE_". To use
-    them on the command line, prefix them with "-D", for example,
-    "cmake -DCMAKE_COMPILE_WARNING_AS_ERROR=ON".
-
-    CMAKE_BUILD_TYPE=TYPE
-                CMake only:
-
-                For release builds, CMAKE_BUILD_TYPE=Release is fine.
-                On targets where CMake defaults to -O3, the default
-                value is overridden to -O2.
-
-                Empty value (CMAKE_BUILD_TYPE=) is fine if using custom
-                optimization options. *In this package* the empty build
-                type also disables debugging code just like "Release"
-                does. To enable debugging code with empty build type,
-                use -UNDEBUG in the CFLAGS environment variable or in
-                the CMAKE_C_FLAGS CMake variable to override -DNDEBUG.
-
-                Non-standard build types like "None" do NOT disable
-                debugging code! Such non-standard build types should
-                be avoided for production builds!
-
     --enable-encoders=LIST
     --disable-encoders
-    XZ_ENCODERS=LIST
-                Specify a LIST of filter encoders to build. In the
-                configure option the list is comma separated.
-                CMake lists are semicolon separated.
-
-                To see the exact list of available filter encoders:
-
-                  - Autotools: ./configure --help
-
-                  - CMake: Configure the tree normally first, then use
-                    "cmake -LH ." to list the cache variables.
-
-                The default is to build all supported encoders.
+                Specify a comma-separated LIST of filter encoders to
+                build. See "./configure --help" for exact list of
+                available filter encoders. The default is to build all
+                supported encoders.
 
                 If LIST is empty or --disable-encoders is used, no filter
                 encoders will be built and also the code shared between
@@ -276,12 +249,10 @@ XZ Utils Installation
 
     --enable-decoders=LIST
     --disable-decoders
-    XZ_DECODERS=LIST
                 This is like --enable-encoders but for decoders. The
                 default is to build all supported decoders.
 
     --enable-match-finders=LIST
-    XZ_MATCH_FINDERS=LIST
                 liblzma includes two categories of match finders:
                 hash chains and binary trees. Hash chains (hc3 and hc4)
                 are quite fast but they don't provide the best compression
@@ -298,11 +269,9 @@ XZ Utils Installation
                 or LZMA2 filter encoders are being built.
 
     --enable-checks=LIST
-    XZ_CHECKS=LIST
                 liblzma support multiple integrity checks. CRC32 is
-                mandatory, and cannot be omitted. Supported check
-                types are "crc32", "crc64", and "sha256". By default
-                all supported check types are enabled.
+                mandatory, and cannot be omitted. See "./configure --help"
+                for exact list of available integrity check types.
 
                 liblzma and the command line tools can decompress files
                 which use unsupported integrity check type, but naturally
@@ -313,7 +282,6 @@ XZ Utils Installation
                 it is known to not cause problems.
 
     --enable-external-sha256
-    XZ_EXTERNAL_SHA256=ON
                 Try to use SHA-256 code from the operating system libc
                 or similar base system libraries. This doesn't try to
                 use OpenSSL or libgcrypt or such libraries.
@@ -350,8 +318,6 @@ XZ Utils Installation
                         time xz --test foo.xz
 
     --disable-microlzma
-    XZ_MICROLZMA_ENCODER=OFF
-    XZ_MICROLZMA_DECODER=OFF
                 Don't build MicroLZMA encoder and decoder. This omits
                 lzma_microlzma_encoder() and lzma_microlzma_decoder()
                 API functions from liblzma. These functions are needed
@@ -359,7 +325,6 @@ XZ Utils Installation
                 erofs-utils but they may be used by others too.
 
     --disable-lzip-decoder
-    XZ_LZIP_DECODER=OFF
                 Disable decompression support for .lz (lzip) files.
                 This omits the API function lzma_lzip_decoder() from
                 liblzma and .lz support from the xz tool.
@@ -368,10 +333,6 @@ XZ Utils Installation
     --disable-xzdec
     --disable-lzmadec
     --disable-lzmainfo
-    XZ_TOOL_XZ=OFF
-    XZ_TOOL_XZDEC=OFF
-    XZ_TOOL_LZMADEC=OFF
-    XZ_TOOL_LZMAINFO=OFF
                 Don't build and install the command line tool mentioned
                 in the option name.
 
@@ -381,63 +342,37 @@ XZ Utils Installation
                 a dangling man page symlink lzmadec.1 -> xzdec.1 is
                 created.
 
-    XZ_TOOL_SYMLINKS=OFF
-                Don't create the unxz and xzcat symlinks. (There is
-                no "configure" option to disable these symlinks.)
-
     --disable-lzma-links
-    XZ_TOOL_SYMLINKS_LZMA=OFF
                 Don't create symlinks for LZMA Utils compatibility.
                 This includes lzma, unlzma, and lzcat. If scripts are
                 installed, also lzdiff, lzcmp, lzgrep, lzegrep, lzfgrep,
                 lzmore, and lzless will be omitted if this option is used.
 
     --disable-scripts
-    XZ_TOOL_SCRIPTS=OFF
                 Don't install the scripts xzdiff, xzgrep, xzmore, xzless,
                 and their symlinks.
 
     --disable-doc
-    XZ_DOC=OFF
                 Don't install the documentation files to $docdir
                 (often /usr/doc/xz or /usr/local/doc/xz). Man pages
                 will still be installed. The $docdir can be changed
                 with --docdir=DIR.
 
-    --enable-doxygen
-    XZ_DOXYGEN=ON
-                Enable generation of the HTML version of the liblzma API
-                documentation using Doxygen. The resulting files are
-                installed to $docdir/api. This option assumes that
-                the 'doxygen' tool is available.
-
-                NOTE: --disable-doc or XZ_DOC=OFF don't affect this.
-
     --disable-assembler
-    XZ_ASM_I386=OFF
-                This disables CRC32 and CRC64 assembly code on
-                32-bit x86. This option currently does nothing
-                on other architectures (not even on x86-64).
+                liblzma includes some assembler optimizations. Currently
+                there is only assembler code for CRC32 and CRC64 for
+                32-bit x86.
 
-                The 32-bit x86 assembly is position-independent code
-                which is suitable for use in shared libraries and
-                position-independent executables. It uses only i386
-                instructions but the code is optimized for i686 class
-                CPUs. If you are compiling liblzma exclusively for
+                All the assembler code in liblzma is position-independent
+                code, which is suitable for use in shared libraries and
+                position-independent executables. So far only i386
+                instructions are used, but the code is optimized for i686
+                class CPUs. If you are compiling liblzma exclusively for
                 pre-i686 systems, you may want to disable the assembler
                 code.
 
-                The assembly code is compatible with only certain OSes
-                and toolchains (it's not compatible with MSVC).
-
-                Since XZ Utils 5.7.1alpha, the 32-bit x86 assembly code
-                co-exists with the modern CLMUL code: CLMUL is used if
-                support for it is detected at runtime. On old processors
-                the assembly code is used.
-
     --disable-clmul-crc
-    XZ_CLMUL_CRC=OFF
-                Disable the use of carryless multiplication for CRC
+                Disable the use carryless multiplication for CRC
                 calculation even if compiler support for it is detected.
                 The code uses runtime detection of SSSE3, SSE4.1, and
                 CLMUL instructions on x86. On 32-bit x86 this currently
@@ -448,27 +383,7 @@ XZ Utils Installation
                 required extensions (-msse4.1 -mpclmul) then runtime
                 detection isn't used and the generic code is omitted.
 
-    --disable-arm64-crc32
-    XZ_ARM64_CRC32=OFF
-                Disable the use of the ARM64 CRC32 instruction extension
-                even if compiler support for it is detected. The code will
-                detect support for the instruction at runtime.
-
-                If using compiler options that unconditionally allow the
-                required extensions (-march=armv8-a+crc or -march=armv8.1-a
-                and later) then runtime detection isn't used and the
-                generic code is omitted.
-
-    --disable-loongarch-crc32
-    XZ_LOONGARCH_CRC32=OFF
-                Disable the use of the 64-bit LoongArch CRC32
-                instruction extension even if compiler support for
-                it is detected. There is no runtime detection because
-                all 64-bit LoongArch processors should support
-                the CRC32 instructions.
-
     --enable-unaligned-access
-    TUKLIB_FAST_UNALIGNED_ACCESS=ON
                 Allow liblzma to use unaligned memory access for 16-bit,
                 32-bit, and 64-bit loads and stores. This should be
                 enabled only when the hardware supports this, that is,
@@ -477,46 +392,10 @@ XZ Utils Installation
                 slow. This option shouldn't be used on systems that
                 rely on such emulation.
 
-                Unaligned access is enabled by default on these:
-                  - 32-bit x86
-                  - 64-bit x86-64
-                  - 32-bit big endian PowerPC
-                  - 64-bit big endian PowerPC
-                  - 64-bit little endian PowerPC
-                  - some RISC-V [1]
-                  - some 32-bit ARM [2]
-                  - some 64-bit ARM64 [2] (NOTE: Autodetection bug
-                    if using GCC -mstrict-align, see below.)
-
-                [1] Unaligned access is enabled by default if
-                    configure sees that the C compiler
-                    #defines __riscv_misaligned_fast.
-
-                [2] Unaligned access is enabled by default if
-                    configure sees that the C compiler
-                    #defines __ARM_FEATURE_UNALIGNED:
-
-                      - ARMv7 + GCC or Clang: It works. The options
-                        -munaligned-access and -mno-unaligned-access
-                        affect this macro correctly.
-
-                      - ARM64 + Clang: It works. The options
-                        -munaligned-access, -mno-unaligned-access,
-                        and -mstrict-align affect this macro correctly.
-                        Clang >= 17 supports -mno-strict-align too.
-
-                      - ARM64 + GCC: It partially works. The macro
-                        is always #defined by GCC versions at least
-                        up to 13.2, even when using -mstrict-align.
-                        If building for strict-align ARM64, the
-                        configure option --disable-unaligned-access
-                        should be used if using a GCC version that has
-                        this issue because otherwise the performance
-                        may be degraded. It likely won't crash due to
-                        how unaligned access is done in the C code.
+                Unaligned access is enabled by default on x86, x86-64,
+                big endian PowerPC, some ARM, and some ARM64 systems.
 
     --enable-unsafe-type-punning
-    TUKLIB_USE_UNSAFE_TYPE_PUNNING=ON
                 This enables use of code like
 
                     uint8_t *buf8 = ...;
@@ -533,7 +412,6 @@ XZ Utils Installation
                 GCC 3 and early 4.x on x86, GCC < 6 on ARMv6 and ARMv7).
 
     --enable-small
-    XZ_SMALL=ON
                 Reduce the size of liblzma by selecting smaller but
                 semantically equivalent version of some functions, and
                 omit precomputed lookup tables. This option tends to
@@ -550,7 +428,6 @@ XZ Utils Installation
                 flag(s) to CFLAGS manually.
 
     --enable-assume-ram=SIZE
-    XZ_ASSUME_RAM=SIZE
                 On the most common operating systems, XZ Utils is able to
                 detect the amount of physical memory on the system. This
                 information is used by the options --memlimit-compress,
@@ -567,7 +444,6 @@ XZ Utils Installation
                 src/common/tuklib_physmem.c for details.
 
     --enable-threads=METHOD
-    XZ_THREADS=METHOD
                 Threading support is enabled by default so normally there
                 is no need to specify this option.
 
@@ -584,14 +460,14 @@ XZ Utils Installation
                                 too. This is the default for 32-bit x86
                                 Windows builds. Unless the compiler
                                 supports __attribute__((__constructor__)),
-                                the 'win95' threading is incompatible with
+                                the `win95' threading is incompatible with
                                 --enable-small.
 
                         vista   Use Windows Vista compatible threads. The
                                 resulting binaries won't run on Windows XP
                                 or older. This is the default for Windows
                                 excluding 32-bit x86 builds (that is, on
-                                x86-64 the default is 'vista').
+                                x86-64 the default is `vista').
 
                         no      Disable threading support. This is the
                                 same as using --disable-threads.
@@ -604,17 +480,13 @@ XZ Utils Installation
                                 one thread, something bad may happen.
 
     --enable-sandbox=METHOD
-    XZ_SANDBOX=METHOD
-                There is limited sandboxing support in the xz and xzdec
-                tools. If built with sandbox support, xz uses it
-                automatically when (de)compressing exactly one file to
-                standard output when the options --files or --files0 aren't
-                used. This is a common use case, for example,
-                (de)compressing .tar.xz files via GNU tar. The sandbox is
-                also used for single-file 'xz --test' or 'xz --list'.
-                xzdec always uses the sandbox, except when more than one
-                file are decompressed. In this case it will enable the
-                sandbox for the last file that is decompressed.
+                There is limited sandboxing support in the xz tool. If
+                built with sandbox support, it's used automatically when
+                (de)compressing exactly one file to standard output and
+                the options --files or --files0 weren't used. This is a
+                common use case, for example, (de)compressing .tar.xz
+                files via GNU tar. The sandbox is also used for
+                single-file `xz --test' or `xz --list'.
 
                 Supported METHODs:
 
@@ -626,7 +498,7 @@ XZ Utils Installation
                         no      Disable sandboxing support.
 
                         capsicum
-                                Use Capsicum (FreeBSD >= 10.2) for
+                                Use Capsicum (FreeBSD >= 10) for
                                 sandboxing. If no Capsicum support
                                 is found, configure will give an error.
 
@@ -634,76 +506,23 @@ XZ Utils Installation
                                 sandboxing. If pledge(2) isn't found,
                                 configure will give an error.
 
-                        landlock
-                                Use Landlock (Linux >= 5.13) for
-                                sandboxing. If no Landlock support
-                                is found, configure will give an error.
-
-    --enable-symbol-versions[=VARIANT]
-    XZ_SYMBOL_VERSIONING=VARIANT
-                Use symbol versioning for liblzma shared library.
-                This is enabled by default on GNU/Linux (glibc only),
-                other GNU-based systems, and FreeBSD.
-
-                Symbol versioning is never used for static liblzma. This
-                option is ignored when not building a shared library.
-
-                Supported VARIANTs:
-
-                        no      Disable symbol versioning. This is the
-                                same as using --disable-symbol-versions.
-
-                        auto    Autodetect between "no", "linux",
-                                and "generic".
-
-                        yes     Autodetect between "linux" and
-                                "generic". This forces symbol
-                                versioning to be used when
-                                building a shared library.
-
-                        generic Generic version is the default for
-                                FreeBSD and GNU/Linux on MicroBlaze.
-
-                                This is also used on GNU/Linux when
-                                building with NVIDIA HPC Compiler
-                                because the compiler doesn't support
-                                the features required for the "linux"
-                                variant below.
-
-                        linux   Special version for GNU/Linux (glibc
-                                only). This adds a few extra symbol
-                                versions for compatibility with binaries
-                                that have been linked against a liblzma
-                                version that has been patched with
-                                "xz-5.2.2-compat-libs.patch" from
-                                RHEL/CentOS 7. That patch was used
-                                by some build tools outside of
-                                RHEL/CentOS 7 too.
+    --enable-symbol-versions
+                Use symbol versioning for liblzma. This is enabled by
+                default on GNU/Linux, other GNU-based systems, and
+                FreeBSD.
 
     --enable-debug
                 This enables the assert() macro and possibly some other
                 run-time consistency checks. It makes the code slower, so
                 you normally don't want to have this enabled.
 
-                In CMake, the build type (CMAKE_BUILD_TYPE) controls if
-                -DNDEBUG is passed to the compiler. *In this package*,
-                an empty build type disables debugging code too.
-                Non-standard build types like "None" do NOT disable
-                debugging code!
-
-                To enable debugging code with empty build type in CMake,
-                use -UNDEBUG in the CFLAGS environment variable or in
-                the CMAKE_C_FLAGS CMake variable to override -DNDEBUG.
-
     --enable-werror
-    CMAKE_COMPILE_WARNING_AS_ERROR=ON (CMake >= 3.24)
                 If building with GCC, make all compiler warnings an error,
                 that abort the compilation. This may help catching bugs,
                 and should work on most systems. This has no effect on the
                 resulting binaries.
 
     --enable-path-for-scripts=PREFIX
-    (CMake determines this from the path of XZ_POSIX_SHELL)
                 If PREFIX isn't empty, PATH=PREFIX:$PATH will be set in
                 the beginning of the scripts (xzgrep and others).
                 The default is empty except on Solaris the default is
@@ -720,36 +539,6 @@ XZ Utils Installation
                 the PATH for the scripts. It is described in section 3.2
                 and is supported in this xz version too.
 
-    gl_cv_posix_shell=/path/to/bin/sh
-    XZ_POSIX_SHELL=/path/to/bin/sh
-                POSIX shell to use for xzgrep and other scripts.
-
-                  - configure should autodetect this well enough.
-                    Typically it's /bin/sh but in some cases, like
-                    Solaris, something else is used.
-
-                  - CMake build uses /bin/sh except on Solaris the
-                    default is /usr/xpg4/bin/sh.
-
-    CMAKE_DLL_NAME_WITH_SOVERSION=ON
-                CMake on native Windows (not Cygwin) only:
-
-                This changes the filename liblzma.dll to liblzma-5.dll.
-
-                The unversioned filename liblzma.dll has been used
-                since XZ Utils 5.0.0 when creating binary packages
-                using the included windows/build.bash. The same
-                unversioned filename is the default with CMake.
-                However, there are popular builds that, very
-                understandably and reasonably, use the versioned
-                filename produced by GNU Libtool.
-
-                This option should usually be left to its default value
-                (OFF). It can be set to ON if the liblzma DLL filename
-                must be compatible with the versioned filename
-                produced by GNU Libtool. For example, binaries
-                distributed in MSYS2 use a versioned DLL filename.
-
 
 2.1. Static vs. dynamic linking of liblzma
 
@@ -918,7 +707,7 @@ XZ Utils Installation
 
     The configure script determines if assembler code can be used by
     looking at the configure triplet; there is currently no check if
-    the assembler code can actually be built. The x86 assembler
+    the assembler code can actually actually be built. The x86 assembler
     code should work on x86 GNU/Linux, *BSDs, Solaris, Darwin, MinGW,
     Cygwin, and DJGPP. On other x86 systems, there may be problems and
     the assembler code may need to be disabled with the configure option.

Makefile.am

@@ -1,5 +1,9 @@
-## SPDX-License-Identifier: 0BSD
+##
 ## Author: Lasse Collin
+##
+## This file has been put into the public domain.
+## You can do whatever you want with this file.
+##
 
 # Use -n to prevent gzip from adding a timestamp to the .gz headers.
 GZIP_ENV = -9n
@@ -17,11 +21,11 @@ if COND_DOC
 dist_doc_DATA = \
 	AUTHORS \
 	COPYING \
-	COPYING.0BSD \
 	COPYING.GPLv2 \
 	NEWS \
 	README \
 	THANKS \
+	TODO \
 	doc/faq.txt \
 	doc/history.txt \
 	doc/xz-file-format.txt \
@@ -34,34 +38,47 @@ dist_examples_DATA = \
 	doc/examples/02_decompress.c \
 	doc/examples/03_compress_custom.c \
 	doc/examples/04_compress_easy_mt.c \
-	doc/examples/11_file_info.c \
 	doc/examples/Makefile
+
+examplesolddir = $(docdir)/examples_old
+dist_examplesold_DATA = \
+	doc/examples_old/xz_pipe_comp.c \
+	doc/examples_old/xz_pipe_decomp.c
+
+# Install the Doxygen generated documentation if they were built.
+install-data-local:
+	if test -d "$(srcdir)/doc/api" ; then \
+		$(MKDIR_P) "$(DESTDIR)$(docdir)/api" && \
+		$(INSTALL_DATA) "$(srcdir)"/doc/api/* \
+			"$(DESTDIR)$(docdir)/api"; \
+	fi
+
+# Remove the Doxygen generated documentation when uninstalling.
+uninstall-local:
+	rm -rf "$(DESTDIR)$(docdir)/api"
 endif
 
 EXTRA_DIST = \
-	cmake \
+	po4a \
+	extra \
 	dos \
 	doxygen \
-	extra \
-	po4a \
 	windows \
+	macosx \
+	cmake \
 	CMakeLists.txt \
+	autogen.sh \
 	COPYING.GPLv2 \
 	COPYING.GPLv3 \
 	COPYING.LGPLv2.1 \
 	INSTALL.generic \
 	PACKAGERS \
-	TODO \
-	autogen.sh \
-	build-aux/license-check.sh \
 	build-aux/manconv.sh \
-	build-aux/version.sh \
-	po/xz.pot-header
+	build-aux/version.sh
 
 ACLOCAL_AMFLAGS = -I m4
 
-# List of man pages to convert to plain text in the dist-hook target
-# or to PDF in the pdf-local target.
+# List of man pages to convert to PDF and plain text in the dist-hook target.
 manfiles = \
 	src/xz/xz.1 \
 	src/xzdec/xzdec.1 \
@@ -71,53 +88,47 @@ manfiles = \
 	src/scripts/xzless.1 \
 	src/scripts/xzmore.1
 
-# Create ChangeLog using "git log".
-# Convert the man pages to plain text (ASCII only) format.
+# Create ChangeLog from output of "git log --date=iso --stat".
+# Convert the man pages to PDF and plain text (ASCII only) formats.
 dist-hook:
 	if test -d "$(srcdir)/.git" && type git > /dev/null 2>&1; then \
-		( cd "$(srcdir)" && git log --pretty=medium --date=iso --stat \
-			b69da6d4bb6bb11fc0cf066920791990d2b22a06^..HEAD ) \
+		( cd "$(srcdir)" && git log --date=iso --stat \
+			6060f7dc76fd6c2a8a1f8e85d0e4d86bb78273e6^..HEAD ) \
 			> "$(distdir)/ChangeLog"; \
 	fi
-	if type groff > /dev/null 2>&1; then \
+	if type groff > /dev/null 2>&1 && type ps2pdf > /dev/null 2>&1; then \
 		dest="$(distdir)/doc/man" && \
-		$(MKDIR_P) "$$dest/txt" && \
+		$(MKDIR_P) "$$dest/pdf-a4" "$$dest/pdf-letter" "$$dest/txt" && \
 		for FILE in $(manfiles); do \
 			BASE=`basename $$FILE .1` && \
-			$(SHELL) "$(srcdir)/build-aux/manconv.sh" ascii \
+			sh "$(srcdir)/build-aux/manconv.sh" pdf a4 \
+				< "$(srcdir)/$$FILE" \
+				> "$$dest/pdf-a4/$$BASE-a4.pdf" && \
+			sh "$(srcdir)/build-aux/manconv.sh" pdf letter \
+				< "$(srcdir)/$$FILE" \
+				> "$$dest/pdf-letter/$$BASE-letter.pdf" && \
+			sh "$(srcdir)/build-aux/manconv.sh" ascii \
 				< "$(srcdir)/$$FILE" \
 				> "$$dest/txt/$$BASE.txt"; \
 		done; \
 	fi
-	cd "$(distdir)" && $(SHELL) "build-aux/license-check.sh"
+	if test -d "$(srcdir)/doc/api" ; then \
+		$(MKDIR_P) "$(distdir)/doc/api" && \
+		$(INSTALL_DATA) "$(srcdir)"/doc/api/* \
+			"$(distdir)/doc/api"; \
+	fi
 
 # This works with GNU tar and gives cleaner package than normal 'make dist'.
-# This also ensures that the translations are up to date (dist-hook
+# This also ensures that the man page translations are up to date (dist-hook
 # would be too late for that).
 mydist:
-	$(SHELL) "$(srcdir)/src/liblzma/validate_map.sh"
-	cd po && $(MAKE) xz.pot-update
-	cd "$(srcdir)/po4a" && $(SHELL) update-po
+	sh "$(srcdir)/src/liblzma/validate_map.sh"
+	cd "$(srcdir)/po4a" && sh update-po
+	cd "$(srcdir)/doxygen" && sh update-doxygen
 	VERSION=$(VERSION); \
 	if test -d "$(srcdir)/.git" && type git > /dev/null 2>&1; then \
-		$(SHELL) "$(srcdir)/build-aux/license-check.sh" || exit 1; \
-		SNAPSHOT=`cd "$(srcdir)" && git describe --abbrev=8 | cut -b2-`; \
+		SNAPSHOT=`cd "$(srcdir)" && git describe --abbrev=4 | cut -b2-`; \
 		test -n "$$SNAPSHOT" && VERSION=$$SNAPSHOT; \
 	fi; \
-	TAR_OPTIONS='--owner=0 --group=0 --numeric-owner --mode=u+rw,go+r-w --sort=name' \
-		LC_COLLATE=C \
+	TAR_OPTIONS='--owner=0 --group=0 --numeric-owner --mode=u+rw,go+r-w' \
 		$(MAKE) VERSION="$$VERSION" dist-gzip
-
-# NOTE: This only creates the PDFs. The install rules are missing.
-pdf-local:
-	dest="doc/man" && \
-	$(MKDIR_P) "$$dest/pdf-a4" "$$dest/pdf-letter" && \
-	for FILE in $(manfiles); do \
-		BASE=`basename $$FILE .1` && \
-		$(SHELL) "$(srcdir)/build-aux/manconv.sh" pdf a4 \
-			< "$(srcdir)/$$FILE" \
-			> "$$dest/pdf-a4/$$BASE-a4.pdf" && \
-		$(SHELL) "$(srcdir)/build-aux/manconv.sh" pdf letter \
-			< "$(srcdir)/$$FILE" \
-			> "$$dest/pdf-letter/$$BASE-letter.pdf"; \
-	done

PACKAGERS

@@ -44,8 +44,8 @@ Information to packagers of XZ Utils
                         lzmadec binary for compatibility with LZMA Utils
         liblzma         liblzma.so.*
         liblzma-devel   liblzma.so, liblzma.a, API headers
-        liblzma-doc     Example programs and, if enabled at build time,
-                        Doxygen-generated liblzma API docs (HTML)
+        liblzma-doc     Doxygen-generated liblzma API docs (HTML),
+                        example programs
 
 
 2. Package description
@@ -124,15 +124,14 @@ Information to packagers of XZ Utils
 
     If the package manager supports a license field, you probably should
     put GPLv2+ there (GNU GPL v2 or later). The interesting parts of
-    XZ Utils are under the BSD Zero Clause License (0BSD), but some less
-    important files ending up into the binary package are under GPLv2+.
-    So it is simplest to just say GPLv2+ if you cannot specify
-    "BSD0 and GPLv2+".
+    XZ Utils are in the public domain, but some less important files
+    ending up into the binary package are under GPLv2+. So it is simplest
+    to just say GPLv2+ if you cannot specify "public domain and GPLv2+".
 
     If you split XZ Utils into multiple packages as described earlier
     in this file, liblzma and liblzma-dev packages will contain only
-    0BSD-licensed code from XZ Utils (compiler or linker may add some
-    third-party code which may have other licenses).
+    public domain code (from XZ Utils at least; compiler or linker may
+    add some third-party code, which may be copyrighted).
 
 
 4. configure options
@@ -170,14 +169,13 @@ Information to packagers of XZ Utils
     can be replaced with a symlink if your distro ships with shared
     copies of the common license texts.
 
-    The Doxygen-generated liblzma API documentation (HTML) is built and
-    installed if the configure option --enable-doxygen is used (it's
-    disabled by default). This requires that Doxygen is available. The
-    API documentation is installed by "make install" to $docdir/api.
-
-        NOTE: The files generated by Doxygen include content from
-        Doxygen itself. Check the license info before distributing
-        the Doxygen-generated files.
+    The Doxygen-generated documentation (HTML) for the liblzma API
+    headers is included in the source release and will be installed by
+    "make install" to $docdir/api. All JavaScript is removed to
+    simplify license compliance and to reduce the install size. If the
+    liblzma API documentation is not desired, either run configure with
+    --disable-doc or remove the doc/api directory before running
+    "make install".
 
 
 6. Extra files

README

@@ -10,7 +10,6 @@ XZ Utils
     2. Version numbering
     3. Reporting bugs
     4. Translations
-       4.1. Testing translations
     5. Other implementations of the .xz format
     6. Contact information
 
@@ -68,25 +67,24 @@ XZ Utils
 
 1.1. Overall documentation
 
-    README                This file
+    README              This file
 
-    INSTALL.generic       Generic install instructions for those not
-                          familiar with packages using GNU Autotools
-    INSTALL               Installation instructions specific to XZ Utils
-    PACKAGERS             Information to packagers of XZ Utils
+    INSTALL.generic     Generic install instructions for those not familiar
+                        with packages using GNU Autotools
+    INSTALL             Installation instructions specific to XZ Utils
+    PACKAGERS           Information to packagers of XZ Utils
 
-    COPYING               XZ Utils copyright and license information
-    COPYING.0BSD          BSD Zero Clause License
-    COPYING.GPLv2         GNU General Public License version 2
-    COPYING.GPLv3         GNU General Public License version 3
-    COPYING.LGPLv2.1      GNU Lesser General Public License version 2.1
+    COPYING             XZ Utils copyright and license information
+    COPYING.GPLv2       GNU General Public License version 2
+    COPYING.GPLv3       GNU General Public License version 3
+    COPYING.LGPLv2.1    GNU Lesser General Public License version 2.1
 
-    AUTHORS               The main authors of XZ Utils
-    THANKS                Incomplete list of people who have helped making
-                          this software
-    NEWS                  User-visible changes between XZ Utils releases
-    ChangeLog             Detailed list of changes (commit log)
-    TODO                  Known bugs and some sort of to-do list
+    AUTHORS             The main authors of XZ Utils
+    THANKS              Incomplete list of people who have helped making
+                        this software
+    NEWS                User-visible changes between XZ Utils releases
+    ChangeLog           Detailed list of changes (commit log)
+    TODO                Known bugs and some sort of to-do list
 
     Note that only some of the above files are included in binary
     packages.
@@ -96,9 +94,9 @@ XZ Utils
 
     The command-line tools are documented as man pages. In source code
     releases (and possibly also in some binary packages), the man pages
-    are also provided in plain text (ASCII only) format in the directory
-    "doc/man" to make the man pages more accessible to those whose
-    operating system doesn't provide an easy way to view man pages.
+    are also provided in plain text (ASCII only) and PDF formats in the
+    directory "doc/man" to make the man pages more accessible to those
+    whose operating system doesn't provide an easy way to view man pages.
 
 
 1.3. Documentation for liblzma
@@ -204,47 +202,77 @@ XZ Utils
 
         https://translationproject.org/html/translators.html
 
-    Updates to translations won't be accepted by methods that bypass
-    the Translation Project because there is a risk of duplicate work:
-    translation updates made in the xz repository aren't seen by the
-    translators in the Translation Project. If you have found bugs in
-    a translation, please report them to the Language-Team address
-    which can be found near the beginning of the PO file.
+    Below are notes and testing instructions specific to xz
+    translations.
 
-    If you find language problems in the original English strings,
-    feel free to suggest improvements. Ask if something is unclear.
-
-
-4.1. Testing translations
-
-    Testing can be done by installing xz into a temporary directory.
-
-    If building from Git repository (not tarball), generate the
-    Autotools files:
-
-        ./autogen.sh
-
-    Create a subdirectory for the build files. The tmp-build directory
-    can be deleted after testing.
-
-        mkdir tmp-build
-        cd tmp-build
-        ../configure --disable-shared --enable-debug --prefix=$PWD/inst
-
-    Edit the .po file in the po directory. Then build and install to
-    the "tmp-build/inst" directory, and use translations.bash to see
-    how some of the messages look. Repeat these  steps if needed:
+    Testing can be done by installing xz into a temporary directory:
 
+        ./configure --disable-shared --prefix=/tmp/xz-test
+        # <Edit the .po file in the po directory.>
         make -C po update-po
-        make -j"$(nproc)" install
-        bash ../debug/translation.bash | less
-        bash ../debug/translation.bash | less -S  # For --list outputs
+        make install
+        bash debug/translation.bash | less
+        bash debug/translation.bash | less -S  # For --list outputs
 
-    To test other languages, set the LANGUAGE environment variable
-    before running translations.bash. The value should match the PO file
-    name without the .po suffix. Example:
+    Repeat the above as needed (no need to re-run configure though).
 
-        export LANGUAGE=fi
+    Note especially the following:
+
+      - The output of --help and --long-help must look nice on
+        an 80-column terminal. It's OK to add extra lines if needed.
+
+      - In contrast, don't add extra lines to error messages and such.
+        They are often preceded with e.g. a filename on the same line,
+        so you have no way to predict where to put a \n. Let the terminal
+        do the wrapping even if it looks ugly. Adding new lines will be
+        even uglier in the generic case even if it looks nice in a few
+        limited examples.
+
+      - Be careful with column alignment in tables and table-like output
+        (--list, --list --verbose --verbose, --info-memory, --help, and
+        --long-help):
+
+          * All descriptions of options in --help should start in the
+            same column (but it doesn't need to be the same column as
+            in the English messages; just be consistent if you change it).
+            Check that both --help and --long-help look OK, since they
+            share several strings.
+
+          * --list --verbose and --info-memory print lines that have
+            the format "Description:   %s". If you need a longer
+            description, you can put extra space between the colon
+            and %s. Then you may need to add extra space to other
+            strings too so that the result as a whole looks good (all
+            values start at the same column).
+
+          * The columns of the actual tables in --list --verbose --verbose
+            should be aligned properly. Abbreviate if necessary. It might
+            be good to keep at least 2 or 3 spaces between column headings
+            and avoid spaces in the headings so that the columns stand out
+            better, but this is a matter of opinion. Do what you think
+            looks best.
+
+      - Be careful to put a period at the end of a sentence when the
+        original version has it, and don't put it when the original
+        doesn't have it. Similarly, be careful with \n characters
+        at the beginning and end of the strings.
+
+      - Read the TRANSLATORS comments that have been extracted from the
+        source code and included in xz.pot. Some comments suggest
+        testing with a specific command which needs an .xz file. You
+        may use e.g. any tests/files/good-*.xz. However, these test
+        commands are included in translations.bash output, so reading
+        translations.bash output carefully can be enough.
+
+      - If you find language problems in the original English strings,
+        feel free to suggest improvements. Ask if something is unclear.
+
+      - The translated messages should be understandable (sometimes this
+        may be a problem with the original English messages too). Don't
+        make a direct word-by-word translation from English especially if
+        the result doesn't sound good in your language.
+
+    Thanks for your help!
 
 
 5. Other implementations of the .xz format
@@ -269,13 +297,11 @@ XZ Utils
 6. Contact information
 ----------------------
 
-    XZ Utils in general:
-      - Home page: https://tukaani.org/xz/
-      - Email to maintainer(s): xz@tukaani.org
-      - IRC: #tukaani on Libera Chat
-      - GitHub: https://github.com/tukaani-project/xz
+    If you have questions, bug reports, patches etc. related to XZ Utils,
+    the project maintainers Lasse Collin and Jia Tan can be reached via
+    <xz@tukaani.org>.
 
-    Lead maintainer:
-      - Email: Lasse Collin <lasse.collin@tukaani.org>
-      - IRC: Larhzu on Libera Chat
+    You might find Lasse also from #tukaani on Libera Chat (IRC).
+    The nick is Larhzu. The channel tends to be pretty quiet,
+    so just ask your question and someone might wake up.
 

THANKS

@@ -3,252 +3,169 @@ Thanks
 ======
 
 Some people have helped more, some less, but nevertheless everyone's help
-has been important. :-)
-  - Adam Borowski
-  - Adam Walling
-  - Adrien Nader
-  - Agostino Sarubbo
-  - Alexander Bluhm
-  - Alexander M. Greenham
-  - Alexander Neumann
-  - Alexandre Sauvé
-  - Alexey Tourbin
-  - Anders F. Björklund
-  - Andraž 'ruskie' Levstik
-  - Andre Noll
-  - Andreas K. Hüttel
-  - Andreas Müller
-  - Andreas Schwab
-  - Andreas Zieringer
-  - Andrej Skenderija
-  - Andres Freund
-  - Andrew Dudman
-  - Andrew Murray
-  - Antoine Cœur
-  - Anton Kochkov
-  - Antonio Diaz Diaz
-  - Arkadiusz Miskiewicz
-  - Asgeir Storesund Nilsen
-  - Aziz Chaudhry
-  - Bela Lubkin
-  - Ben Boeckel
-  - Benjamin Buch
-  - Benno Schulenberg
-  - Bernhard Reutner-Fischer
-  - Bert Wesarg
-  - Bhargava Shastry
-  - Bill Glessner
-  - Bjarni Ingi Gislason
-  - Boud Roukema
-  - Brad Smith
-  - Bruce Stark
-  - Cary Lewis
-  - Charles Wilson
-  - Chenxi Mao
-  - Chien Wong
-  - Chris Donawa
-  - Chris McCrohan
-  - Christian Hesse
-  - Christian Kujau
-  - Christian von Roques
-  - Christian Weisgerber
-  - Christoph Junghans
-  - Collin Funk
-  - Conley Moorhous
-  - Cristian Rodríguez
-  - Cristiano Ceglia
-  - Dan Shechter
-  - Dan Stromberg
-  - Dan Weiss
-  - Daniel Leonard
-  - Daniel Mealha Cabrita
-  - Daniel Packard
-  - Daniel Richard G.
-  - David Burklund
-  - Denis Excoffier
-  - Derwin McGeary
-  - Dexter Castor Döpping
-  - Diederik de Haas
-  - Diego Elio Pettenò
-  - Dimitri Papadopoulos Orfanos
-  - Dirk Müller
-  - Douglas Thor
-  - Ed Maste
-  - Elbert Pol
-  - Eli Schwartz
-  - Elijah Almeida Coimbra
-  - Émilie Labbé
-  - Emmanuel Blot
-  - Eric Lindblad
-  - Eric S. Raymond
-  - Étienne Mollier
-  - Evan Nemerson
-  - Fangrui Song
-  - Felix Collin
-  - Filip Palian
-  - Firas Khalil Khana
-  - François Etcheverry
-  - Frank Busse
-  - Frank Prochnow
-  - Fredrik Wikstrom
-  - Gabi Davar
-  - Gabriela Gutierrez
-  - Gilles Espinasse
-  - Gregory Margo
-  - Guillaume Outters
-  - Guiorgy Potskhishvili
+has been important. :-) In alphabetical order:
+  - Mark Adler
   - H. Peter Anvin
-  - Hajin Jang
-  - Hans Jansen
-  - Harri K. Koskinen
-  - Hin-Tak Leung
-  - H.J. Lu
-  - Hongbo Ni
-  - Igor Pavlov
-  - İhsan Doğan
-  - Ilya Kurdyukov
-  - Iouri Kharon
-  - İsmail Dönmez
-  - Ivan A. Melnikov
-  - Jakub Bogusz
-  - James Buren
-  - James M Leddy
-  - Jan Kratochvil
-  - Jan Terje Hansen
-  - Jason Gorski
   - Jeff Bastian
-  - Jeffrey Walton
-  - Jeroen Roovers
-  - Jim Meyering
-  - Jim Wilcoxson
-  - Joachim Henke
-  - John Paul Adrian Glaubitz
-  - Jonathan Nieder
-  - Jonathan Stott
-  - Joona Kannisto
-  - Jouk Jansen
-  - Juan Manuel Guerrero
-  - Jukka Salmi
-  - Julien Marrec
-  - Jun I Jin
-  - Kai Pastor
+  - Nelson H. F. Beebe
   - Karl Beldan
   - Karl Berry
-  - Keith Patton
-  - Kelvin Lee
-  - Kevin R. Bulgrien
-  - Kian-Meng Ang
-  - Kim Jinyeong
-  - Kirill A. Korinsky
-  - Kiyoshi Kanazawa
-  - Lars Wirzenius
-  - Li Chenggang
-  - Lizandro Heredia
-  - Loganaden Velvindron
-  - Lorenzo De Liso
-  - Lukas Braune
-  - Maarten Bosmans
-  - Maksym Vatsyk
-  - Marcin Kowalczyk
-  - Marcus Comstedt
-  - Marcus Tillmanns
-  - Marek Černocký
-  - Mark Adler
-  - Mark Wielaard
-  - Markus Duft
-  - Markus Rickert
-  - Martin Blumenstingl
-  - Martin Matuška
-  - Martin Storsjö
-  - Martin Väth
-  - Mathieu Vachon
-  - Matthew Good
-  - Matthieu Rakotojaona
+  - Anders F. Björklund
+  - Emmanuel Blot
   - Melanie Blower
+  - Alexander Bluhm
+  - Martin Blumenstingl
+  - Ben Boeckel
+  - Jakub Bogusz
+  - Adam Borowski
+  - Maarten Bosmans
+  - Lukas Braune
+  - Benjamin Buch
+  - Trent W. Buck
+  - Kevin R. Bulgrien
+  - James Buren
+  - David Burklund
+  - Frank Busse
+  - Daniel Mealha Cabrita
+  - Milo Casagrande
+  - Marek Černocký
+  - Tomer Chachamu
+  - Vitaly Chikunov
+  - Antoine Cœur
+  - Gabi Davar
+  - İhsan Doğan
+  - Chris Donawa
+  - Andrew Dudman
+  - Markus Duft
+  - İsmail Dönmez
+  - Paul Eggert
+  - Robert Elz
+  - Gilles Espinasse
+  - Denis Excoffier
+  - Vincent Fazio
   - Michael Felt
   - Michael Fox
-  - Michał Górny
   - Mike Frysinger
-  - Mikko Pouru
-  - Milo Casagrande
-  - Mohammed Adnène Trojette
-  - Nathan Moinvaziri
-  - Nelson H. F. Beebe
-  - Nicholas Jackson
-  - Ole André Vadla Ravnås
-  - Orange Tsai
-  - Orgad Shaneh
-  - Patrick J. Volkerding
-  - Paul Eggert
-  - Paul Townsend
-  - Pavel Raiskup
-  - Per Øyvind Karlsen
-  - Peter Ivanov
-  - Peter Lawler
-  - Peter O'Gorman
-  - Peter Pallinger
-  - Peter Seiderer
-  - Pierre-Yves Martin
-  - Pilorz Wojciech
-  - Pippijn van Steenhoven
-  - Rafał Mużyło
-  - Rainer Müller
-  - Ralf Wildenhues
-  - Rich Prohaska
-  - Richard Koch
-  - Richard W.M. Jones
-  - Robert Elz
-  - Robert Readman
-  - Roel Bouckaert
-  - Ron Desmond
-  - Ruarí Ødegaard
-  - Rui Paulo
-  - Ryan Colyer
-  - Ryan Young
-  - Sam James
-  - Scott McAllister
-  - Sean Fenian
-  - Sebastian Andrzej Siewior
-  - Sergey Kosukhin
-  - Simon Josefsson
-  - Siteshwar Vashisht
-  - Steffen Nurpmeso
-  - Stephan Kulow
-  - Stephen Sachs
-  - Stuart Shelton
-  - Taiki Tsunekawa
-  - Thomas Klausner
-  - Tobias Lahrmann Hansen
-  - Tobias Stoeckmann
+  - Daniel Richard G.
   - Tomasz Gajc
-  - Tomer Chachamu
-  - Torsten Rupp
-  - Trần Ngọc Quân
-  - Trent W. Buck
-  - Victoria Alexia
-  - Vijay Sarvepalli
-  - Ville Koskinen
-  - Ville Skyttä
-  - Vincent Cruz
-  - Vincent Fazio
-  - Vincent Lefevre
-  - Vincent Torri
-  - Vincent Wixsom
+  - Bjarni Ingi Gislason
+  - John Paul Adrian Glaubitz
+  - Bill Glessner
+  - Michał Górny
+  - Jason Gorski
+  - Juan Manuel Guerrero
+  - Diederik de Haas
+  - Joachim Henke
+  - Christian Hesse
   - Vincenzo Innocente
-  - Vitaly Chikunov
+  - Peter Ivanov
+  - Nicholas Jackson
+  - Sam James
+  - Hajin Jang
+  - Jouk Jansen
+  - Jun I Jin
+  - Kiyoshi Kanazawa
+  - Joona Kannisto
+  - Per Øyvind Karlsen
+  - Iouri Kharon
+  - Thomas Klausner
+  - Richard Koch
+  - Anton Kochkov
+  - Ville Koskinen
+  - Marcin Kowalczyk
+  - Jan Kratochvil
+  - Christian Kujau
+  - Stephan Kulow
+  - Ilya Kurdyukov
+  - Peter Lawler
+  - James M Leddy
+  - Vincent Lefevre
+  - Hin-Tak Leung
+  - Andraž 'ruskie' Levstik
+  - Cary Lewis
   - Wim Lewis
-  - Xi Ruoyao
   - Xin Li
-  - Yifeng Li
-  - 榆柳松 (ZhengSen Wang)
-
-Companies:
-  - Google
-  - Sandfly Security
-
-Other credits:
-  - cleemy desu wayo working with Trend Micro Zero Day Initiative
-  - Orange Tsai and splitline from DEVCORE Research Team
+  - Eric Lindblad
+  - Lorenzo De Liso
+  - H.J. Lu
+  - Bela Lubkin
+  - Gregory Margo
+  - Julien Marrec
+  - Ed Maste
+  - Martin Matuška
+  - Ivan A. Melnikov
+  - Jim Meyering
+  - Arkadiusz Miskiewicz
+  - Nathan Moinvaziri
+  - Étienne Mollier
+  - Conley Moorhous
+  - Rafał Mużyło
+  - Adrien Nader
+  - Evan Nemerson
+  - Hongbo Ni
+  - Jonathan Nieder
+  - Andre Noll
+  - Peter O'Gorman
+  - Dimitri Papadopoulos Orfanos
+  - Daniel Packard
+  - Filip Palian
+  - Peter Pallinger
+  - Rui Paulo
+  - Igor Pavlov
+  - Diego Elio Pettenò
+  - Elbert Pol
+  - Mikko Pouru
+  - Rich Prohaska
+  - Trần Ngọc Quân
+  - Pavel Raiskup
+  - Ole André Vadla Ravnås
+  - Eric S. Raymond
+  - Robert Readman
+  - Bernhard Reutner-Fischer
+  - Markus Rickert
+  - Cristian Rodríguez
+  - Christian von Roques
+  - Boud Roukema
+  - Torsten Rupp
+  - Stephen Sachs
+  - Jukka Salmi
+  - Agostino Sarubbo
+  - Alexandre Sauvé
+  - Benno Schulenberg
+  - Andreas Schwab
+  - Bhargava Shastry
+  - Dan Shechter
+  - Stuart Shelton
+  - Sebastian Andrzej Siewior
+  - Ville Skyttä
+  - Brad Smith
+  - Bruce Stark
+  - Pippijn van Steenhoven
+  - Martin Storsjö
+  - Jonathan Stott
+  - Dan Stromberg
+  - Jia Tan
+  - Vincent Torri
+  - Paul Townsend
+  - Mohammed Adnène Trojette
+  - Alexey Tourbin
+  - Taiki Tsunekawa
+  - Loganaden Velvindron
+  - Patrick J. Volkerding
+  - Martin Väth
+  - Adam Walling
+  - Jeffrey Walton
+  - Christian Weisgerber
+  - Dan Weiss
+  - Bert Wesarg
+  - Fredrik Wikstrom
+  - Jim Wilcoxson
+  - Ralf Wildenhues
+  - Charles Wilson
+  - Lars Wirzenius
+  - Pilorz Wojciech
+  - Ryan Young
+  - Andreas Zieringer
 
 Also thanks to all the people who have participated in the Tukaani project.
 

TODO

@@ -5,7 +5,12 @@ XZ Utils To-Do List
 Known bugs
 ----------
 
-    The test suite is incomplete.
+    The test suite is too incomplete.
+
+    If the memory usage limit is less than about 13 MiB, xz is unable to
+    automatically scale down the compression settings enough even though
+    it would be  possible by switching from BT2/BT3/BT4 match finder to
+    HC3/HC4.
 
     XZ Utils compress some files significantly worse than LZMA Utils.
     This is due to faster compression presets used by XZ Utils, and
@@ -14,8 +19,15 @@ Known bugs
     compress extremely well, so going from compression ratio of 0.003
     to 0.004 means big relative increase in the compressed file size.
 
+    xz doesn't quote unprintable characters when it displays file names
+    given on the command line.
+
     tuklib_exit() doesn't block signals => EINTR is possible.
 
+    SIGTSTP is not handled. If xz is stopped, the estimated remaining
+    time and calculated (de)compression speed won't make sense in the
+    progress indicator (xz --verbose).
+
     If liblzma has created threads and fork() gets called, liblzma
     code will break in the child process unless it calls exec() and
     doesn't touch liblzma.
@@ -33,6 +45,9 @@ Missing features
     be mostly useful when using a preset dictionary in LZMA2, but
     it may have other uses too. Compare to deflateCopy() in zlib.
 
+    Support LZMA_FINISH in raw decoder to indicate end of LZMA1 and
+    other streams that don't have an end of payload marker.
+
     Adjust dictionary size when the input file size is known.
     Maybe do this only if an option is given.
 
@@ -56,9 +71,9 @@ Missing features
     Support LZMA_FULL_FLUSH for lzma_stream_decoder() to stop at
     Block and Stream boundaries.
 
-    Error codes from lzma_code() aren't very specific. A more detailed
-    error message (string) could be provided too. It could be returned
-    by a new function or use a currently-reserved member of lzma_stream.
+    lzma_strerror() to convert lzma_ret to human readable form?
+    This is tricky, because the same error codes are used with
+    slightly different meanings, and this cannot be fixed anymore.
 
     Make it possible to adjust LZMA2 options in the middle of a Block
     so that the encoding speed vs. compression ratio can be optimized
@@ -86,3 +101,9 @@ Documentation
 
     Document the LZMA1 and LZMA2 algorithms.
 
+
+Miscellaneous
+------------
+
+    Try to get the media type for .xz registered at IANA.
+

autogen.sh

@@ -1,10 +1,12 @@
 #!/bin/sh
-# SPDX-License-Identifier: 0BSD
 
 ###############################################################################
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 ###############################################################################
 
 set -e -x
@@ -17,12 +19,14 @@ ${AUTOCONF:-autoconf}
 ${AUTOHEADER:-autoheader}
 ${AUTOMAKE:-automake} -acf --foreign
 
-# Generate the translated man pages if the "po4a" tool is available.
+# Generate the translated man pages and the doxygen documentation if the
+# "po4a" and "doxygen" tools are available.
 # This is *NOT* done by "autoreconf -fi" or when "make" is run.
-# Pass --no-po4a to this script to skip this step.
-# It can be useful when you know that po4a isn't available and
+# Pass --no-po4a or --no-doxygen to this script to skip these steps.
+# It can be useful when you know that po4a or doxygen aren't available and
 # don't want autogen.sh to exit with non-zero exit status.
 generate_po4a="y"
+generate_doxygen="y"
 
 for arg in "$@"
 do
@@ -30,6 +34,10 @@ do
 		"--no-po4a")
 			generate_po4a="n"
 			;;
+
+		"--no-doxygen")
+			generate_doxygen="n"
+			;;
 	esac
 done
 
@@ -39,4 +47,10 @@ if test "$generate_po4a" != "n"; then
 	cd ..
 fi
 
+if test "$generate_doxygen" != "n"; then
+	cd doxygen
+	sh update-doxygen
+	cd ..
+fi
+
 exit 0

build-aux/ci_build.bash

@@ -1,295 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
-#
-# Script meant to be used for Continuous Integration automation for POSIX
-# systems. On GitHub, this is used by Ubuntu and MacOS builds.
-#
-#############################################################################
-#
-# Author: Jia Tan
-#
-#############################################################################
-
-set -e
-
-USAGE="Usage: $0
-  -a [autogen flags]
-  -b [autotools|cmake]
-  -c [crc32|crc64|sha256]
-  -d [encoders|decoders|bcj|delta|threads|shared|nls|small|clmul|sandbox]
-  -f [CFLAGS]
-  -l [destdir]
-  -m [compiler]
-  -n [ARTIFACTS_DIR_NAME]
-  -p [all|build|test]
-  -s [srcdir]"
-
-# Absolute path of script directory
-ABS_DIR=$(cd -- "$(dirname -- "$0")" && pwd)
-
-# Default CLI option values
-AUTOGEN_FLAGS=""
-BUILD_SYSTEM="autotools"
-CHECK_TYPE="crc32,crc64,sha256"
-BCJ="y"
-DELTA="y"
-ENCODERS="y"
-DECODERS="y"
-THREADS="y"
-SHARED="y"
-NATIVE_LANG_SUPPORT="y"
-SMALL="n"
-CLMUL="y"
-SANDBOX="y"
-DOXYGEN="y"
-SRC_DIR="$ABS_DIR/../"
-DEST_DIR="$SRC_DIR/../xz_build"
-PHASE="all"
-ARTIFACTS_DIR_NAME="output"
-
-[[ -z ${CPU_COUNT} ]] && { CPU_COUNT=$(nproc 2>/dev/null || sysctl -n hw.activecpu); }
-[[ -z ${MAKEFLAGS} ]] && export MAKEFLAGS="-j${CPU_COUNT} -l${CPU_COUNT}"
-[[ -z ${CFLAGS} ]] && export CFLAGS="-O2"
-
-###################
-# Parse arguments #
-###################
-
-while getopts a:b:c:d:l:m:n:s:p:f:w:h opt; do
-	# b option can have either value "autotools" OR "cmake"
-	case ${opt} in
-	h)
-		echo "$USAGE"
-		exit 0
-	;;
-	a)
-		AUTOGEN_FLAGS="$OPTARG"
-	;;
-	b)
-		case "$OPTARG" in
-			autotools) ;;
-			cmake) ;;
-			*) echo "Invalid build system: $OPTARG"; exit 1;;
-		esac
-		BUILD_SYSTEM="$OPTARG"
-	;;
-	c) CHECK_TYPE="$OPTARG"
-	;;
-	# d options can be a comma separated list of things to disable at
-	# configure time
-	d)
-	for disable_arg in $(echo "$OPTARG" | sed "s/,/ /g"); do
-		case "$disable_arg" in
-		encoders) ENCODERS="n" ;;
-		decoders) DECODERS="n" ;;
-		bcj) BCJ="n" ;;
-		delta) DELTA="n" ;;
-		threads) THREADS="n" ;;
-		shared) SHARED="n";;
-		nls) NATIVE_LANG_SUPPORT="n";;
-		small) SMALL="y";;
-		clmul) CLMUL="n";;
-		sandbox) SANDBOX="n";;
-		doxygen) DOXYGEN="n";;
-		*) echo "Invalid disable value: $disable_arg"; exit 1 ;;
-		esac
-	done
-	;;
-	l) DEST_DIR="$OPTARG"
-	;;
-	m)
-		CC="$OPTARG"
-		export CC
-	;;
-	n) ARTIFACTS_DIR_NAME="$OPTARG"
-	;;
-	s) SRC_DIR="$OPTARG"
-	;;
-	p) PHASE="$OPTARG"
-	;;
-	f)
-		CFLAGS+=" $OPTARG"
-		export CFLAGS
-	;;
-	w) WRAPPER="$OPTARG"
-	;;
-	*)
-		echo "Unsupported option: $opt"
-		exit 1
-	;;
-	esac
-done
-
-
-####################
-# Helper Functions #
-####################
-
-# These two functions essentially implement the ternary "?" operator.
-add_extra_option() {
-	# First argument is option value ("y" or "n")
-	# Second argument is option to set if "y"
-	# Third argument is option to set if "n"
-	if [ "$1" = "y" ]
-	then
-		EXTRA_OPTIONS="$EXTRA_OPTIONS $2"
-	else
-		EXTRA_OPTIONS="$EXTRA_OPTIONS $3"
-	fi
-}
-
-
-add_to_filter_list() {
-	# First argument is option value ("y" or "n")
-	# Second argument is option to set if "y"
-	if [ "$1" = "y" ]
-	then
-		FILTER_LIST="$FILTER_LIST$2"
-	fi
-}
-
-
-###############
-# Build Phase #
-###############
-
-if [ "$PHASE" = "all" ] || [ "$PHASE" = "build" ]
-then
-	# Checksum options should be specified differently based on the
-	# build system. It must be calculated here since we won't know
-	# the build system used until all args have been parsed.
-	# Autotools - comma separated
-	# CMake - semi-colon separated
-	if [ "$BUILD_SYSTEM" = "autotools" ]
-	then
-		SEP=","
-	else
-		SEP=";"
-	fi
-
-	CHECK_TYPE_TEMP=""
-	for crc in $(echo "$CHECK_TYPE" | sed "s/,/ /g"); do
-			case "$crc" in
-			crc32 | crc64 | sha256) ;;
-			*) echo "Invalid check type: $crc"; exit 1 ;;
-			esac
-
-			CHECK_TYPE_TEMP="$CHECK_TYPE_TEMP$SEP$crc"
-	done
-
-	# Remove the first character from $CHECK_TYPE_TEMP since it will
-	# always be the delimiter.
-	CHECK_TYPE="${CHECK_TYPE_TEMP:1}"
-
-	FILTER_LIST="lzma1$SEP"lzma2
-
-	# Build based on arguments
-	mkdir -p "$DEST_DIR"
-
-	# Generate configure option values
-	EXTRA_OPTIONS=""
-
-	case $BUILD_SYSTEM in
-	autotools)
-		cd "$SRC_DIR"
-
-		# Run autogen.sh script if not already run
-		if [ ! -f configure ]
-		then
-			./autogen.sh "$AUTOGEN_FLAGS"
-		fi
-
-		cd "$DEST_DIR"
-
-		add_to_filter_list "$BCJ" ",x86,powerpc,ia64,arm,armthumb,arm64,sparc,riscv"
-		add_to_filter_list "$DELTA" ",delta"
-
-		add_extra_option "$ENCODERS" "--enable-encoders=$FILTER_LIST" "--disable-encoders"
-		add_extra_option "$DECODERS" "--enable-decoders=$FILTER_LIST" "--disable-decoders"
-		add_extra_option "$THREADS" "" "--disable-threads"
-		add_extra_option "$SHARED" "" "--disable-shared"
-		add_extra_option "$NATIVE_LANG_SUPPORT" "" "--disable-nls"
-		add_extra_option "$SMALL" "--enable-small" ""
-		add_extra_option "$CLMUL" "" "--disable-clmul-crc"
-		add_extra_option "$SANDBOX" "" "--disable-sandbox"
-		add_extra_option "$DOXYGEN" "--enable-doxygen" ""
-
-		# Workaround a bug in too old config.guess. Version with
-		# timestamp='2022-05-08' would be needed but the autotools-dev
-		# package has 2022-01-09 in Ubuntu 22.04LTS and 24.04LTS. The
-		# bug breaks i386 assembler usage autodetection.
-		if "$SRC_DIR/build-aux/config.guess" | grep -q x86_64-pc-linux-gnux32
-		then
-			EXTRA_OPTIONS="$EXTRA_OPTIONS --build=i686-pc-linux-gnu"
-		fi
-
-		# Run configure script
-		"$SRC_DIR"/configure --enable-werror --enable-checks="$CHECK_TYPE" $EXTRA_OPTIONS --config-cache
-
-		# Build the project
-		make
-	;;
-	cmake)
-		cd "$DEST_DIR"
-
-		add_to_filter_list "$BCJ" ";x86;powerpc;ia64;arm;armthumb;arm64;sparc;riscv"
-		add_to_filter_list "$DELTA" ";delta"
-
-		add_extra_option "$THREADS" "-DXZ_THREADS=yes" "-DXZ_THREADS=no"
-
-		# Disable MicroLZMA if encoders are not configured.
-		add_extra_option "$ENCODERS" "-DXZ_ENCODERS=$FILTER_LIST" "-DXZ_ENCODERS= -DXZ_MICROLZMA_ENCODER=OFF"
-
-		# Disable MicroLZMA and lzip decoders if decoders are not configured.
-		add_extra_option "$DECODERS" "-DXZ_DECODERS=$FILTER_LIST" "-DXZ_DECODERS= -DXZ_MICROLZMA_DECODER=OFF -DXZ_LZIP_DECODER=OFF"
-
-		# CMake disables the shared library by default.
-		add_extra_option "$SHARED" "-DBUILD_SHARED_LIBS=ON" ""
-
-		add_extra_option "$NATIVE_LANG_SUPPORT" "" "-DXZ_NLS=OFF"
-		add_extra_option "$SMALL" "-DXZ_SMALL=ON" ""
-		add_extra_option "$DOXYGEN" "-DXZ_DOXYGEN=ON" ""
-
-		# Remove old cache file to clear previous settings.
-		rm -f "CMakeCache.txt"
-		cmake "$SRC_DIR/CMakeLists.txt" -B "$DEST_DIR" $EXTRA_OPTIONS -DXZ_CHECKS="$CHECK_TYPE" -G "Unix Makefiles"
-		cmake --build "$DEST_DIR"
-	;;
-	esac
-fi
-
-
-##############
-# Test Phase #
-##############
-
-if [ "$PHASE" = "all" ] || [ "$PHASE" = "test" ]
-then
-	case $BUILD_SYSTEM in
-	autotools)
-		cd "$DEST_DIR"
-		# If the tests fail, copy the test logs into the artifacts folder
-		if make check VERBOSE=1 LOG_COMPILER="$WRAPPER"
-		then
-			:
-		else
-			mkdir -p "$SRC_DIR/build-aux/artifacts/$ARTIFACTS_DIR_NAME"
-			cp ./tests/*.log "$SRC_DIR/build-aux/artifacts/$ARTIFACTS_DIR_NAME"
-			exit 1
-		fi
-	;;
-	cmake)
-		cd "$DEST_DIR"
-		if ${WRAPPER} make CTEST_OUTPUT_ON_FAILURE=1 test
-		then
-			:
-		else
-			mkdir -p "$SRC_DIR/build-aux/artifacts/$ARTIFACTS_DIR_NAME"
-			cp ./Testing/Temporary/*.log "$SRC_DIR/build-aux/artifacts/$ARTIFACTS_DIR_NAME"
-			exit 1
-		fi
-	;;
-	esac
-fi

build-aux/license-check.sh

@@ -1,177 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
-###############################################################################
-#
-# Look for missing license info in xz.git
-#
-# The project doesn't conform to the FSFE REUSE specification for now.
-# Instead, this script helps in finding files that lack license info.
-# Pass -v as an argument to get license info from all files in xz.git or,
-# when .git isn't available, from files extracted from a release tarball
-# (in case of a release tarball, the tree must be clean of any extra files).
-#
-# NOTE: This relies on non-POSIX xargs -0. It's supported on GNU and *BSDs.
-#
-###############################################################################
-#
-# Author: Lasse Collin
-#
-###############################################################################
-
-# Print good files too if -v is passed as an argument.
-VERBOSE=false
-case $1 in
-	'')
-		;;
-	-v)
-		VERBOSE=true
-		;;
-	*)
-		echo "Usage: $0 [-v]"
-		exit 1
-		;;
-esac
-
-
-# Use the C locale so that sorting is always the same.
-LC_ALL=C
-export LC_ALL
-
-
-# String to match the SPDX license identifier tag.
-# Spell it here in a way that doesn't match regular grep patterns.
-SPDX_LI='SPDX''-License-''Identifier'':'
-
-# Pattern for files that don't contain SPDX tags but they are under
-# a free license that isn't 0BSD.
-PAT_UNTAGGED_MISC='^COPYING\.
-^INSTALL\.generic$'
-
-# Pattern for files that are 0BSD but don't contain SPDX tags.
-# (The two file format specification files are public domain but
-# they can be treated as 0BSD too.)
-PAT_UNTAGGED_0BSD='^(.*/)?\.gitattributes$
-^(.*/)?\.gitignore$
-^\.github/SECURITY\.md$
-^AUTHORS$
-^COPYING$
-^ChangeLog$
-^INSTALL$
-^NEWS$
-^PACKAGERS$
-^(.*/)?README$
-^THANKS$
-^TODO$
-^(.*/)?[^/]+\.txt$
-^doc/SHA256SUMS$
-^po/LINGUAS$
-^src/common/w32_application\.manifest$
-^tests/xzgrep_expected_output$
-^tests/files/[^/]+\.(lz|lzma|xz)$'
-
-# Pattern for files that must be ignored when Git isn't available. This is
-# useful when this script is run right after extracting a release tarball.
-PAT_TARBALL_IGNORE='^(m4/)?[^/]*\.m4$
-^(.*/)?Makefile\.in(\.in)?$
-^(po|po4a)/.*[^.]..$
-^ABOUT-NLS$
-^build-aux/(config\..*|ltmain\.sh|[^.]*)$
-^config\.h\.in$
-^configure$'
-
-
-# Go to the top source dir.
-cd "$(dirname "$0")/.." || exit 1
-
-# Get the list of files to check from git if possible.
-# Otherwise list the whole source tree. This script should pass
-# if it is run right after extracting a release tarball.
-if test -d .git && type git > /dev/null 2>&1; then
-	FILES=$(git ls-files) || exit 1
-	IS_TARBALL=false
-else
-	FILES=$(find . -type f) || exit 1
-	FILES=$(printf '%s\n' "$FILES" | sed 's,^\./,,')
-	IS_TARBALL=true
-fi
-
-# Sort to keep the order consistent.
-FILES=$(printf '%s\n' "$FILES" | sort)
-
-
-# Find the tagged files.
-TAGGED=$(printf '%s\n' "$FILES" \
-	| tr '\n' '\000' | xargs -0r grep -l "$SPDX_LI" --)
-
-# Find the tagged 0BSD files.
-TAGGED_0BSD=$(printf '%s\n' "$TAGGED" \
-	| tr '\n' '\000' | xargs -0r grep -l "$SPDX_LI 0BSD" --)
-
-# Find the tagged non-0BSD files, that is, remove the 0BSD-tagged files
-# from the list of tagged files.
-TAGGED_MISC=$(printf '%s\n%s\n' "$TAGGED" "$TAGGED_0BSD" | sort | uniq -u)
-
-
-# Remove the tagged files from the list.
-FILES=$(printf '%s\n%s\n' "$FILES" "$TAGGED" | sort | uniq -u)
-
-# Find the intentionally-untagged files.
-UNTAGGED_0BSD=$(printf '%s\n' "$FILES" | grep -E "$PAT_UNTAGGED_0BSD")
-UNTAGGED_MISC=$(printf '%s\n' "$FILES" | grep -E "$PAT_UNTAGGED_MISC")
-
-# Remove the intentionally-untagged files from the list.
-FILES=$(printf '%s\n' "$FILES" | grep -Ev \
-	-e "$PAT_UNTAGGED_0BSD" -e "$PAT_UNTAGGED_MISC")
-
-
-# FIXME: Allow untagged translations if they have a public domain notice.
-# These are old translations that haven't been updated after 2024-02-14.
-# Eventually these should go away.
-PD_PO=$(printf '%s\n' "$FILES" | grep '\.po$' | tr '\n' '\000' \
-	| xargs -0r grep -Fl '# This file is put in the public domain.' --)
-
-if test -n "$PD_PO"; then
-	# Remove the public domain .po files from the list.
-	FILES=$(printf '%s\n%s\n' "$FILES" "$PD_PO" | sort | uniq -u)
-fi
-
-
-# Remove generated files from the list which don't have SPDX tags but which
-# can be present in release tarballs. This step is skipped when the file list
-# is from "git ls-files".
-GENERATED=
-if $IS_TARBALL; then
-	GENERATED=$(printf '%s\n' "$FILES" | grep -E "$PAT_TARBALL_IGNORE")
-	FILES=$(printf '%s\n' "$FILES" | grep -Ev "$PAT_TARBALL_IGNORE")
-fi
-
-
-if $VERBOSE; then
-	printf '# Tagged 0BSD files:\n%s\n\n' "$TAGGED_0BSD"
-	printf '# Intentionally untagged 0BSD:\n%s\n\n' "$UNTAGGED_0BSD"
-
-	# FIXME: Remove when no longer needed.
-	if test -n "$PD_PO"; then
-		printf '# Old public domain translations:\n%s\n\n' "$PD_PO"
-	fi
-
-	printf '# Tagged non-0BSD files:\n%s\n\n' "$TAGGED_MISC"
-	printf '# Intentionally untagged miscellaneous: \n%s\n\n' \
-		"$UNTAGGED_MISC"
-
-	if test -n "$GENERATED"; then
-		printf '# Generated files whose license was NOT checked:\n%s\n\n' \
-			"$GENERATED"
-	fi
-fi
-
-
-# Look for files with an unknown license and set the exit status accordingly.
-STATUS=0
-if test -n "$FILES"; then
-	printf '# ERROR: Licensing is unclear:\n%s\n' "$FILES"
-	STATUS=1
-fi
-
-exit "$STATUS"

build-aux/manconv.sh

@@ -1,6 +1,5 @@
 #!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
+#
 ###############################################################################
 #
 # Wrapper for GNU groff to convert man pages to a few formats
@@ -18,6 +17,9 @@
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 ###############################################################################
 
 FORMAT=$1
@@ -42,12 +44,12 @@ case $FORMAT in
 		groff -t -mandoc -Tutf8 -P-c | col -bx
 		;;
 	ps)
-		sed "$SED_PD" | groff -dpaper="$PAPER" -t -mandoc \
-				-rC1 -rS"$FONT" -Tps -P-p"$PAPER"
+		sed "$SED_PD" | groff -dpaper=$PAPER -t -mandoc \
+				-rC1 -rS$FONT -Tps -P-p$PAPER
 		;;
 	pdf)
-		sed "$SED_PD" | groff -dpaper="$PAPER" -t -mandoc \
-				-rC1 -rS"$FONT" -Tps -P-p"$PAPER" | ps2pdf - -
+		sed "$SED_PD" | groff -dpaper=$PAPER -t -mandoc \
+				-rC1 -rS$FONT -Tps -P-p$PAPER | ps2pdf - -
 		;;
 	*)
 		echo 'Invalid arguments' >&2

build-aux/version.sh

@@ -1,6 +1,5 @@
 #!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
+#
 #############################################################################
 #
 # Get the version string from version.h and print it out without
@@ -10,6 +9,9 @@
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 #############################################################################
 
 sed -n 's/LZMA_VERSION_STABILITY_ALPHA/alpha/
@@ -17,5 +19,6 @@ sed -n 's/LZMA_VERSION_STABILITY_ALPHA/alpha/
 	s/LZMA_VERSION_STABILITY_STABLE//
 	s/^#define LZMA_VERSION_[MPS][AIT][AJNT][A-Z]* //p' \
 	src/liblzma/api/lzma/version.h \
-	| sed 'N; N; N; s/\n/./; s/\n/./; s/\n//g' \
-	| tr -d '\012\015\025'
+	| tr '\n' '|' \
+	| sed 's/|/./; s/|/./; s/|//g' \
+	| tr -d '\r\n'

cmake/remove-ordinals.cmake

@@ -1,5 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
 #############################################################################
 #
 # remove-ordinals.cmake
@@ -18,6 +16,9 @@
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 #############################################################################
 
 file(READ "${INPUT_FILE}" STR)

cmake/tuklib_common.cmake

@@ -1,12 +1,11 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_common.cmake - common functions and macros for tuklib_*.cmake files
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 function(tuklib_add_definitions TARGET_OR_ALL DEFINITIONS)
     # DEFINITIONS may be an empty string/list but it's fine here. There is
@@ -26,29 +25,23 @@ endfunction()
 
 # This is an over-simplified version of AC_USE_SYSTEM_EXTENSIONS in Autoconf
 # or gl_USE_SYSTEM_EXTENSIONS in gnulib.
-#
-# NOTE: This is a macro because the changes to CMAKE_REQUIRED_DEFINITIONS
-# must be visible in the calling scope.
-macro(tuklib_use_system_extensions)
-    if(NOT MSVC)
-        add_compile_definitions(
-            _GNU_SOURCE        # glibc, musl, mingw-w64
-            _NETBSD_SOURCE     # NetBSD, MINIX 3
-            _OPENBSD_SOURCE    # Also NetBSD!
-            __EXTENSIONS__     # Solaris
-            _POSIX_PTHREAD_SEMANTICS # Solaris
-            _DARWIN_C_SOURCE   # macOS
-            _TANDEM_SOURCE     # HP NonStop
-            _ALL_SOURCE        # AIX, z/OS
+macro(tuklib_use_system_extensions TARGET_OR_ALL)
+    if(NOT WIN32)
+        # FIXME? The Solaris-specific __EXTENSIONS__ should be conditional
+        #        even on Solaris. See gnulib: git log m4/extensions.m4.
+        # FIXME? gnulib and autoconf.git has lots of new stuff.
+        tuklib_add_definitions("${TARGET_OR_ALL}"
+            _GNU_SOURCE
+            __EXTENSIONS__
+            _POSIX_PTHREAD_SEMANTICS
+            _TANDEM_SOURCE
+            _ALL_SOURCE
         )
 
         list(APPEND CMAKE_REQUIRED_DEFINITIONS
             -D_GNU_SOURCE
-            -D_NETBSD_SOURCE
-            -D_OPENBSD_SOURCE
             -D__EXTENSIONS__
             -D_POSIX_PTHREAD_SEMANTICS
-            -D_DARWIN_C_SOURCE
             -D_TANDEM_SOURCE
             -D_ALL_SOURCE
         )

cmake/tuklib_cpucores.cmake

@@ -1,15 +1,13 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_cpucores.cmake - see tuklib_cpucores.m4 for description and comments
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
-include(CMakePushCheckState)
 include(CheckCSourceCompiles)
 include(CheckIncludeFile)
 
@@ -77,7 +75,6 @@ function(tuklib_cpucores_internal_check)
     #
     # We test sysctl() first and intentionally break the sysctl() test on QNX
     # so that sysctl() is never used on QNX.
-    cmake_push_check_state()
     check_include_file(sys/param.h HAVE_SYS_PARAM_H)
     if(HAVE_SYS_PARAM_H)
         list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_PARAM_H)
@@ -105,7 +102,6 @@ function(tuklib_cpucores_internal_check)
             }
         "
         TUKLIB_CPUCORES_SYSCTL)
-    cmake_pop_check_state()
     if(TUKLIB_CPUCORES_SYSCTL)
         if(HAVE_SYS_PARAM_H)
             set(TUKLIB_CPUCORES_DEFINITIONS

cmake/tuklib_integer.cmake

@@ -1,12 +1,11 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_integer.cmake - see tuklib_integer.m4 for description and comments
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
 include(TestBigEndian)
@@ -14,69 +13,6 @@ include(CheckCSourceCompiles)
 include(CheckIncludeFile)
 include(CheckSymbolExists)
 
-# An internal helper for tuklib_integer that attempts to detect if
-# -mstrict-align or -mno-strict-align is in effect. This sets the
-# cache variable TUKLIB_INTEGER_STRICT_ALIGN to ON if OBJDUMP_REGEX
-# matches the objdump output of a check program. Otherwise it is set to OFF.
-function(tuklib_integer_internal_strict_align OBJDUMP_REGEX)
-    if(NOT DEFINED TUKLIB_INTEGER_STRICT_ALIGN)
-        # Build a static library because then the function won't be optimized
-        # away, and there won't be any unrelated startup code either.
-        set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
-
-        # CMake >= 3.25 wouldn't require us to create a temporary file,
-        # but the following method is compatible with 3.20.
-        file(WRITE "${CMAKE_BINARY_DIR}/tuklib_integer_strict_align.c" "
-                #include <string.h>
-                unsigned int check_strict_align(const void *p)
-                {
-                    unsigned int i;
-                    memcpy(&i, p, sizeof(i));
-                    return i;
-                }
-            ")
-
-        # Force -O2 because memcpy() won't be optimized out if optimizations
-        # are disabled.
-        try_compile(
-            TRY_COMPILE_RESULT
-            "${CMAKE_BINARY_DIR}"
-            "${CMAKE_BINARY_DIR}/tuklib_integer_strict_align.c"
-            COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}"
-            CMAKE_FLAGS "-DCOMPILE_DEFINITIONS=${CMAKE_REQUIRED_FLAGS} -O2"
-            COPY_FILE "${CMAKE_BINARY_DIR}/tuklib_integer_strict_align.a"
-        )
-
-        if(NOT TRY_COMPILE_RESULT)
-            message(FATAL_ERROR
-                    "Compilation of the strict align check failed. "
-                    "Either the specified compiler flags are broken "
-                    "or ${CMAKE_CURRENT_FUNCTION_LIST_FILE} has a bug.")
-        endif()
-
-        # Use WORKING_DIRECTORY instead of passing the full path to objdump.
-        # This ensures that the pathname won't affect the objdump output,
-        # which could result in an unwanted regex match in the next step.
-        execute_process(
-            COMMAND "${CMAKE_OBJDUMP}" -d "tuklib_integer_strict_align.a"
-            WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
-            OUTPUT_VARIABLE OBJDUMP_OUTPUT
-            RESULT_VARIABLE OBJDUMP_RESULT
-        )
-
-        # FIXME? Should we remove the temporary files here?
-
-        # Look for instructions that load unsigned bytes. If none are found,
-        # assume that -mno-strict-align is in effect.
-        if(OBJDUMP_RESULT STREQUAL "0" AND
-                OBJDUMP_OUTPUT MATCHES "${OBJDUMP_REGEX}")
-            set(TUKLIB_INTEGER_STRICT_ALIGN ON CACHE INTERNAL "")
-        else()
-            set(TUKLIB_INTEGER_STRICT_ALIGN OFF CACHE INTERNAL "")
-        endif()
-    endif()
-endfunction()
-
 function(tuklib_integer TARGET_OR_ALL)
     # Check for endianness. Unlike the Autoconf's AC_C_BIGENDIAN, this doesn't
     # support Apple universal binaries. The CMake module will leave the
@@ -123,148 +59,25 @@ function(tuklib_integer TARGET_OR_ALL)
         endif()
     endif()
 
-    # Autodetect if unaligned memory access is fast when the cache variable
-    # TUKLIB_FAST_UNALIGNED_ACCESS isn't set. The result is stored in
-    # FAST_UNALIGNED_GUESS. Assume that unaligned access shouldn't be used.
-    # Initialize the variable here so that it's never undefined in the
-    # option() command after the if()...endif() block.
+    # Unaligned access is fast on x86(-64), big endian PowerPC, and usually on
+    # 32/64-bit ARM too. There are others too and ARM could be a false match.
+    #
+    # Guess the default value for the option.
+    # CMake's ability to give info about the target arch seems bad.
+    # The the same arch can have different name depending on the OS.
+    #
+    # FIXME: The regex is based on guessing, not on factual information!
+    #
+    # NOTE: Compared to the Autoconf test, this lacks the GCC/Clang test
+    #       on ARM and always assumes that unaligned is fast on ARM.
     set(FAST_UNALIGNED_GUESS OFF)
-    if(NOT DEFINED TUKLIB_FAST_UNALIGNED_ACCESS)
-        message(CHECK_START "Check if unaligned memory access should be used")
-
-        # Guess that unaligned access is fast on these archs:
-        #   - 32/64-bit x86 / x86-64
-        #   - 32/64-bit big endian PowerPC
-        #   - 64-bit little endian PowerPC
-        #   - 32/64-bit Loongarch (*)
-        #   - Some 32-bit ARM
-        #   - Some 64-bit ARM64 (AArch64)
-        #   - Some 32/64-bit RISC-V
-        #
-        # (*) See sections 7.4, 8.1, and 8.2:
-        #     https://github.com/loongson/la-softdev-convention/blob/v0.2/la-softdev-convention.adoc
-        #
-        #     That is, desktop and server processors likely support
-        #     unaligned access in hardware but embedded processors
-        #     might not. GCC defaults to -mno-strict-align and so
-        #     do majority of GNU/Linux distributions. As of
-        #     GCC 15.2, there is no predefined macro to detect
-        #     if -mstrict-align or -mno-strict-align is in effect.
-        #     We use heuristics based on compiler output.
-        #
-        # CMake < 4.1 doesn't provide a standardized/normalized list of arch
-        # names. For example, x86-64 may be "x86_64" (Linux),
-        # "AMD64" (Windows), or even "EM64T" (64-bit WinXP).
-        string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" PROCESSOR)
-
-        # CMake 4.1 made CMAKE_<LANG>_COMPILER_ARCHITECTURE_ID useful on many
-        # targets. In earlier versions it's still useful with MSVC with which
-        # CMAKE_SYSTEM_PROCESSOR can refer to the build machine.
-        if(NOT CMAKE_C_COMPILER_ARCHITECTURE_ID STREQUAL "")
-            # CMake 4.2.0 docs say that the list typically has only one entry
-            # except possibly on macOS. On macOS, most (all?) archs support
-            # unaligned access. Just pick the first one from the list.
-            list(GET CMAKE_C_COMPILER_ARCHITECTURE_ID 0 PROCESSOR)
-            string(TOLOWER "${PROCESSOR}" PROCESSOR)
-        endif()
-
-        # There is no ^ in the first regex branch to allow "i" at
-        # the beginning so it can match "i386" to "i786", and "x86_64".
-        if(PROCESSOR MATCHES "[x34567]86|^x64|^amd64|^em64t")
-            set(FAST_UNALIGNED_GUESS ON)
-
-        elseif(PROCESSOR MATCHES "^powerpc|^ppc")
-            if(WORDS_BIGENDIAN OR PROCESSOR MATCHES "64")
-                set(FAST_UNALIGNED_GUESS ON)
-            endif()
-
-        elseif(PROCESSOR MATCHES "^arm|^riscv" AND
-                NOT PROCESSOR MATCHES "^arm64")
-            # On 32-bit ARM, GCC and Clang # #define __ARM_FEATURE_UNALIGNED
-            # if and only if unaligned access is supported.
-            #
-            # RISC-V C API Specification says that if
-            # __riscv_misaligned_fast is defined then
-            # unaligned access is known to be fast.
-            #
-            # MSVC is handled as a special case: We assume that
-            # 32-bit ARM supports fast unaligned access.
-            # If MSVC gets RISC-V support then this will assume
-            # fast unaligned access on RISC-V too.
-            check_c_source_compiles("
-                    #if !defined(__ARM_FEATURE_UNALIGNED) \
-                            && !defined(__riscv_misaligned_fast) \
-                            && !defined(_MSC_VER)
-                    compile error
-                    #endif
-                    int main(void) { return 0; }
-                "
-                TUKLIB_FAST_UNALIGNED_DEFINED_BY_PREPROCESSOR)
-            if(TUKLIB_FAST_UNALIGNED_DEFINED_BY_PREPROCESSOR)
-                set(FAST_UNALIGNED_GUESS ON)
-            endif()
-
-        elseif(PROCESSOR MATCHES "^aarch64|^arm64")
-            # On ARM64, Clang defines __ARM_FEATURE_UNALIGNED if and only if
-            # unaligned access is supported. However, GCC (at least up to 15.2.0)
-            # defines it even when using -mstrict-align, so autodetection with
-            # this macro doesn't work with GCC on ARM64. (It does work on
-            # 32-bit ARM.) See:
-            #
-            #     https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111555
-            #
-            # We need three checks:
-            #
-            # 1. If __ARM_FEATURE_UNALIGNED is defined and the
-            #    compiler isn't GCC, unaligned access is enabled.
-            #    If the compiler is MSVC, unaligned access is
-            #    enabled even without __ARM_FEATURE_UNALIGNED.
-            check_c_source_compiles("
-                    #if defined(__ARM_FEATURE_UNALIGNED) \
-                            && (!defined(__GNUC__) || defined(__clang__))
-                    #elif defined(_MSC_VER)
-                    #else
-                    compile error
-                    #endif
-                    int main(void) { return 0; }
-                "
-                TUKLIB_FAST_UNALIGNED_DEFINED_BY_PREPROCESSOR)
-            if(TUKLIB_FAST_UNALIGNED_DEFINED_BY_PREPROCESSOR)
-                set(FAST_UNALIGNED_GUESS ON)
-            else()
-                # 2. If __ARM_FEATURE_UNALIGNED is not defined,
-                #    unaligned access is disabled.
-                check_c_source_compiles("
-                        #ifdef __ARM_FEATURE_UNALIGNED
-                        compile error
-                        #endif
-                        int main(void) { return 0; }
-                    "
-                    TUKLIB_FAST_UNALIGNED_NOT_DEFINED_BY_PREPROCESSOR)
-                if(NOT TUKLIB_FAST_UNALIGNED_NOT_DEFINED_BY_PREPROCESSOR)
-                    # 3. Use heuristics to detect if -mstrict-align is
-                    #    in effect when building with GCC.
-                    tuklib_integer_internal_strict_align("[ \t]ldrb[ \t]")
-                    if(NOT TUKLIB_INTEGER_STRICT_ALIGN)
-                        set(FAST_UNALIGNED_GUESS ON)
-                    endif()
-                endif()
-            endif()
-
-        elseif(PROCESSOR MATCHES "^loongarch")
-            tuklib_integer_internal_strict_align("[ \t]ld\\.bu[ \t]")
-            if(NOT TUKLIB_INTEGER_STRICT_ALIGN)
-                set(FAST_UNALIGNED_GUESS ON)
-            endif()
-        endif()
-
-        if(FAST_UNALIGNED_GUESS)
-            message(CHECK_PASS "yes")
-        else()
-            message(CHECK_PASS "no")
+    if(CMAKE_SYSTEM_PROCESSOR MATCHES
+       "[Xx3456]86|^[Xx]64|^[Aa][Mm][Dd]64|^[Aa][Rr][Mm]|^aarch|^powerpc|^ppc")
+        if(NOT WORDS_BIGENDIAN OR
+           NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^powerpc|^ppc")
+           set(FAST_UNALIGNED_GUESS ON)
         endif()
     endif()
-
     option(TUKLIB_FAST_UNALIGNED_ACCESS
            "Enable if the system supports *fast* unaligned memory access \
 with 16-bit, 32-bit, and 64-bit integers."

cmake/tuklib_large_file_support.cmake

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_large_file_support.cmake
 #
@@ -11,10 +8,11 @@
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
-include(CMakePushCheckState)
 include(CheckCSourceCompiles)
 
 function(tuklib_large_file_support TARGET_OR_ALL)

cmake/tuklib_mbstr.cmake

@@ -1,12 +1,11 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_mbstr.cmake - see tuklib_mbstr.m4 for description and comments
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
 include(CheckSymbolExists)
@@ -18,8 +17,4 @@ function(tuklib_mbstr TARGET_OR_ALL)
     # NOTE: wcwidth() requires _GNU_SOURCE or _XOPEN_SOURCE on GNU/Linux.
     check_symbol_exists(wcwidth wchar.h HAVE_WCWIDTH)
     tuklib_add_definition_if("${TARGET_OR_ALL}" HAVE_WCWIDTH)
-
-    # NOTE: vasprintf() requires _GNU_SOURCE on GNU/Linux.
-    check_symbol_exists(vasprintf stdio.h HAVE_VASPRINTF)
-    tuklib_add_definition_if("${TARGET_OR_ALL}" HAVE_VASPRINTF)
 endfunction()

cmake/tuklib_physmem.cmake

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_physmem.cmake - see tuklib_physmem.m4 for description and comments
 #
@@ -9,10 +6,11 @@
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
-include(CMakePushCheckState)
 include(CheckCSourceCompiles)
 include(CheckIncludeFile)
 
@@ -77,11 +75,11 @@ function(tuklib_physmem_internal_check)
     endif()
 
     # sysctl()
-    cmake_push_check_state()
     check_include_file(sys/param.h HAVE_SYS_PARAM_H)
     if(HAVE_SYS_PARAM_H)
         list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_PARAM_H)
     endif()
+
     check_c_source_compiles("
             #ifdef HAVE_SYS_PARAM_H
             #   include <sys/param.h>
@@ -97,7 +95,6 @@ function(tuklib_physmem_internal_check)
             }
         "
         TUKLIB_PHYSMEM_SYSCTL)
-    cmake_pop_check_state()
     if(TUKLIB_PHYSMEM_SYSCTL)
         if(HAVE_SYS_PARAM_H)
             set(TUKLIB_PHYSMEM_DEFINITIONS

cmake/tuklib_progname.cmake

@@ -1,12 +1,11 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # tuklib_progname.cmake - see tuklib_progname.m4 for description and comments
 #
 # Author: Lasse Collin
 #
-#############################################################################
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 include("${CMAKE_CURRENT_LIST_DIR}/tuklib_common.cmake")
 include(CheckSymbolExists)

configure.ac

@@ -1,12 +1,13 @@
 #                                               -*- Autoconf -*-
-# SPDX-License-Identifier: 0BSD
+# Process this file with autoconf to produce a configure script.
 
 ###############################################################################
 #
-# Process this file with autoconf to produce a configure script.
-#
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 ###############################################################################
 
 # NOTE: Don't add useless checks. autoscan detects this and that, but don't
@@ -78,8 +79,8 @@ fi
 # Filters #
 ###########
 
-m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,arm64,sparc,riscv])dnl
-m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,arm64,sparc,riscv])
+m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,arm64,sparc])dnl
+m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,arm64,sparc])
 m4_define([LZ_FILTERS], [lzma1,lzma2])
 
 m4_foreach([NAME], [SUPPORTED_FILTERS],
@@ -309,7 +310,7 @@ case $enable_microlzma in
 		;;
 	*)
 		AC_MSG_RESULT([])
-		AC_MSG_ERROR([--enable-microlzma accepts only 'yes' or 'no'.])
+		AC_MSG_ERROR([--enable-microlzma accepts only `yes' or `no'.])
 		;;
 esac
 AM_CONDITIONAL(COND_MICROLZMA, test "x$enable_microlzma" = xyes)
@@ -358,17 +359,12 @@ if test "x$enable_assembler" = xyes; then
 	esac
 fi
 case $enable_assembler in
-	x86)
-		AC_DEFINE([HAVE_CRC_X86_ASM], [1], [Define to 1 if
-			the 32-bit x86 CRC assembly files are used.])
-		AC_MSG_RESULT([x86])
-		;;
-	no)
-		AC_MSG_RESULT([no])
+	x86 | no)
+		AC_MSG_RESULT([$enable_assembler])
 		;;
 	*)
 		AC_MSG_RESULT([])
-		AC_MSG_ERROR([--enable-assembler accepts only 'yes', 'no', or 'x86' (32-bit).])
+		AC_MSG_ERROR([--enable-assembler accepts only `yes', `no', or `x86' (32-bit).])
 		;;
 esac
 AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
@@ -384,26 +380,6 @@ AC_ARG_ENABLE([clmul-crc], AS_HELP_STRING([--disable-clmul-crc],
 	[], [enable_clmul_crc=yes])
 
 
-############################
-# ARM64 CRC32 Instructions #
-############################
-
-AC_ARG_ENABLE([arm64-crc32], AS_HELP_STRING([--disable-arm64-crc32],
-		[Do not use ARM64 CRC32 instructions even if support for it
-		is detected.]),
-	[], [enable_arm64_crc32=yes])
-
-
-################################
-# LoongArch CRC32 instructions #
-################################
-
-AC_ARG_ENABLE([loongarch-crc32], AS_HELP_STRING([--disable-loongarch-crc32],
-		[Do not use LoongArch CRC32 instructions even if support for
-		them is detected.]),
-	[], [enable_loongarch_crc32=yes])
-
-
 #####################
 # Size optimization #
 #####################
@@ -417,7 +393,7 @@ if test "x$enable_small" = xyes; then
 	AC_DEFINE([HAVE_SMALL], [1], [Define to 1 if optimizing for size.])
 elif test "x$enable_small" != xno; then
 	AC_MSG_RESULT([])
-	AC_MSG_ERROR([--enable-small accepts only 'yes' or 'no'])
+	AC_MSG_ERROR([--enable-small accepts only `yes' or `no'])
 fi
 AC_MSG_RESULT([$enable_small])
 AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
@@ -429,8 +405,8 @@ AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
 
 AC_MSG_CHECKING([if threading support is wanted])
 AC_ARG_ENABLE([threads], AS_HELP_STRING([--enable-threads=METHOD],
-		[Supported METHODS are 'yes', 'no', 'posix', 'win95', and
-		'vista'. The default is 'yes'. Using 'no' together with
+		[Supported METHODS are `yes', `no', `posix', `win95', and
+		`vista'. The default is `yes'. Using `no' together with
 		--enable-small makes liblzma thread unsafe.]),
 	[], [enable_threads=yes])
 
@@ -457,7 +433,7 @@ case $enable_threads in
 		;;
 	*)
 		AC_MSG_RESULT([])
-		AC_MSG_ERROR([--enable-threads only accepts 'yes', 'no', 'posix', 'win95', or 'vista'])
+		AC_MSG_ERROR([--enable-threads only accepts `yes', `no', `posix', `win95', or `vista'])
 		;;
 esac
 
@@ -531,18 +507,10 @@ AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != xno])
 
 AC_ARG_ENABLE([doc], [AS_HELP_STRING([--disable-doc],
 		[do not install documentation files to docdir
-		(man pages are still installed and,
-		if --enable-doxygen is used,
-		liblzma API documentation is installed too)])],
+		(man pages will still be installed)])],
 	[], [enable_doc=yes])
 AM_CONDITIONAL([COND_DOC], [test x$enable_doc != xno])
 
-AC_ARG_ENABLE([doxygen], [AS_HELP_STRING([--enable-doxygen],
-		[generate HTML version of the liblzma API documentation
-		using Doxygen and install the result to docdir])],
-	[], [enable_doxygen=no])
-AM_CONDITIONAL([COND_DOXYGEN], [test x$enable_doxygen != xno])
-
 
 ##############
 # Sandboxing #
@@ -551,24 +519,20 @@ AM_CONDITIONAL([COND_DOXYGEN], [test x$enable_doxygen != xno])
 AC_MSG_CHECKING([if sandboxing should be used])
 AC_ARG_ENABLE([sandbox], [AS_HELP_STRING([--enable-sandbox=METHOD],
 		[Sandboxing METHOD can be
-		'auto', 'no', 'capsicum', 'pledge', or 'landlock'.
-		The default is 'auto' which enables sandboxing if
+		`auto', `no', `capsicum', or `pledge'.
+		The default is `auto' which enables sandboxing if
 		a supported sandboxing method is found.])],
 	[], [enable_sandbox=auto])
-case $enable_xzdec-$enable_xz-$enable_sandbox in
-	no-no-*)
-		enable_sandbox=no
-		AC_MSG_RESULT([no, --disable-xz and --disable-xzdec was used])
-		;;
-	*-*-auto)
+case $enable_sandbox in
+	auto)
 		AC_MSG_RESULT([maybe (autodetect)])
 		;;
-	*-*-no | *-*-capsicum | *-*-pledge | *-*-landlock)
+	no | capsicum | pledge)
 		AC_MSG_RESULT([$enable_sandbox])
 		;;
 	*)
 		AC_MSG_RESULT([])
-		AC_MSG_ERROR([--enable-sandbox only accepts 'auto', 'no', 'capsicum', 'pledge', or 'landlock'.])
+		AC_MSG_ERROR([--enable-sandbox only accepts `auto', `no', `capsicum', or `pledge'.])
 		;;
 esac
 
@@ -642,38 +606,12 @@ AM_PROG_CC_C_O
 AM_PROG_AS
 AC_USE_SYSTEM_EXTENSIONS
 
-# If using GCC or compatible compiler, verify that CFLAGS doesn't contain
-# something that makes -Werror unhappy. It's important to check this after
-# the above check for system extensions. It adds macros that can trigger,
-# for example, -Wunused-macros.
-if test "$GCC" = yes && test "x$SKIP_WERROR_CHECK" != xyes ; then
-	AC_MSG_CHECKING([if the -Werror option is usable])
-	OLD_CFLAGS=$CFLAGS
-	CFLAGS="$CFLAGS -Werror"
-	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[extern int foo; int foo;]])], [
-		AC_MSG_RESULT([yes])
-	], [
-		AC_MSG_RESULT([no])
-		AC_MSG_ERROR([
-    CFLAGS contains something that makes -Werror complain (see config.log).
-    This would break certain checks in 'configure'. It is strongly
-    recommended to modify CFLAGS to fix this. If you want to use noisy
-    warning options, for example, -Weverything, it is still possible to
-    add them later when running 'make': make CFLAGS+=-Weverything
-
-    In case you really want to continue with the current CFLAGS, pass
-    'SKIP_WERROR_CHECK=yes' as an argument to 'configure'.
-		])
-	])
-	CFLAGS=$OLD_CFLAGS
-fi
-
 AS_CASE([$enable_threads],
 	[posix], [
 		echo
 		echo "POSIX threading support:"
 		AX_PTHREAD([:]) dnl We don't need the HAVE_PTHREAD macro.
-		LIBS="$PTHREAD_LIBS $LIBS"
+		LIBS="$LIBS $PTHREAD_LIBS"
 		AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
 
 		dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX,
@@ -684,10 +622,21 @@ AS_CASE([$enable_threads],
 		AC_DEFINE([MYTHREAD_POSIX], [1],
 			[Define to 1 when using POSIX threads (pthreads).])
 
-		# This is nice to have but not mandatory.
+		# These are nice to have but not mandatory.
+		#
+		# FIXME: xz uses clock_gettime if it is available and can do
+		# it even when threading is disabled. Moving this outside
+		# of pthread detection may be undesirable because then
+		# liblzma may get linked against librt even when librt isn't
+		# needed by liblzma.
 		OLD_CFLAGS=$CFLAGS
 		CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-		AC_CHECK_FUNCS([pthread_condattr_setclock])
+		AC_SEARCH_LIBS([clock_gettime], [rt])
+		AC_CHECK_FUNCS([clock_gettime pthread_condattr_setclock])
+		AC_CHECK_DECL([CLOCK_MONOTONIC], [AC_DEFINE(
+			[HAVE_CLOCK_MONOTONIC], [1], [Define to 1 if
+			`CLOCK_MONOTONIC' is declared in <time.h>.])], [],
+			[[#include <time.h>]])
 		CFLAGS=$OLD_CFLAGS
 	],
 	[win95], [
@@ -758,108 +707,66 @@ fi
 # --with-pic and --without-pic though. As long as neither --with-pic nor
 # --without-pic is used then we can use #ifdef PIC to detect if the file is
 # being built for a shared library.
-LINKER_FLAG_UNDEFINED_VERSION=
-AS_IF([test "x$enable_symbol_versions" = xno], [
+if test "x$enable_symbol_versions" = xno ; then
 	enable_symbol_versions=no
 	AC_MSG_RESULT([no])
-], [test "x$enable_shared" = xno], [
+elif test "x$enable_shared" = xno ; then
 	enable_symbol_versions=no
 	AC_MSG_RESULT([no (not building a shared library)])
-], [
-	# "yes" means that symbol version are to be used but we need to
-	# autodetect which variant to use.
-	if test "x$enable_symbol_versions" = xyes ; then
-		case "$host_cpu-$host_os" in
-			microblaze*)
-				# GCC 12 on MicroBlaze doesn't support
-				# __symver__ attribute. It's simplest and
-				# safest to use the generic version on that
-				# platform since then only the linker script
-				# is needed. The RHEL/CentOS 7 compatibility
-				# symbols don't matter on MicroBlaze.
-				enable_symbol_versions=generic
-				;;
-			*-linux*)
-				# NVIDIA HPC Compiler doesn't support symbol
-				# versioning but the linker script can still
-				# be used.
-				AC_EGREP_CPP([use_generic_symbol_versioning],
-					[#ifdef __NVCOMPILER
-					use_generic_symbol_versioning
-					#endif],
-					[enable_symbol_versions=generic],
-					[enable_symbol_versions=linux])
-				;;
-			*)
-				enable_symbol_versions=generic
-				;;
-		esac
-	fi
-
-	if test "x$enable_symbol_versions" = xlinux ; then
-		case "$pic_mode-$enable_static" in
-			default-*)
-				# Use symvers if PIC is defined.
-				have_symbol_versions_linux=2
-				;;
-			*-no)
-				# Not building static library.
-				# Use symvers unconditionally.
-				have_symbol_versions_linux=1
-				;;
-			*)
-				AC_MSG_RESULT([])
-				AC_MSG_ERROR([
+else
+	case "$host_cpu-$host_os" in
+		microblaze*)
+			# GCC 12 on MicroBlaze doesn't support __symver__
+			# attribute. It's simplest and safest to use the
+			# generic version on that platform since then only
+			# the linker script is needed. The RHEL/CentOS 7
+			# compatibility symbols don't matter on MicroBlaze.
+			enable_symbol_versions=generic
+			;;
+		*-linux*)
+			case "$pic_mode-$enable_static" in
+				default-*)
+					# Use symvers if PIC is defined.
+					have_symbol_versions_linux=2
+					;;
+				*-no)
+					# Not building static library.
+					# Use symvers unconditionally.
+					have_symbol_versions_linux=1
+					;;
+				*)
+					AC_MSG_RESULT([])
+					AC_MSG_ERROR([
     On GNU/Linux, building both shared and static library at the same time
     is not supported if --with-pic or --without-pic is used.
     Use either --disable-shared or --disable-static to build one type
     of library at a time. If both types are needed, build one at a time,
     possibly picking only src/liblzma/.libs/liblzma.a from the static build.])
-				;;
-		esac
-		AC_DEFINE_UNQUOTED([HAVE_SYMBOL_VERSIONS_LINUX],
-			[$have_symbol_versions_linux],
-			[Define to 1 to if GNU/Linux-specific details
-			are unconditionally wanted for symbol
-			versioning. Define to 2 to if these are wanted
-			only if also PIC is defined (allows building
-			both shared and static liblzma at the same
-			time with Libtool if neither --with-pic nor
-			--without-pic is used). This define must be
-			used together with liblzma_linux.map.])
-	elif test "x$enable_symbol_versions" != xgeneric ; then
-		AC_MSG_RESULT([])
-		AC_MSG_ERROR([unknown symbol versioning variant '$enable_symbol_versions'])
-	fi
+					;;
+			esac
+			enable_symbol_versions=linux
+			AC_DEFINE_UNQUOTED([HAVE_SYMBOL_VERSIONS_LINUX],
+				[$have_symbol_versions_linux],
+				[Define to 1 to if GNU/Linux-specific details
+				are unconditionally wanted for symbol
+				versioning. Define to 2 to if these are wanted
+				only if also PIC is defined (allows building
+				both shared and static liblzma at the same
+				time with Libtool if neither --with-pic nor
+				--without-pic is used). This define must be
+				used together with liblzma_linux.map.])
+			;;
+		*)
+			enable_symbol_versions=generic
+			;;
+	esac
 	AC_MSG_RESULT([yes ($enable_symbol_versions)])
-
-	# If features are disabled in liblzma, some symbols may be missing.
-	# LLVM's lld defaults to --no-undefined-version and the build breaks
-	# if not all symbols in the version script exist. That is good for
-	# catching errors like typos, but in our case the downside is too big.
-	# Avoid the problem by using --undefined-version if the linker
-	# supports it.
-	#
-	# GNU ld has had --no-undefined-version for a long time but it's not
-	# the default. The opposite option --undefined-version was only added
-	# in 2022, thus we must use --undefined-version conditionally.
-	AC_MSG_CHECKING([if linker supports --undefined-version])
-	OLD_LDFLAGS=$LDFLAGS
-	LDFLAGS="$LDFLAGS -Wl,--undefined-version"
-	AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], [
-		LINKER_FLAG_UNDEFINED_VERSION=-Wl,--undefined-version
-		AC_MSG_RESULT([yes])
-	], [
-		AC_MSG_RESULT([no])
-	])
-	LDFLAGS=$OLD_LDFLAGS
-])
+fi
 
 AM_CONDITIONAL([COND_SYMVERS_LINUX],
 	[test "x$enable_symbol_versions" = xlinux])
 AM_CONDITIONAL([COND_SYMVERS_GENERIC],
 	[test "x$enable_symbol_versions" = xgeneric])
-AC_SUBST([LINKER_FLAG_UNDEFINED_VERSION])
 
 
 ###############################################################################
@@ -875,35 +782,6 @@ AM_GNU_GETTEXT_REQUIRE_VERSION([0.19.6])
 AM_GNU_GETTEXT_VERSION([0.19.6])
 AM_GNU_GETTEXT([external])
 
-# The command line tools use UTF-8 on native Windows. Non-ASCII characters
-# display correctly only when using UCRT and gettext-runtime >= 0.23.1.
-AS_CASE([$USE_NLS-$host_os],
-	[yes-mingw*], [
-		AC_MSG_CHECKING([for UCRT and gettext-runtime >= 0.23.1])
-		AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
-			#define WIN32_LEAN_AND_MEAN
-			#include <windows.h>
-			#include <libintl.h>
-
-			#ifndef _UCRT
-			#error "Not UCRT"
-			#endif
-
-			#if LIBINTL_VERSION < 0x001701
-			#error "gettext-runtime < 0.23.1"
-			#endif
-		]])], [
-			AC_MSG_RESULT([yes])
-		], [
-			AC_MSG_RESULT([no])
-			AC_MSG_ERROR([
-    Translation support (--enable-nls) on native Windows requires
-    UCRT and gettext-runtime >= 0.23.1. Use --disable-nls to build
-    with MSVCRT or old gettext-runtime.])
-		])
-	]
-)
-
 
 ###############################################################################
 # Checks for header files.
@@ -912,6 +790,12 @@ AS_CASE([$USE_NLS-$host_os],
 echo
 echo "System headers and functions:"
 
+# There is currently no workarounds in this package if some of
+# these headers are missing.
+AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
+	[],
+	[AC_MSG_ERROR([Required header file(s) are missing.])])
+
 # immintrin.h allows the use of the intrinsic functions if they are available.
 # cpuid.h may be used for detecting x86 processor features at runtime.
 AC_CHECK_HEADERS([immintrin.h cpuid.h])
@@ -949,6 +833,13 @@ AC_C_BIGENDIAN
 # __attribute__((__constructor__)) can be used for one-time initializations.
 # Use -Werror because some compilers accept unknown attributes and just
 # give a warning.
+#
+# FIXME? Unfortunately -Werror can cause trouble if CFLAGS contains options
+# that produce warnings for unrelated reasons. For example, GCC and Clang
+# support -Wunused-macros which will warn about "#define _GNU_SOURCE 1"
+# which will be among the #defines that Autoconf inserts to the beginning of
+# the test program. There seems to be no nice way to prevent Autoconf from
+# inserting the any defines to the test program.
 AC_MSG_CHECKING([if __attribute__((__constructor__)) can be used])
 have_func_attribute_constructor=no
 OLD_CFLAGS="$CFLAGS"
@@ -967,6 +858,7 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 ])
 CFLAGS="$OLD_CFLAGS"
 
+
 # The Win95 threading lacks a thread-safe one-time initialization function.
 # The one-time initialization is needed for crc32_small.c and crc64_small.c
 # create the CRC tables. So if small mode is enabled, the threading mode is
@@ -981,7 +873,6 @@ if test "x$enable_small$enable_threads$have_func_attribute_constructor" \
     __attribute__((__constructor__))])
 fi
 
-
 ###############################################################################
 # Checks for library functions.
 ###############################################################################
@@ -989,27 +880,11 @@ fi
 # Gnulib replacements as needed
 gl_GETOPT
 
-# If clock_gettime() is available, liblzma with pthreads may use it, and
-# xz may use it even when threading support is disabled. In XZ Utils 5.4.x
-# and older, configure checked for clock_gettime() only when using pthreads.
-# This way non-threaded builds of liblzma didn't get a useless dependency on
-# librt which further had a dependency on libpthread. Avoiding these was
-# useful when a small build was needed, for example, for initramfs use.
-#
-# The above reasoning is thoroughly obsolete: On GNU/Linux, librt hasn't
-# been needed for clock_gettime() since glibc 2.17 (2012-12-25).
-# Solaris 10 needs librt but Solaris 11 doesn't anymore.
-AC_SEARCH_LIBS([clock_gettime], [rt])
-AC_CHECK_FUNCS([clock_gettime])
-AC_CHECK_DECL([CLOCK_MONOTONIC], [AC_DEFINE([HAVE_CLOCK_MONOTONIC], [1],
-	[Define to 1 if 'CLOCK_MONOTONIC' is declared in <time.h>.])], [],
-	[[#include <time.h>]])
-
 # Find the best function to set timestamps.
 AC_CHECK_FUNCS([futimens futimes futimesat utimes _futime utime], [break])
 
-# These are nice to have but not mandatory.
-AC_CHECK_FUNCS([getrlimit posix_fadvise])
+# This is nice to have but not mandatory.
+AC_CHECK_FUNCS([posix_fadvise])
 
 TUKLIB_PROGNAME
 TUKLIB_INTEGER
@@ -1096,15 +971,11 @@ AC_CHECK_DECL([_mm_movemask_epi8],
 #
 # If everything above is supported, runtime detection will be used to keep the
 # binaries working on systems that don't support the required extensions.
-#
-# NOTE: Use a check that links and not merely compiles to ensure that
-# missing intrinsics don't get accepted with compilers that allow
-# implicit function declarations.
 AC_MSG_CHECKING([if _mm_clmulepi64_si128 is usable])
 AS_IF([test "x$enable_clmul_crc" = xno], [
 	AC_MSG_RESULT([no, --disable-clmul-crc was used])
 ], [
-	AC_LINK_IFELSE([AC_LANG_SOURCE([[
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <immintrin.h>
 
 // CLMUL works on older E2K instruction set but it is slow due to emulation.
@@ -1118,162 +989,31 @@ AS_IF([test "x$enable_clmul_crc" = xno], [
 #if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
 __attribute__((__target__("ssse3,sse4.1,pclmul")))
 #endif
-int main(void)
+__m128i my_clmul(__m128i a)
 {
-	__m128i a = _mm_set_epi64x(1, 2);
-	a = _mm_clmulepi64_si128(a, a, 0);
-	return 0;
+	const __m128i b = _mm_set_epi64x(1, 2);
+	return _mm_clmulepi64_si128(a, b, 0);
 }
 	]])], [
 		AC_DEFINE([HAVE_USABLE_CLMUL], [1],
 			[Define to 1 if _mm_set_epi64x and
 			_mm_clmulepi64_si128 are usable.
 			See configure.ac for details.])
-		enable_clmul_crc=yes
+		AC_MSG_RESULT([yes])
 	], [
-		enable_clmul_crc=no
+		AC_MSG_RESULT([no])
 	])
-	AC_MSG_RESULT([$enable_clmul_crc])
 ])
 
-# ARM64 C Language Extensions define CRC32 functions in arm_acle.h.
-# These are supported by at least GCC and Clang which both need
-# __attribute__((__target__("+crc"))), unless the needed compiler flags
-# are used to support the CRC instruction.
-AC_MSG_CHECKING([if ARM64 CRC32 instruction is usable])
-AS_IF([test "x$enable_arm64_crc32" = xno], [
-	AC_MSG_RESULT([no, --disable-arm64-crc32 was used])
-], [
-	AC_LINK_IFELSE([AC_LANG_SOURCE([[
-#include <arm_acle.h>
-#include <stdint.h>
-
-#if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
-__attribute__((__target__("+crc")))
-#endif
-int main(void)
-{
-	return __crc32d(1, 2) != 0;
-}
-	]])], [
-		AC_DEFINE([HAVE_ARM64_CRC32], [1],
-			[Define to 1 if ARM64 CRC32 instruction is supported.
-			See configure.ac for details.])
-		enable_arm64_crc32=yes
-	], [
-		enable_arm64_crc32=no
-	])
-	AC_MSG_RESULT([$enable_arm64_crc32])
-])
-
-# Check for ARM64 CRC32 instruction runtime detection.
-#
-#   - getauxval() is supported on Linux. We also need HWCAP_CRC32 which was
-#     added in glibc 2.24.
-#
-#   - elf_aux_info() is supported on FreeBSD and OpenBSD >= 7.6.
-#
-#   - sysctlbyname("hw.optional.armv8_crc32", ...) is supported on Darwin
-#     (macOS, iOS, etc.). Note that sysctlbyname() is supported on FreeBSD,
-#     NetBSD, and possibly others too but the string is specific to Apple
-#     OSes. The C code is responsible for checking defined(__APPLE__)
-#     before using sysctlbyname("hw.optional.armv8_crc32", ...).
-#
-AS_IF([test "x$enable_arm64_crc32" = xyes], [
-	AC_CHECK_FUNCS([getauxval elf_aux_info sysctlbyname], [break])
-	AC_CHECK_DECL([HWCAP_CRC32], [AC_DEFINE([HAVE_HWCAP_CRC32], [1],
-		[Define to 1 if 'HWCAP_CRC32' is declared in <sys/auxv.h>.])],
-		[], [[#include <sys/auxv.h>]])
-])
-
-
-# LoongArch CRC32 intrinsics are in larchintrin.h.
-# These are supported by at least GCC and Clang.
-#
-# Only 64-bit LoongArch is currently supported.
-# It doesn't need runtime detection.
-AC_MSG_CHECKING([if LoongArch CRC32 instructions are usable])
-AS_IF([test "x$enable_loongarch_crc32" = xno], [
-	AC_MSG_RESULT([no, --disable-loongarch-crc32 was used])
-], [
-	AC_LINK_IFELSE([AC_LANG_SOURCE([[
-#if !(defined(__loongarch__) && __loongarch_grlen >= 64)
-#	error
-#endif
-
-#include <larchintrin.h>
-int main(void)
-{
-	return __crc_w_w_w(1, 2);
-}
-	]])], [
-		AC_DEFINE([HAVE_LOONGARCH_CRC32], [1], [Define to 1 if
-			64-bit LoongArch CRC32 instructions are supported.])
-		enable_loongarch_crc32=yes
-	], [
-		enable_loongarch_crc32=no
-	])
-	AC_MSG_RESULT([$enable_loongarch_crc32])
-])
-
-
 # Check for sandbox support. If one is found, set enable_sandbox=found.
-#
-# About -fsanitize: Of our three sandbox methods, only Landlock is
-# incompatible with -fsanitize. FreeBSD 13.2 with Capsicum was tested with
-# -fsanitize=address,undefined and had no issues. OpenBSD (as of version
-# 7.4) has minimal support for process instrumentation. OpenBSD does not
-# distribute the additional libraries needed (libasan, libubsan, etc.) with
-# GCC or Clang needed for runtime sanitization support and instead only
-# support -fsanitize-minimal-runtime for minimal undefined behavior
-# sanitization. This minimal support is compatible with our use of the
-# Pledge sandbox. So only Landlock will result in a build that cannot
-# compress or decompress a single file to standard out.
 AS_CASE([$enable_sandbox],
 	[auto | capsicum], [
-		AC_CHECK_FUNCS([cap_rights_limit], [enable_sandbox=found])
+		AX_CHECK_CAPSICUM([enable_sandbox=found], [:])
 	]
 )
 AS_CASE([$enable_sandbox],
 	[auto | pledge], [
-		AC_CHECK_FUNCS([pledge], [enable_sandbox=found])
-	]
-)
-AS_CASE([$enable_sandbox],
-	[auto | landlock], [
-		AC_MSG_CHECKING([if Linux Landlock is usable])
-
-		# A compile check is done here because some systems have
-		# linux/landlock.h, but do not have the syscalls defined
-		# in order to actually use Linux Landlock.
-		AC_LINK_IFELSE([AC_LANG_SOURCE([[
-			#include <linux/landlock.h>
-			#include <sys/syscall.h>
-			#include <sys/prctl.h>
-
-			int main(void)
-			{
-				(void)prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
-				(void)SYS_landlock_create_ruleset;
-				(void)SYS_landlock_restrict_self;
-				(void)LANDLOCK_CREATE_RULESET_VERSION;
-				return 0;
-			}
-		]])], [
-			enable_sandbox=found
-
-			AS_CASE(["$CC $CFLAGS"], [*-fsanitize=*],
-				[AC_MSG_ERROR([
-    CC or CFLAGS contain '-fsanitize=' which is incompatible with the Landlock
-    sandboxing. Use --disable-sandbox when using '-fsanitize'.])])
-
-			AC_DEFINE([HAVE_LINUX_LANDLOCK], [1],
-				[Define to 1 if Linux Landlock is supported.
-				See configure.ac for details.])
-			AC_MSG_RESULT([yes])
-		], [
-			AC_MSG_RESULT([no])
-		])
+		AC_CHECK_FUNCS([pledge], [enable_sandbox=found ; break])
 	]
 )
 
@@ -1323,6 +1063,7 @@ AS_IF([test "$GCC" = yes], [
 			-Wall \
 			-Wextra \
 			-Wvla \
+			-Wc99-c11-compat \
 			-Wformat=2 \
 			-Winit-self \
 			-Wmissing-include-dirs \
@@ -1346,8 +1087,6 @@ AS_IF([test "$GCC" = yes], [
 			-Wmissing-prototypes \
 			-Wmissing-declarations \
 			-Wredundant-decls \
-			-Wimplicit-fallthrough \
-			-Wimplicit-fallthrough=5 \
 			\
 			-Wc99-compat \
 			-Wc11-extensions \
@@ -1360,7 +1099,6 @@ AS_IF([test "$GCC" = yes], [
 			-Wdocumentation \
 			-Wduplicate-enum \
 			-Wempty-translation-unit \
-			-Wextra-semi-stmt \
 			-Wflexible-array-extensions \
 			-Wmissing-variable-declarations \
 			-Wnewline-eof \

debug/Makefile.am

@@ -1,5 +1,9 @@
-## SPDX-License-Identifier: 0BSD
+##
 ## Author: Lasse Collin
+##
+## This file has been put into the public domain.
+## You can do whatever you want with this file.
+##
 
 EXTRA_DIST = \
 	translation.bash
@@ -11,8 +15,7 @@ noinst_PROGRAMS = \
 	memusage \
 	crc32 \
 	known_sizes \
-	hex2bin \
-	testfilegen-arm64
+	hex2bin
 
 AM_CPPFLAGS = \
 	-I$(top_srcdir)/src/common \

debug/crc32.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       crc32.c
@@ -7,6 +5,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/full_flush.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       full_flush.c
@@ -7,6 +5,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/hex2bin.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       hex2bin.c
@@ -7,6 +5,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/known_sizes.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       known_sizes.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/memusage.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       memusage.c
@@ -7,6 +5,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/repeat.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       repeat.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/sync_flush.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       sync_flush.c
@@ -7,6 +5,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "sysdefs.h"

debug/testfilegen-arm64.c

@@ -1,116 +0,0 @@
-// SPDX-License-Identifier: 0BSD
-
-///////////////////////////////////////////////////////////////////////////////
-//
-/// \file       testfilegen-arm64.c
-/// \brief      Generates uncompressed test file for the ARM64 filter
-//
-//  Author:     Lasse Collin
-//
-///////////////////////////////////////////////////////////////////////////////
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-
-
-static uint32_t pc4 = 0;
-
-
-static void
-put32le(uint32_t v)
-{
-	putchar((v >> 0) & 0xFF);
-	putchar((v >> 8) & 0xFF);
-	putchar((v >> 16) & 0xFF);
-	putchar((v >> 24) & 0xFF);
-	++pc4;
-}
-
-
-static void
-putbl(uint32_t imm)
-{
-	imm &= (1U << 26) - 1;
-	imm |= 0x25U << 26;
-	put32le(imm);
-}
-
-
-static void
-putadrp32(uint32_t imm)
-{
-	imm &= 0x1FFFFFU;
-
-	// fprintf(stderr, "ADRP 0x%08X\n", imm);
-
-	uint32_t instr = 0x90000000;
-	instr |= (pc4 * 5 + 11) & 0x1F;
-	instr |= (imm & 3) << 29;
-	instr |= (imm >> 2) << 5;
-
-	put32le(instr);
-}
-
-
-extern int
-main(void)
-{
-	putbl(0);
-	putbl(0x03FFFFFF);
-	putbl(0x03FFFFFE);
-	putbl(0x03FFFFFD);
-
-	putbl(3);
-	putbl(2);
-	putbl(1);
-	putbl(0);
-
-
-	putbl(0x02000001);
-	putbl(0x02000000);
-	putbl(0x01FFFFFF);
-	putbl(0x01FFFFFE);
-
-	putbl(0x01111117);
-	putbl(0x01111116);
-	putbl(0x01111115);
-	putbl(0x01111114);
-
-
-	putbl(0x02222227);
-	putbl(0x02222226);
-	putbl(0x02222225);
-	putbl(0x02222224);
-
-	putbl(0U - pc4);
-	putbl(0U - pc4);
-	putbl(0U - pc4);
-	putbl(0U - pc4);
-
-	putadrp32(0x00);
-	putadrp32(0x05);
-	putadrp32(0x15);
-	putadrp32(0x25);
-
-	for (unsigned rep = 0; rep < 2; ++rep) {
-		while ((pc4 << 2) & 4095)
-			put32le(0x55555555U);
-
-		for (unsigned i = 10; i <= 21; ++i) {
-			const uint32_t neg = (0x1FFF00 >> (21 - i)) & ~255U;
-			const uint32_t plus = 1U << (i - 1);
-			putadrp32(0x000000 | plus);
-			putadrp32(0x000005 | plus);
-			putadrp32(0x0000FE | plus);
-			putadrp32(0x0000FF | plus);
-
-			putadrp32(0x000000 | neg);
-			putadrp32(0x000005 | neg);
-			putadrp32(0x0000FE | neg);
-			putadrp32(0x0000FF | neg);
-		}
-	}
-
-	return 0;
-}

debug/translation.bash

@@ -1,5 +1,4 @@
 #!/bin/bash
-# SPDX-License-Identifier: 0BSD
 
 ###############################################################################
 #
@@ -10,8 +9,8 @@
 # cover most of the cases where mistakes can easily happen.
 #
 # Give the path and filename of the xz executable as an argument. If no
-# arguments are given, this script uses src/xz/xz (relative to the current
-# directory).
+# arguments are given, this script uses ../src/xz/xz (relative to the
+# location of this script).
 #
 # You may want to pipe the output of this script to less -S to view the
 # tables printed by xz --list on a 80-column terminal. On the other hand,
@@ -21,6 +20,9 @@
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 ###############################################################################
 
 set -e
@@ -32,6 +34,10 @@ if [ -n "$1" ]; then
 	[ "x${XZ:0:1}" != "x/" ] && XZ="$PWD/$XZ"
 fi
 
+# Locate top_srcdir and go there.
+top_srcdir="$(cd -- "$(dirname -- "$0")" && cd .. && pwd)"
+cd -- "$top_srcdir"
+
 # If XZ wasn't already set, use the default location.
 XZ=${XZ-"$PWD/src/xz/xz"}
 if [ "$(type -t "$XZ" || true)" != "file" ]; then
@@ -41,20 +47,15 @@ if [ "$(type -t "$XZ" || true)" != "file" ]; then
 fi
 XZ=$(type -p -- "$XZ")
 
-# Locate top_srcdir and go there.
-top_srcdir="$(cd -- "$(dirname -- "$0")" && cd .. && pwd)"
-cd -- "$top_srcdir"
-
 # Print the xz version and locale information.
 echo "$XZ --version"
 "$XZ" --version
 echo
 if [ -d .git ] && type git > /dev/null 2>&1; then
 	echo "Source code version in $PWD:"
-	git describe --abbrev=8
+	git describe --abbrev=4
 fi
 echo
-echo "LANGUAGE=$LANGUAGE"
 locale
 echo
 
@@ -79,13 +80,17 @@ for CMD in \
 	"xz --lzma2=foobarbaz=abcd" \
 	"xz --lzma2=mf=abcd" \
 	"xz --lzma2=preset=foobarbaz" \
+	"xz --lzma2=mf=bt4,nice=2" \
 	"xz --lzma2=nice=50000" \
 	"xz --help" \
 	"xz --long-help" \
-	"xz --filters-help" \
 	"xz --list good-*lzma2*" \
-	"xz --list good-1-check* unsupported-check.xz" \
-	"xz --list --verbose --verbose good-1-arm64-lzma2-1.xz good-1-block_header-1.xz good-1-check-sha256.xz good-2-lzma2.xz"
+	"xz --list good-1-check*" \
+	"xz --list --verbose good-*lzma2*" \
+	"xz --list --verbose good-1-check*" \
+	"xz --list --verbose --verbose good-*lzma2*" \
+	"xz --list --verbose --verbose good-1-check*" \
+	"xz --list --verbose --verbose unsupported-check.xz"
 do
 	echo "-----------------------------------------------------------"
 	echo

doc/SHA256SUMS

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doc/examples/01_compress_easy.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       01_compress_easy.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include <stdbool.h>
@@ -26,7 +27,7 @@ show_usage_and_exit(const char *argv0)
 {
 	fprintf(stderr, "Usage: %s PRESET < INFILE > OUTFILE\n"
 			"PRESET is a number 0-9 and can optionally be "
-			"followed by 'e' to indicate extreme preset\n",
+			"followed by `e' to indicate extreme preset\n",
 			argv0);
 	exit(EXIT_FAILURE);
 }

doc/examples/02_decompress.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       02_decompress.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include <stdbool.h>

doc/examples/03_compress_custom.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       03_compress_custom.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include <stdbool.h>
@@ -45,7 +46,7 @@ init_encoder(lzma_stream *strm)
 	}
 
 	// Now we could customize the LZMA2 options if we wanted. For example,
-	// we could set the dictionary size (opt_lzma2.dict_size) to
+	// we could set the the dictionary size (opt_lzma2.dict_size) to
 	// something else than the default (8 MiB) of the default preset.
 	// See lzma/lzma12.h for details of all LZMA2 options.
 	//

doc/examples/04_compress_easy_mt.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       04_compress_easy_mt.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include <stdbool.h>

doc/examples/11_file_info.c

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: 0BSD
-
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       11_file_info.c
@@ -11,6 +9,9 @@
 //
 //  Author:     Lasse Collin
 //
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
 ///////////////////////////////////////////////////////////////////////////////
 
 #include <stdbool.h>
@@ -32,7 +33,7 @@ print_file_size(lzma_stream *strm, FILE *infile, const char *filename)
 	// large files on 32-bit systems (POSIX versions fseeko() and
 	// ftello() can support large files).
 	if (fseek(infile, 0, SEEK_END)) {
-		fprintf(stderr, "Error seeking the file '%s': %s\n",
+		fprintf(stderr, "Error seeking the file `%s': %s\n",
 				filename, strerror(errno));
 		return false;
 	}
@@ -79,7 +80,7 @@ print_file_size(lzma_stream *strm, FILE *infile, const char *filename)
 
 			if (ferror(infile)) {
 				fprintf(stderr,
-					"Error reading from '%s': %s\n",
+					"Error reading from `%s': %s\n",
 					filename, strerror(errno));
 				return false;
 			}
@@ -103,7 +104,7 @@ print_file_size(lzma_stream *strm, FILE *infile, const char *filename)
 			// switch fseeko() or lseek().
 			if (fseek(infile, (long)(strm->seek_pos), SEEK_SET)) {
 				fprintf(stderr, "Error seeking the "
-						"file '%s': %s\n",
+						"file `%s': %s\n",
 						filename, strerror(errno));
 				return false;
 			}
@@ -132,24 +133,24 @@ print_file_size(lzma_stream *strm, FILE *infile, const char *filename)
 
 		case LZMA_FORMAT_ERROR:
 			// .xz magic bytes weren't found.
-			fprintf(stderr, "The file '%s' is not "
+			fprintf(stderr, "The file `%s' is not "
 					"in the .xz format\n", filename);
 			return false;
 
 		case LZMA_OPTIONS_ERROR:
-			fprintf(stderr, "The file '%s' has .xz headers that "
+			fprintf(stderr, "The file `%s' has .xz headers that "
 					"are not supported by this liblzma "
 					"version\n", filename);
 			return false;
 
 		case LZMA_DATA_ERROR:
-			fprintf(stderr, "The file '%s' is corrupt\n",
+			fprintf(stderr, "The file `%s' is corrupt\n",
 					filename);
 			return false;
 
 		case LZMA_MEM_ERROR:
 			fprintf(stderr, "Memory allocation failed when "
-					"decoding the file '%s'\n", filename);
+					"decoding the file `%s'\n", filename);
 			return false;
 
 		// LZMA_MEMLIMIT_ERROR shouldn't happen because we used
@@ -182,7 +183,7 @@ main(int argc, char **argv)
 		FILE *infile = fopen(argv[i], "rb");
 
 		if (infile == NULL) {
-			fprintf(stderr, "Cannot open the file '%s': %s\n",
+			fprintf(stderr, "Cannot open the file `%s': %s\n",
 					argv[i], strerror(errno));
 			success = false;
 		}

doc/examples/Makefile

@@ -1,5 +1,9 @@
-# SPDX-License-Identifier: 0BSD
+#
 # Author: Lasse Collin
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 
 CC = c99
 CFLAGS = -g

doc/examples_old/xz_pipe_comp.c

@@ -0,0 +1,127 @@
+/*
+ * xz_pipe_comp.c
+ * A simple example of pipe-only xz compressor implementation.
+ * version: 2010-07-12 - by Daniel Mealha Cabrita
+ * Not copyrighted -- provided to the public domain.
+ *
+ * Compiling:
+ * Link with liblzma. GCC example:
+ * $ gcc -llzma xz_pipe_comp.c -o xz_pipe_comp
+ *
+ * Usage example:
+ * $ cat some_file | ./xz_pipe_comp > some_file.xz
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <lzma.h>
+
+
+/* COMPRESSION SETTINGS */
+
+/* analogous to xz CLI options: -0 to -9 */
+#define COMPRESSION_LEVEL 6
+
+/* boolean setting, analogous to xz CLI option: -e */
+#define COMPRESSION_EXTREME true
+
+/* see: /usr/include/lzma/check.h LZMA_CHECK_* */
+#define INTEGRITY_CHECK LZMA_CHECK_CRC64
+
+
+/* read/write buffer sizes */
+#define IN_BUF_MAX	4096
+#define OUT_BUF_MAX	4096
+
+/* error codes */
+#define RET_OK			0
+#define RET_ERROR_INIT		1
+#define RET_ERROR_INPUT		2
+#define RET_ERROR_OUTPUT	3
+#define RET_ERROR_COMPRESSION	4
+
+
+/* note: in_file and out_file must be open already */
+int xz_compress (FILE *in_file, FILE *out_file)
+{
+	uint32_t preset = COMPRESSION_LEVEL | (COMPRESSION_EXTREME ? LZMA_PRESET_EXTREME : 0);
+	lzma_check check = INTEGRITY_CHECK;
+	lzma_stream strm = LZMA_STREAM_INIT; /* alloc and init lzma_stream struct */
+	uint8_t in_buf [IN_BUF_MAX];
+	uint8_t out_buf [OUT_BUF_MAX];
+	size_t in_len;	/* length of useful data in in_buf */
+	size_t out_len;	/* length of useful data in out_buf */
+	bool in_finished = false;
+	bool out_finished = false;
+	lzma_action action;
+	lzma_ret ret_xz;
+	int ret;
+
+	ret = RET_OK;
+
+	/* initialize xz encoder */
+	ret_xz = lzma_easy_encoder (&strm, preset, check);
+	if (ret_xz != LZMA_OK) {
+		fprintf (stderr, "lzma_easy_encoder error: %d\n", (int) ret_xz);
+		return RET_ERROR_INIT;
+	}
+
+	while ((! in_finished) && (! out_finished)) {
+		/* read incoming data */
+		in_len = fread (in_buf, 1, IN_BUF_MAX, in_file);
+
+		if (feof (in_file)) {
+			in_finished = true;
+		}
+		if (ferror (in_file)) {
+			in_finished = true;
+			ret = RET_ERROR_INPUT;
+		}
+
+		strm.next_in = in_buf;
+		strm.avail_in = in_len;
+
+		/* if no more data from in_buf, flushes the
+		   internal xz buffers and closes the xz data
+		   with LZMA_FINISH */
+		action = in_finished ? LZMA_FINISH : LZMA_RUN;
+
+		/* loop until there's no pending compressed output */
+		do {
+			/* out_buf is clean at this point */
+			strm.next_out = out_buf;
+			strm.avail_out = OUT_BUF_MAX;
+
+			/* compress data */
+			ret_xz = lzma_code (&strm, action);
+
+			if ((ret_xz != LZMA_OK) && (ret_xz != LZMA_STREAM_END)) {
+				fprintf (stderr, "lzma_code error: %d\n", (int) ret_xz);
+				out_finished = true;
+				ret = RET_ERROR_COMPRESSION;
+			} else {
+				/* write compressed data */
+				out_len = OUT_BUF_MAX - strm.avail_out;
+				fwrite (out_buf, 1, out_len, out_file);
+				if (ferror (out_file)) {
+					out_finished = true;
+					ret = RET_ERROR_OUTPUT;
+				}
+			}
+		} while (strm.avail_out == 0);
+	}
+
+	lzma_end (&strm);
+	return ret;
+}
+
+int main ()
+{
+	int ret;
+
+	ret = xz_compress (stdin, stdout);
+	return ret;
+}
+

doc/examples_old/xz_pipe_decomp.c

@@ -0,0 +1,123 @@
+/*
+ * xz_pipe_decomp.c
+ * A simple example of pipe-only xz decompressor implementation.
+ * version: 2012-06-14 - by Daniel Mealha Cabrita
+ * Not copyrighted -- provided to the public domain.
+ *
+ * Compiling:
+ * Link with liblzma. GCC example:
+ * $ gcc -llzma xz_pipe_decomp.c -o xz_pipe_decomp
+ *
+ * Usage example:
+ * $ cat some_file.xz | ./xz_pipe_decomp > some_file
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <lzma.h>
+
+
+/* read/write buffer sizes */
+#define IN_BUF_MAX	4096
+#define OUT_BUF_MAX	4096
+
+/* error codes */
+#define RET_OK			0
+#define RET_ERROR_INIT		1
+#define RET_ERROR_INPUT		2
+#define RET_ERROR_OUTPUT	3
+#define RET_ERROR_DECOMPRESSION	4
+
+
+/* note: in_file and out_file must be open already */
+int xz_decompress (FILE *in_file, FILE *out_file)
+{
+	lzma_stream strm = LZMA_STREAM_INIT; /* alloc and init lzma_stream struct */
+	const uint32_t flags = LZMA_TELL_UNSUPPORTED_CHECK | LZMA_CONCATENATED;
+	const uint64_t memory_limit = UINT64_MAX; /* no memory limit */
+	uint8_t in_buf [IN_BUF_MAX];
+	uint8_t out_buf [OUT_BUF_MAX];
+	size_t in_len;	/* length of useful data in in_buf */
+	size_t out_len;	/* length of useful data in out_buf */
+	bool in_finished = false;
+	bool out_finished = false;
+	lzma_action action;
+	lzma_ret ret_xz;
+	int ret;
+
+	ret = RET_OK;
+
+	/* initialize xz decoder */
+	ret_xz = lzma_stream_decoder (&strm, memory_limit, flags);
+	if (ret_xz != LZMA_OK) {
+		fprintf (stderr, "lzma_stream_decoder error: %d\n", (int) ret_xz);
+		return RET_ERROR_INIT;
+	}
+
+	while ((! in_finished) && (! out_finished)) {
+		/* read incoming data */
+		in_len = fread (in_buf, 1, IN_BUF_MAX, in_file);
+
+		if (feof (in_file)) {
+			in_finished = true;
+		}
+		if (ferror (in_file)) {
+			in_finished = true;
+			ret = RET_ERROR_INPUT;
+		}
+
+		strm.next_in = in_buf;
+		strm.avail_in = in_len;
+
+		/* if no more data from in_buf, flushes the
+		   internal xz buffers and closes the decompressed data
+		   with LZMA_FINISH */
+		action = in_finished ? LZMA_FINISH : LZMA_RUN;
+
+		/* loop until there's no pending decompressed output */
+		do {
+			/* out_buf is clean at this point */
+			strm.next_out = out_buf;
+			strm.avail_out = OUT_BUF_MAX;
+
+			/* decompress data */
+			ret_xz = lzma_code (&strm, action);
+
+			if ((ret_xz != LZMA_OK) && (ret_xz != LZMA_STREAM_END)) {
+				fprintf (stderr, "lzma_code error: %d\n", (int) ret_xz);
+				out_finished = true;
+				ret = RET_ERROR_DECOMPRESSION;
+			} else {
+				/* write decompressed data */
+				out_len = OUT_BUF_MAX - strm.avail_out;
+				fwrite (out_buf, 1, out_len, out_file);
+				if (ferror (out_file)) {
+					out_finished = true;
+					ret = RET_ERROR_OUTPUT;
+				}
+			}
+		} while (strm.avail_out == 0);
+	}
+
+	/* Bug fix (2012-06-14): If no errors were detected, check
+	   that the last lzma_code() call returned LZMA_STREAM_END.
+	   If not, the file is probably truncated. */
+	if ((ret == RET_OK) && (ret_xz != LZMA_STREAM_END)) {
+		fprintf (stderr, "Input truncated or corrupt\n");
+		ret = RET_ERROR_DECOMPRESSION;
+	}
+
+	lzma_end (&strm);
+	return ret;
+}
+
+int main ()
+{
+	int ret;
+
+	ret = xz_decompress (stdin, stdout);
+	return ret;
+}
+

doc/lzma-file-format.txt

@@ -40,10 +40,10 @@ The .lzma File Format
 
 0.2. Changes
 
-        Last modified: 2024-04-08 17:35+0300
+        Last modified: 2022-07-13 21:00+0300
 
-        From version 2011-04-12 11:55+0300 to 2022-07-13 21:00+0300:
-        The section 1.1.3 was modified to allow End of Payload Marker
+        Compared to the previous version (2011-04-12 11:55+0300)
+        the section 1.1.3 was modified to allow End of Payload Marker
         with a known Uncompressed Size.
 
 
@@ -157,17 +157,17 @@ The .lzma File Format
 2. References
 
         LZMA SDK - The original LZMA implementation
-        https://7-zip.org/sdk.html
+        http://7-zip.org/sdk.html
 
         7-Zip
-        https://7-zip.org/
+        http://7-zip.org/
 
         LZMA Utils - LZMA adapted to POSIX-like systems
-        https://tukaani.org/lzma/
+        http://tukaani.org/lzma/
 
         XZ Utils - The next generation of LZMA Utils
-        https://tukaani.org/xz/
+        http://tukaani.org/xz/
 
         The .xz file format - The successor of the .lzma format
-        https://tukaani.org/xz/xz-file-format.txt
+        http://tukaani.org/xz/xz-file-format.txt
 

doc/xz-file-format.txt

@@ -2,7 +2,7 @@
 The .xz File Format
 ===================
 
-Version 1.2.1 (2024-04-08)
+Version 1.1.0 (2022-12-11)
 
 
         0. Preface
@@ -81,26 +81,18 @@ Version 1.2.1 (2024-04-08)
 0.2. Getting the Latest Version
 
         The latest official version of this document can be downloaded
-        from <https://tukaani.org/xz/xz-file-format.txt>.
+        from <http://tukaani.org/xz/xz-file-format.txt>.
 
         Specific versions of this document have a filename
         xz-file-format-X.Y.Z.txt where X.Y.Z is the version number.
         For example, the version 1.0.0 of this document is available
-        at <https://tukaani.org/xz/xz-file-format-1.0.0.txt>.
+        at <http://tukaani.org/xz/xz-file-format-1.0.0.txt>.
 
 
 0.3. Version History
 
         Version   Date          Description
 
-        1.2.1     2024-04-08    The URLs of this specification and
-                                XZ Utils were changed back to the
-                                original ones in Sections 0.2 and 7.
-
-        1.2.0     2024-01-19    Added RISC-V filter and updated URLs in
-                                Sections 0.2 and 7. The URL of this
-                                specification was changed.
-
         1.1.0     2022-12-11    Added ARM64 filter and clarified 32-bit
                                 ARM endianness in Section 5.3.2,
                                 language improvements in Section 5.4
@@ -931,7 +923,6 @@ Version 1.2.1 (2024-04-08)
               0x08       2 bytes    ARM Thumb filter [1]
               0x09       4 bytes    SPARC filter
               0x0A       4 bytes    ARM64 filter [2]
-              0x0B       2 bytes    RISC-V filter
 
               [1] These are for little endian instruction encoding.
                   This must not be confused with data endianness.
@@ -1145,30 +1136,30 @@ Version 1.2.1 (2024-04-08)
 7. References
 
         LZMA SDK - The original LZMA implementation
-        https://7-zip.org/sdk.html
+        http://7-zip.org/sdk.html
 
         LZMA Utils - LZMA adapted to POSIX-like systems
-        https://tukaani.org/lzma/
+        http://tukaani.org/lzma/
 
         XZ Utils - The next generation of LZMA Utils
-        https://tukaani.org/xz/
+        http://tukaani.org/xz/
 
         [RFC-1952]
         GZIP file format specification version 4.3
-        https://www.ietf.org/rfc/rfc1952.txt
+        http://www.ietf.org/rfc/rfc1952.txt
           - Notation of byte boxes in section "2.1. Overall conventions"
 
         [RFC-2119]
         Key words for use in RFCs to Indicate Requirement Levels
-        https://www.ietf.org/rfc/rfc2119.txt
+        http://www.ietf.org/rfc/rfc2119.txt
 
         [GNU-tar]
-        GNU tar 1.35 manual
-        https://www.gnu.org/software/tar/manual/html_node/Blocking-Factor.html
+        GNU tar 1.21 manual
+        http://www.gnu.org/software/tar/manual/html_node/Blocking-Factor.html
           - Node 9.4.2 "Blocking Factor", paragraph that begins
             "gzip will complain about trailing garbage"
           - Note that this URL points to the latest version of the
             manual, and may some day not contain the note which is in
-            1.35. For the exact version of the manual, download GNU
-            tar 1.35: ftp://ftp.gnu.org/pub/gnu/tar/tar-1.35.tar.gz
+            1.21. For the exact version of the manual, download GNU
+            tar 1.21: ftp://ftp.gnu.org/pub/gnu/tar/tar-1.21.tar.gz
 

dos/Makefile

@@ -1,11 +1,12 @@
-# SPDX-License-Identifier: 0BSD
-
 ###############################################################################
 #
 # Makefile to build XZ Utils using DJGPP
 #
 # Author: Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 ###############################################################################
 
 # For debugging, set comment "#define NDEBUG 1" from config.h to enable
@@ -45,15 +46,13 @@ SRCS_C = \
 	../src/common/tuklib_cpucores.c \
 	../src/common/tuklib_exit.c \
 	../src/common/tuklib_mbstr_fw.c \
-	../src/common/tuklib_mbstr_nonprint.c \
 	../src/common/tuklib_mbstr_width.c \
-	../src/common/tuklib_mbstr_wrap.c \
 	../src/common/tuklib_open_stdxxx.c \
 	../src/common/tuklib_physmem.c \
 	../src/common/tuklib_progname.c \
 	../src/liblzma/check/check.c \
-	../src/liblzma/check/crc32_fast.c \
-	../src/liblzma/check/crc64_fast.c \
+	../src/liblzma/check/crc32_table.c \
+	../src/liblzma/check/crc64_table.c \
 	../src/liblzma/check/sha256.c \
 	../src/liblzma/common/alone_decoder.c \
 	../src/liblzma/common/alone_encoder.c \

dos/config.h

@@ -1,5 +1,3 @@
-/* SPDX-License-Identifier: 0BSD */
-
 /* How many MiB of RAM to assume if the real amount cannot be determined. */
 #define ASSUME_RAM 32
 
@@ -12,9 +10,6 @@
 /* Define to 1 if sha256 integrity check is enabled. */
 #define HAVE_CHECK_SHA256 1
 
-/* Define to 1 if the 32-bit x86 CRC assembly files are used. */
-#define HAVE_CRC_X86_ASM 1
-
 /* Define to 1 if any of HAVE_DECODER_foo have been defined. */
 #define HAVE_DECODERS 1
 
@@ -84,6 +79,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1
 
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
 /* Define to 1 if .lz (lzip) decompression support is enabled. */
 #define HAVE_LZIP_DECODER 1
 
@@ -108,14 +106,23 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #define HAVE_STDINT_H 1
 
-/* Define to 1 if you have the 'utimes' function. */
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the `utimes' function. */
 #define HAVE_UTIMES 1
 
 /* Define to 1 or 0, depending whether the compiler supports simple visibility
    declarations. */
 #define HAVE_VISIBILITY 0
 
-/* Define to 1 if the system has the type '_Bool'. */
+/* Define to 1 if the system has the type `_Bool'. */
 #define HAVE__BOOL 1
 
 /* Define to 1 if the GNU C extension __builtin_assume_aligned is supported.
@@ -138,7 +145,7 @@
 /* Define to the home page for this package. */
 #define PACKAGE_URL "https://tukaani.org/xz/"
 
-/* The size of 'size_t', as computed by sizeof. */
+/* The size of `size_t', as computed by sizeof. */
 #define SIZEOF_SIZE_T 4
 
 /* Define to 1 if the system supports fast unaligned access to 16-bit and

doxygen/update-doxygen

@@ -1,86 +1,53 @@
 #!/bin/sh
-# SPDX-License-Identifier: 0BSD
-
+#
 #############################################################################
 #
-# While it's possible to use the Doxyfile as is to generate liblzma API
-# documentation, it is recommended to use this script because this adds
-# the XZ Utils version number to the generated HTML.
+# Updates the Doxygen generated documentation files in the source tree.
+# If the doxygen command is not installed, it will exit with an error.
+# This script can generate Doxygen documentation for all source files or for
+# just liblzma API header files.
 #
-# Other features:
-#  - Generate documentation of the XZ Utils internals.
-#  - Set input and output paths for out-of-tree builds.
+# It is recommended to use this script to update the Doxygen-generated HTML
+# files since this will include the package version in the output and,
+# in case of liblzma API docs, strip JavaScript files from the output.
 #
 #############################################################################
 #
 # Authors: Jia Tan
 #          Lasse Collin
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 #############################################################################
 
 set -e
 
-show_usage()
-{
-	echo "Usage: $0 <api|internal> [ABS_TOP_SRCDIR ABS_OUTDIR]"
-	echo
-	echo "Supported modes:"
-	echo " - 'api' (default): liblzma API docs into doc/api"
-	echo " - 'internal': internal docs into doc/internal"
-	echo
-	echo "Absolute source and output dirs may be set" \
-		"to do an out-of-tree build."
-	echo "The output directory must already exist."
-	exit 1
-}
-
-case $1 in
-	api|internal)
-		;;
-	*)
-		show_usage
-		;;
-esac
-
 if type doxygen > /dev/null 2>&1; then
 	:
 else
-	echo "$0: 'doxygen' command not found" >&2
+	echo "doxygen/update-doxygen: 'doxygen' command not found." >&2
+	echo "doxygen/update-doxygen: Skipping Doxygen docs generation." >&2
 	exit 1
 fi
 
-case $# in
-	1)
-		# One argument: Building inside the source tree
-		ABS_TOP_SRCDIR=`dirname "$0"`/..
-		ABS_OUTDIR=$ABS_TOP_SRCDIR/doc
-		;;
-	3)
-		# Three arguments: Possibly an out of tree build
-		ABS_TOP_SRCDIR=$2
-		ABS_OUTDIR=$3
-		;;
-	*)
-		show_usage
-		;;
-esac
-
-if test ! -f "$ABS_TOP_SRCDIR/doxygen/Doxyfile"; then
-	echo "$0: Source dir '$ABS_TOP_SRCDIR/doxygen/Doxyfile' not found" >&2
-	exit 1
-fi
-if test ! -d "$ABS_OUTDIR"; then
-	echo "$0: Output dir '$ABS_OUTDIR' not found" >&2
-	exit 1
+if test ! -f Doxyfile; then
+	cd `dirname "$0"` || exit 1
+	if test ! -f Doxyfile; then
+		echo "doxygen/update-doxygen: Cannot find Doxyfile" >&2
+		exit 1
+	fi
 fi
 
 # Get the package version so that it can be included in the generated docs.
-PACKAGE_VERSION=`cd "$ABS_TOP_SRCDIR" && sh build-aux/version.sh`
+PACKAGE_VERSION=`cd .. && sh build-aux/version.sh` || exit 1
 
+# If no arguments are specified, default to generating liblzma API header
+# documentation only.
 case $1 in
-	api)
+	'' | api)
 		# Remove old documentation before re-generating the new.
-		rm -rf "$ABS_OUTDIR/api"
+		rm -rf ../doc/api
 
 		# Generate the HTML documentation by preparing the Doxyfile
 		# in stdin and piping the result to the doxygen command.
@@ -88,27 +55,57 @@ case $1 in
 		# override any earlier assignment. So, we can use this
 		# feature to override the tags that need to change between
 		# "api" and "internal" modes.
-		ABS_SRCDIR=$ABS_TOP_SRCDIR/src/liblzma/api
 		(
-			cat "$ABS_TOP_SRCDIR/doxygen/Doxyfile"
+			cat Doxyfile
 			echo "PROJECT_NUMBER         = $PACKAGE_VERSION"
-			echo "OUTPUT_DIRECTORY       = $ABS_OUTDIR"
-			echo "STRIP_FROM_PATH        = $ABS_SRCDIR"
-			echo "INPUT                  = $ABS_SRCDIR"
-		) | doxygen -q -
+		) | doxygen -
+
+		# As of Doxygen 1.8.0 - 1.9.6 and the Doxyfile options we use,
+		# the output is good without any JavaScript. Unfortunately
+		# Doxygen doesn't have an option to disable JavaScript usage
+		# completely so we strip it away with the hack below.
+		#
+		# Omitting the JavaScript code avoids some license hassle
+		# as jquery.js is fairly big, it contains more than jQuery
+		# itself, and doesn't include the actual license text (it
+		# only refers to the MIT license by name).
+		echo "Stripping JavaScript from Doxygen output..."
+		for F in ../doc/api/*.html
+		do
+			sed 's/<script [^>]*><\/script>//g
+				s/onclick="[^"]*"//g' \
+				"$F" > ../doc/api/tmp
+			mv -f ../doc/api/tmp "$F"
+		done
+		rm -f ../doc/api/*.js
 		;;
 
 	internal)
-		rm -rf "$ABS_OUTDIR/internal"
+		# The docs from internal aren't for distribution so
+		# the JavaScript files aren't an issue here.
+		rm -rf ../doc/internal
 		(
-			cat "$ABS_TOP_SRCDIR/doxygen/Doxyfile"
-			echo 'PROJECT_NAME           = "XZ Utils"'
+			cat Doxyfile
 			echo "PROJECT_NUMBER         = $PACKAGE_VERSION"
-			echo "OUTPUT_DIRECTORY       = $ABS_OUTDIR"
-			echo "STRIP_FROM_PATH        = $ABS_TOP_SRCDIR"
-			echo "INPUT                  = $ABS_TOP_SRCDIR/src"
+			echo 'PROJECT_NAME           = "XZ Utils"'
+			echo 'STRIP_FROM_PATH        = ../src'
+			echo 'INPUT                  = ../src'
 			echo 'HTML_OUTPUT            = internal'
+			echo 'EXTRACT_PRIVATE        = YES'
+			echo 'EXTRACT_STATIC         = YES'
+			echo 'EXTRACT_LOCAL_CLASSES  = YES'
 			echo 'SEARCHENGINE           = YES'
-		) | doxygen -q -
+		) | doxygen -
+		;;
+
+	*)
+		echo "doxygen/update-doxygen: Error: mode argument '$1'" \
+			"is not supported." >&2
+		echo "doxygen/update-doxygen: Supported modes:" >&2
+		echo "doxygen/update-doxygen: - 'api' (default):" \
+			"liblzma API docs into doc/api" >&2
+		echo "doxygen/update-doxygen: - 'internal':"\
+			"internal docs into doc/internal" >&2
+		exit 1
 		;;
 esac

extra/7z2lzma/7z2lzma.bash

@@ -1,6 +1,5 @@
 #!/bin/bash
-# SPDX-License-Identifier: 0BSD
-
+#
 #############################################################################
 #
 # 7z2lzma.bash is very primitive .7z to .lzma converter. The input file must
@@ -18,6 +17,9 @@
 #
 # Author: Lasse Collin <lasse.collin@tukaani.org>
 #
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
 #############################################################################
 
 # You can use 7z or 7za, both will work.

extra/scanlzma/scanlzma.c

@@ -1,5 +1,3 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
 /*
     scanlzma, scan for lzma compressed data in stdin and echo it to stdout.
     Copyright (C) 2006 Timo Lindfors

lib/Makefile.am

@@ -1,5 +1,3 @@
-## SPDX-License-Identifier: GPL-2.0-or-later
-
 ##
 ## Copyright (C) 2004-2007 Free Software Foundation, Inc.
 ##
@@ -23,17 +21,7 @@ libgnu_a_SOURCES =
 libgnu_a_DEPENDENCIES = $(LIBOBJS)
 libgnu_a_LIBADD = $(LIBOBJS)
 
-EXTRA_DIST = \
-	getopt.in.h \
-	getopt.c \
-	getopt1.c \
-	getopt_int.h \
-	getopt-cdefs.h \
-	getopt-core.h \
-	getopt-ext.h \
-	getopt-pfx-core.h \
-	getopt-pfx-ext.h
-
+EXTRA_DIST = getopt.in.h getopt.c getopt1.c getopt_int.h
 BUILT_SOURCES = $(GETOPT_H)
 MOSTLYCLEANFILES = getopt.h getopt.h-t
 

lib/getopt-cdefs.h

@@ -1,72 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-/* getopt-on-non-glibc compatibility macros.
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of gnulib.
-   Unlike most of the getopt implementation, it is NOT shared
-   with the GNU C Library.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-#ifndef _GETOPT_CDEFS_H
-#define _GETOPT_CDEFS_H 1
-
-/* This header should not be used directly; include getopt.h or
-   unistd.h instead.  It does not have a protective #error, because
-   the guard macro for getopt.h in gnulib is not fixed.  */
-
-/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
-   a number of the internal macros supplied to GNU libc's headers by
-   sys/cdefs.h.  Provide fallback definitions for all of them.  */
-#ifdef HAVE_SYS_CDEFS_H
-# include <sys/cdefs.h>
-#endif
-
-#ifndef __BEGIN_DECLS
-# ifdef __cplusplus
-#  define __BEGIN_DECLS extern "C" {
-# else
-#  define __BEGIN_DECLS /* nothing */
-# endif
-#endif
-#ifndef __END_DECLS
-# ifdef __cplusplus
-#  define __END_DECLS }
-# else
-#  define __END_DECLS /* nothing */
-# endif
-#endif
-
-#ifndef __GNUC_PREREQ
-# if defined __GNUC__ && defined __GNUC_VERSION__
-# define __GNUC_PREREQ(maj, min) \
-        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
-# else
-#  define __GNUC_PREREQ(maj, min) 0
-# endif
-#endif
-
-#ifndef __THROW
-# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
-#  if __cplusplus >= 201103L
-#   define __THROW      noexcept (true)
-#  else
-#   define __THROW      throw ()
-#  endif
-# else
-#  define __THROW
-# endif
-#endif
-
-#endif /* _GETOPT_CDEFS_H */

lib/getopt-core.h

@@ -1,98 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-/* Declarations for getopt (basic, portable features only).
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of the GNU C Library and is also part of gnulib.
-   Patches to this file should be submitted to both projects.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#ifndef _GETOPT_CORE_H
-#define _GETOPT_CORE_H 1
-
-/* This header should not be used directly; include getopt.h or
-   unistd.h instead.  Unlike most bits headers, it does not have
-   a protective #error, because the guard macro for getopt.h in
-   gnulib is not fixed.  */
-
-__BEGIN_DECLS
-
-/* For communication from 'getopt' to the caller.
-   When 'getopt' finds an option that takes an argument,
-   the argument value is returned here.
-   Also, when 'ordering' is RETURN_IN_ORDER,
-   each non-option ARGV-element is returned here.  */
-
-extern char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
-   This is used for communication to and from the caller
-   and for communication between successive calls to 'getopt'.
-
-   On entry to 'getopt', zero means this is the first call; initialize.
-
-   When 'getopt' returns -1, this is the index of the first of the
-   non-option elements that the caller should itself scan.
-
-   Otherwise, 'optind' communicates from one call to the next
-   how much of ARGV has been scanned so far.  */
-
-extern int optind;
-
-/* Callers store zero here to inhibit the error message 'getopt' prints
-   for unrecognized options.  */
-
-extern int opterr;
-
-/* Set to an option character which was unrecognized.  */
-
-extern int optopt;
-
-/* Get definitions and prototypes for functions to process the
-   arguments in ARGV (ARGC of them, minus the program name) for
-   options given in OPTS.
-
-   Return the option character from OPTS just read.  Return -1 when
-   there are no more options.  For unrecognized options, or options
-   missing arguments, 'optopt' is set to the option letter, and '?' is
-   returned.
-
-   The OPTS string is a list of characters which are recognized option
-   letters, optionally followed by colons, specifying that that letter
-   takes an argument, to be placed in 'optarg'.
-
-   If a letter in OPTS is followed by two colons, its argument is
-   optional.  This behavior is specific to the GNU 'getopt'.
-
-   The argument '--' causes premature termination of argument
-   scanning, explicitly telling 'getopt' that there are no more
-   options.
-
-   If OPTS begins with '-', then non-option arguments are treated as
-   arguments to the option '\1'.  This behavior is specific to the GNU
-   'getopt'.  If OPTS begins with '+', or POSIXLY_CORRECT is set in
-   the environment, then do not permute arguments.
-
-   For standards compliance, the 'argv' argument has the type
-   char *const *, but this is inaccurate; if argument permutation is
-   enabled, the argv array (not the strings it points to) must be
-   writable.  */
-
-extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-__END_DECLS
-
-#endif /* _GETOPT_CORE_H */

lib/getopt-ext.h

@@ -1,79 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-/* Declarations for getopt (GNU extensions).
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of the GNU C Library and is also part of gnulib.
-   Patches to this file should be submitted to both projects.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#ifndef _GETOPT_EXT_H
-#define _GETOPT_EXT_H 1
-
-/* This header should not be used directly; include getopt.h instead.
-   Unlike most bits headers, it does not have a protective #error,
-   because the guard macro for getopt.h in gnulib is not fixed.  */
-
-__BEGIN_DECLS
-
-/* Describe the long-named options requested by the application.
-   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
-   of 'struct option' terminated by an element containing a name which is
-   zero.
-
-   The field 'has_arg' is:
-   no_argument		(or 0) if the option does not take an argument,
-   required_argument	(or 1) if the option requires an argument,
-   optional_argument 	(or 2) if the option takes an optional argument.
-
-   If the field 'flag' is not NULL, it points to a variable that is set
-   to the value given in the field 'val' when the option is found, but
-   left unchanged if the option is not found.
-
-   To have a long-named option do something other than set an 'int' to
-   a compiled-in constant, such as set a value from 'optarg', set the
-   option's 'flag' field to zero and its 'val' field to a nonzero
-   value (the equivalent single-letter option character, if there is
-   one).  For long options that have a zero 'flag' field, 'getopt'
-   returns the contents of the 'val' field.  */
-
-struct option
-{
-  const char *name;
-  /* has_arg can't be an enum because some compilers complain about
-     type mismatches in all the code that assumes it is an int.  */
-  int has_arg;
-  int *flag;
-  int val;
-};
-
-/* Names for the values of the 'has_arg' field of 'struct option'.  */
-
-#define no_argument		0
-#define required_argument	1
-#define optional_argument	2
-
-extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
-			const char *__shortopts,
-		        const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
-			     const char *__shortopts,
-		             const struct option *__longopts, int *__longind)
-       __THROW _GL_ARG_NONNULL ((2, 3));
-
-__END_DECLS
-
-#endif /* _GETOPT_EXT_H */

lib/getopt-pfx-core.h

@@ -1,68 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-/* getopt (basic, portable features) gnulib wrapper header.
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of gnulib.
-   Unlike most of the getopt implementation, it is NOT shared
-   with the GNU C Library.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-#ifndef _GETOPT_PFX_CORE_H
-#define _GETOPT_PFX_CORE_H 1
-
-/* This header should not be used directly; include getopt.h or
-   unistd.h instead.  It does not have a protective #error, because
-   the guard macro for getopt.h in gnulib is not fixed.  */
-
-/* Standalone applications should #define __GETOPT_PREFIX to an
-   identifier that prefixes the external functions and variables
-   defined in getopt-core.h and getopt-ext.h.  Systematically
-   rename identifiers so that they do not collide with the system
-   functions and variables.  Renaming avoids problems with some
-   compilers and linkers.  */
-#ifdef __GETOPT_PREFIX
-# ifndef __GETOPT_ID
-#  define __GETOPT_CONCAT(x, y) x ## y
-#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
-#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
-# endif
-# undef getopt
-# undef optarg
-# undef opterr
-# undef optind
-# undef optopt
-# define getopt __GETOPT_ID (getopt)
-# define optarg __GETOPT_ID (optarg)
-# define opterr __GETOPT_ID (opterr)
-# define optind __GETOPT_ID (optind)
-# define optopt __GETOPT_ID (optopt)
-
-/* Work around a problem on macOS, which declares getopt with a
-   trailing __DARWIN_ALIAS(getopt) that would expand to something like
-   __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
-   hack to suppress the macOS declaration <https://bugs.gnu.org/40205>.  */
-# ifdef __APPLE__
-#  define _GETOPT
-# endif
-
-/* The system's getopt.h may have already included getopt-core.h to
-   declare the unprefixed identifiers.  Undef _GETOPT_CORE_H so that
-   getopt-core.h declares them with prefixes.  */
-# undef _GETOPT_CORE_H
-#endif
-
-#include <getopt-core.h>
-
-#endif /* _GETOPT_PFX_CORE_H */

lib/getopt-pfx-ext.h

@@ -1,72 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-/* getopt (GNU extensions) gnulib wrapper header.
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of gnulib.
-   Unlike most of the getopt implementation, it is NOT shared
-   with the GNU C Library.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-#ifndef _GETOPT_PFX_EXT_H
-#define _GETOPT_PFX_EXT_H 1
-
-/* This header should not be used directly; include getopt.h instead.
-   It does not have a protective #error, because the guard macro for
-   getopt.h in gnulib is not fixed.  */
-
-/* Standalone applications should #define __GETOPT_PREFIX to an
-   identifier that prefixes the external functions and variables
-   defined in getopt-core.h and getopt-ext.h.  Systematically
-   rename identifiers so that they do not collide with the system
-   functions and variables.  Renaming avoids problems with some
-   compilers and linkers.  */
-#ifdef __GETOPT_PREFIX
-# ifndef __GETOPT_ID
-#  define __GETOPT_CONCAT(x, y) x ## y
-#  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
-#  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
-# endif
-# undef getopt_long
-# undef getopt_long_only
-# undef option
-# undef _getopt_internal
-# define getopt_long __GETOPT_ID (getopt_long)
-# define getopt_long_only __GETOPT_ID (getopt_long_only)
-# define option __GETOPT_ID (option)
-# define _getopt_internal __GETOPT_ID (getopt_internal)
-
-/* The system's getopt.h may have already included getopt-ext.h to
-   declare the unprefixed identifiers.  Undef _GETOPT_EXT_H so that
-   getopt-ext.h declares them with prefixes.  */
-# undef _GETOPT_EXT_H
-#endif
-
-/* Standalone applications get correct prototypes for getopt_long and
-   getopt_long_only; they declare "char **argv".  For backward
-   compatibility with old applications, if __GETOPT_PREFIX is not
-   defined, we supply GNU-libc-compatible, but incorrect, prototypes
-   using "char *const *argv".  (GNU libc is stuck with the incorrect
-   prototypes, as they are baked into older versions of LSB.)  */
-#ifndef __getopt_argv_const
-# if defined __GETOPT_PREFIX
-#  define __getopt_argv_const /* empty */
-# else
-#  define __getopt_argv_const const
-# endif
-#endif
-
-#include <getopt-ext.h>
-
-#endif /* _GETOPT_PFX_EXT_H */

lib/getopt.in.h

@@ -1,28 +1,27 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
 /* Declarations for getopt.
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of gnulib.
-   Unlike most of the getopt implementation, it is NOT shared
-   with the GNU C Library, which supplies a different version of
-   this file.
+   Copyright (C) 1989-1994,1996-1999,2001,2003,2004,2005,2006,2007
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1, or (at your option)
+   any later version.
 
-   This file is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifndef _GETOPT_H
 
-#define _GETOPT_H 1
+#ifndef __need_getopt
+# define _GETOPT_H 1
+#endif
 
 /* Standalone applications should #define __GETOPT_PREFIX to an
    identifier that prefixes the external functions and variables
@@ -32,29 +31,196 @@
    identifiers so that they do not collide with the system functions
    and variables.  Renaming avoids problems with some compilers and
    linkers.  */
-#if defined __GETOPT_PREFIX
+#if defined __GETOPT_PREFIX && !defined __need_getopt
 # include <stdlib.h>
 # include <stdio.h>
-
-# ifndef _MSC_VER
-#  include <unistd.h>
-# endif
+# include <unistd.h>
+# undef __need_getopt
+# undef getopt
+# undef getopt_long
+# undef getopt_long_only
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# define getopt __GETOPT_ID (getopt)
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
 #endif
 
-/* From Gnulib's lib/arg-nonnull.h: */
-/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
-   that the values passed as arguments n, ..., m must be non-NULL pointers.
-   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
-#ifndef _GL_ARG_NONNULL
-# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
-#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+/* Standalone applications get correct prototypes for getopt_long and
+   getopt_long_only; they declare "char **argv".  libc uses prototypes
+   with "char *const *argv" that are incorrect because getopt_long and
+   getopt_long_only can permute argv; this is required for backward
+   compatibility (e.g., for LSB 2.0.1).
+
+   This used to be `#if defined __GETOPT_PREFIX && !defined __need_getopt',
+   but it caused redefinition warnings if both unistd.h and getopt.h were
+   included, since unistd.h includes getopt.h having previously defined
+   __need_getopt.
+
+   The only place where __getopt_argv_const is used is in definitions
+   of getopt_long and getopt_long_only below, but these are visible
+   only if __need_getopt is not defined, so it is quite safe to rewrite
+   the conditional as follows:
+*/
+#if !defined __need_getopt
+# if defined __GETOPT_PREFIX
+#  define __getopt_argv_const /* empty */
 # else
-#  define _GL_ARG_NONNULL(params)
+#  define __getopt_argv_const const
 # endif
 #endif
 
-#include <getopt-cdefs.h>
-#include <getopt-pfx-core.h>
-#include <getopt-pfx-ext.h>
+/* If __GNU_LIBRARY__ is not already defined, either we are being used
+   standalone, or this is the first header included in the source file.
+   If we are being used with glibc, we need to include <features.h>, but
+   that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
+   not defined, include <ctype.h>, which will pull in <features.h> for us
+   if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
+   doesn't flood the namespace with stuff the way some other headers do.)  */
+#if !defined __GNU_LIBRARY__
+# include <ctype.h>
+#endif
 
-#endif /* _GETOPT_H */
+#ifndef __THROW
+# ifndef __GNUC_PREREQ
+#  define __GNUC_PREREQ(maj, min) (0)
+# endif
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW	throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+#ifndef __need_getopt
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+# define no_argument		0
+# define required_argument	1
+# define optional_argument	2
+#endif	/* need getopt */
+
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, `optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in `optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU `getopt'.
+
+   The argument `--' causes premature termination of argument
+   scanning, explicitly telling `getopt' that there are no more
+   options.
+
+   If OPTS begins with `-', then non-option arguments are treated as
+   arguments to the option '\1'.  This behavior is specific to the GNU
+   `getopt'.  If OPTS begins with `+', or POSIXLY_CORRECT is set in
+   the environment, then do not permute arguments.  */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       __THROW;
+
+#ifndef __need_getopt
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+			const char *__shortopts,
+		        const struct option *__longopts, int *__longind)
+       __THROW;
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind)
+       __THROW;
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/* Make sure we later can get all the definitions and declarations.  */
+#undef __need_getopt
+
+#endif /* getopt.h */

lib/getopt1.c

@@ -1,32 +1,41 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987-2023 Free Software Foundation, Inc.
-   This file is part of the GNU C Library and is also part of gnulib.
-   Patches to this file should be submitted to both projects.
+   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006
+     Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1, or (at your option)
+   any later version.
 
-   The GNU C Library is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-#ifndef _LIBC
-# ifdef HAVE_CONFIG_H
-#  include <config.h>
-# endif
+#ifdef _LIBC
+# include <getopt.h>
+#else
+# include <config.h>
+# include "getopt.h"
+#endif
+#include "getopt_int.h"
+
+#include <stdio.h>
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
 #endif
 
-#include "getopt.h"
-#include "getopt_int.h"
+#ifndef	NULL
+#define NULL 0
+#endif
 
 int
 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
@@ -42,7 +51,7 @@ _getopt_long_r (int argc, char **argv, const char *options,
 		struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
-			     0, d, 0);
+			     0, 0, d);
 }
 
 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
@@ -65,14 +74,13 @@ _getopt_long_only_r (int argc, char **argv, const char *options,
 		     struct _getopt_data *d)
 {
   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
-			     1, d, 0);
+			     1, 0, d);
 }
 
 
 #ifdef TEST
 
 #include <stdio.h>
-#include <stdlib.h>
 
 int
 main (int argc, char **argv)
@@ -84,7 +92,7 @@ main (int argc, char **argv)
     {
       int this_option_optind = optind ? optind : 1;
       int option_index = 0;
-      static const struct option long_options[] =
+      static struct option long_options[] =
       {
 	{"add", 1, 0, 0},
 	{"append", 0, 0, 0},
@@ -134,11 +142,11 @@ main (int argc, char **argv)
 	  break;
 
 	case 'c':
-	  printf ("option c with value '%s'\n", optarg);
+	  printf ("option c with value `%s'\n", optarg);
 	  break;
 
 	case 'd':
-	  printf ("option d with value '%s'\n", optarg);
+	  printf ("option d with value `%s'\n", optarg);
 	  break;
 
 	case '?':

lib/getopt_int.h

@@ -1,64 +1,34 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
 /* Internal declarations for getopt.
-   Copyright (C) 1989-2023 Free Software Foundation, Inc.
-   This file is part of the GNU C Library and is also part of gnulib.
-   Patches to this file should be submitted to both projects.
+   Copyright (C) 1989-1994,1996-1999,2001,2003,2004
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
 
-   The GNU C Library is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifndef _GETOPT_INT_H
 #define _GETOPT_INT_H	1
 
-#include <getopt.h>
-
 extern int _getopt_internal (int ___argc, char **___argv,
 			     const char *__shortopts,
-			     const struct option *__longopts, int *__longind,
+		             const struct option *__longopts, int *__longind,
 			     int __long_only, int __posixly_correct);
 
 
 /* Reentrant versions which can handle parsing multiple argument
    vectors at the same time.  */
 
-/* Describe how to deal with options that follow non-option ARGV-elements.
-
-   REQUIRE_ORDER means don't recognize them as options; stop option
-   processing when the first non-option is seen.  This is what POSIX
-   specifies should happen.
-
-   PERMUTE means permute the contents of ARGV as we scan, so that
-   eventually all the non-options are at the end.  This allows options
-   to be given in any order, even with programs that were not written
-   to expect this.
-
-   RETURN_IN_ORDER is an option available to programs that were
-   written to expect options and other ARGV-elements in any order
-   and that care about the ordering of the two.  We describe each
-   non-option ARGV-element as if it were the argument of an option
-   with character code 1.
-
-   The special argument '--' forces an end of option-scanning regardless
-   of the value of 'ordering'.  In the case of RETURN_IN_ORDER, only
-   '--' can cause 'getopt' to return -1 with 'optind' != ARGC.  */
-
-enum __ord
-  {
-    REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
-  };
-
 /* Data type for reentrant functions.  */
 struct _getopt_data
 {
@@ -83,17 +53,58 @@ struct _getopt_data
      by advancing to the next ARGV-element.  */
   char *__nextchar;
 
-  /* See __ord above.  */
-  enum __ord __ordering;
+  /* Describe how to deal with options that follow non-option ARGV-elements.
+
+     If the caller did not specify anything,
+     the default is REQUIRE_ORDER if the environment variable
+     POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+     REQUIRE_ORDER means don't recognize them as options;
+     stop option processing when the first non-option is seen.
+     This is what Unix does.
+     This mode of operation is selected by either setting the environment
+     variable POSIXLY_CORRECT, or using `+' as the first character
+     of the list of option characters, or by calling getopt.
+
+     PERMUTE is the default.  We permute the contents of ARGV as we
+     scan, so that eventually all the non-options are at the end.
+     This allows options to be given in any order, even with programs
+     that were not written to expect this.
+
+     RETURN_IN_ORDER is an option available to programs that were
+     written to expect options and other ARGV-elements in any order
+     and that care about the ordering of the two.  We describe each
+     non-option ARGV-element as if it were the argument of an option
+     with character code 1.  Using `-' as the first character of the
+     list of option characters selects this mode of operation.
+
+     The special argument `--' forces an end of option-scanning regardless
+     of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+     `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+
+  enum
+    {
+      REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+    } __ordering;
+
+  /* If the POSIXLY_CORRECT environment variable is set
+     or getopt was called.  */
+  int __posixly_correct;
+
 
   /* Handle permutation of arguments.  */
 
   /* Describe the part of ARGV that contains non-options that have
-     been skipped.  'first_nonopt' is the index in ARGV of the first
-     of them; 'last_nonopt' is the index after the last of them.  */
+     been skipped.  `first_nonopt' is the index in ARGV of the first
+     of them; `last_nonopt' is the index after the last of them.  */
 
   int __first_nonopt;
   int __last_nonopt;
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+  int __nonoption_flags_max_len;
+  int __nonoption_flags_len;
+# endif
 };
 
 /* The initializer is necessary to set OPTIND and OPTERR to their
@@ -103,8 +114,8 @@ struct _getopt_data
 extern int _getopt_internal_r (int ___argc, char **___argv,
 			       const char *__shortopts,
 			       const struct option *__longopts, int *__longind,
-			       int __long_only, struct _getopt_data *__data,
-			       int __posixly_correct);
+			       int __long_only, int __posixly_correct,
+			       struct _getopt_data *__data);
 
 extern int _getopt_long_r (int ___argc, char **___argv,
 			   const char *__shortopts,

m4/.gitignore

@@ -1,4 +1,3 @@
-build-to-host.m4
 codeset.m4
 extern-inline.m4
 fcntl-o.m4

m4/ax_check_capsicum.m4

@@ -0,0 +1,85 @@
+# -*- Autoconf -*-
+
+# SYNOPSIS
+#
+#   AX_CHECK_CAPSICUM([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+#   This macro searches for an installed Capsicum header and library,
+#   and if found:
+#     - AC_DEFINE([HAVE_CAPSICUM]) is called.
+#     - AC_DEFINE([HAVE_SYS_CAPSICUM_H]) is called if <sys/capsicum.h>
+#       is present (otherwise <sys/capability.h> must be used).
+#     - CAPSICUM_LIB is set to the -l option needed to link Capsicum support,
+#       and AC_SUBST([CAPSICUM_LIB]) is called.
+#     - The shell commands in ACTION-IF-FOUND are run. The default
+#       ACTION-IF-FOUND prepends ${CAPSICUM_LIB} into LIBS. If you don't
+#       want to modify LIBS and don't need to run any other commands either,
+#       use a colon as ACTION-IF-FOUND.
+#
+#   If Capsicum support isn't found:
+#     - The shell commands in ACTION-IF-NOT-FOUND are run. The default
+#       ACTION-IF-NOT-FOUND calls AC_MSG_WARN to print a warning that
+#       Capsicum support wasn't found.
+#
+#   You should use autoheader to include a definition for the symbols above
+#   in a config.h file.
+#
+#   Sample usage in a C/C++ source is as follows:
+#
+#     #ifdef HAVE_CAPSICUM
+#     # ifdef HAVE_SYS_CAPSICUM_H
+#     #  include <sys/capsicum.h>
+#     # else
+#     #  include <sys/capability.h>
+#     # endif
+#     #endif /* HAVE_CAPSICUM */
+#
+# LICENSE
+#
+#   Copyright (c) 2014 Google Inc.
+#   Copyright (c) 2015 Lasse Collin <lasse.collin@tukaani.org>
+#
+#   Copying and distribution of this file, with or without modification,
+#   are permitted in any medium without royalty provided the copyright
+#   notice and this notice are preserved.  This file is offered as-is,
+#   without any warranty.
+
+#serial 2
+
+AC_DEFUN([AX_CHECK_CAPSICUM], [
+# On FreeBSD >= 11.x and Linux, Capsicum is uses <sys/capsicum.h>.
+# If this header is found, it is assumed to be the right one.
+capsicum_header_found=no
+AC_CHECK_HEADERS([sys/capsicum.h], [capsicum_header_found=yes])
+if test "$capsicum_header_found" = no ; then
+    # On FreeBSD 10.x Capsicum uses <sys/capability.h>. Such a header exists
+    # on Linux too but it describes POSIX.1e capabilities. Look for the
+    # declaration of cap_rights_limit to check if <sys/capability.h> is
+    # a Capsicum header.
+    AC_CHECK_DECL([cap_rights_limit], [capsicum_header_found=yes], [],
+                  [#include <sys/capability.h>])
+fi
+
+capsicum_lib_found=no
+CAPSICUM_LIB=
+if test "$capsicum_header_found" = yes ; then
+    AC_LANG_PUSH([C])
+    # FreeBSD >= 10.x has Capsicum functions in libc.
+    AC_LINK_IFELSE([AC_LANG_CALL([], [cap_rights_limit])],
+                   [capsicum_lib_found=yes], [])
+    # Linux has Capsicum functions in libcaprights.
+    AC_CHECK_LIB([caprights], [cap_rights_limit],
+                 [CAPSICUM_LIB=-lcaprights
+                  capsicum_lib_found=yes], [])
+    AC_LANG_POP([C])
+fi
+AC_SUBST([CAPSICUM_LIB])
+
+if test "$capsicum_lib_found" = yes ; then
+    AC_DEFINE([HAVE_CAPSICUM], [1], [Define to 1 if Capsicum is available.])
+    m4_default([$1], [LIBS="${CAPSICUM_LIB} $LIBS"])
+else
+    m4_default([$2], [AC_MSG_WARN([Capsicum support not found])])
+fi])

m4/ax_pthread.m4

@@ -1,5 +1,3 @@
-dnl SPDX-License-Identifier: GPL-3.0-or-later WITH Autoconf-exception-macro
-
 # ===========================================================================
 #        https://www.gnu.org/software/autoconf-archive/ax_pthread.html
 # ===========================================================================

m4/getopt.m4

@@ -1,70 +1,71 @@
-dnl SPDX-License-Identifier: FSFULLR
-
-# getopt.m4 serial 49 (modified version)
-dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
+# getopt.m4 serial 14 (modified version)
+dnl Copyright (C) 2002-2006, 2008 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
-# This version has been modified to reduce complexity since we only need
-# GNU getopt_long and do not care about replacing getopt.
-#
-# Pass gl_replace_getopt=yes (or any non-empty value instead of "yes") as
-# an argument to configure to force the use of the getopt_long replacement.
+# The getopt module assume you want GNU getopt, with getopt_long etc,
+# rather than vanilla POSIX getopt.  This means your code should
+# always include <getopt.h> for the getopt prototypes.
 
-AC_DEFUN([gl_FUNC_GETOPT_GNU],
+AC_DEFUN([gl_GETOPT_SUBSTITUTE],
 [
-  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+  AC_LIBOBJ([getopt])
+  AC_LIBOBJ([getopt1])
+  gl_GETOPT_SUBSTITUTE_HEADER
+])
 
-  if test -n "$gl_replace_getopt"; then
-    gl_GETOPT_SUBSTITUTE
-  fi
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+  GETOPT_H=getopt.h
+  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+    [Define to rpl_ if the getopt replacement functions and variables
+     should be used.])
+  AC_SUBST([GETOPT_H])
 ])
 
 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 [
-  if test -z "$gl_replace_getopt"; then
-    AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
+  if test -z "$GETOPT_H"; then
+    AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
   fi
 
-  if test -z "$gl_replace_getopt"; then
-    AC_CHECK_FUNCS([getopt_long], [], [gl_replace_getopt=yes])
+  if test -z "$GETOPT_H"; then
+    AC_CHECK_FUNCS([getopt_long], [], [GETOPT_H=getopt.h])
   fi
 
   dnl BSD getopt_long uses a way to reset option processing, that is different
   dnl from GNU and Solaris (which copied the GNU behavior). We support both
   dnl GNU and BSD style resetting of getopt_long(), so there's no need to use
   dnl GNU getopt_long() on BSD due to different resetting style.
-  if test -z "$gl_replace_getopt"; then
+  dnl
+  dnl With getopt_long(), some BSD versions have a bug in handling optional
+  dnl arguments. This bug appears only if the environment variable
+  dnl POSIXLY_CORRECT has been set, so it shouldn't be too bad in most
+  dnl cases; probably most don't have that variable set. But if we actually
+  dnl hit this bug, it is a real problem due to our heavy use of optional
+  dnl arguments.
+  dnl
+  dnl According to CVS logs, the bug was introduced in OpenBSD in 2003-09-22
+  dnl and copied to FreeBSD in 2004-02-24. It was fixed in both in 2006-09-22,
+  dnl so the affected versions shouldn't be popular anymore anyway. NetBSD
+  dnl never had this bug. TODO: What about Darwin and others?
+  if test -z "$GETOPT_H"; then
     AC_CHECK_DECL([optreset],
       [AC_DEFINE([HAVE_OPTRESET], 1,
         [Define to 1 if getopt.h declares extern int optreset.])],
       [], [#include <getopt.h>])
   fi
 
-  dnl POSIX 2008 does not specify leading '+' behavior, but see
-  dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
-  dnl the next version of POSIX.  We don't use that feature, so this
+  dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+  dnl option string (as of 2005-05-05). We don't use that feature, so this
   dnl is not a problem for us. Thus, the respective test was removed here.
-
-  dnl Checks for getopt handling '-' as a leading character in an option
-  dnl string were removed, since we also don't use that feature.
-
 ])
 
-AC_DEFUN([gl_GETOPT_SUBSTITUTE],
+AC_DEFUN([gl_GETOPT_IFELSE],
 [
-  AC_LIBOBJ([getopt])
-  AC_LIBOBJ([getopt1])
-
-  AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
-
-  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
-    [Define to rpl_ if the getopt replacement functions and variables
-     should be used.])
-
-  GETOPT_H=getopt.h
-  AC_SUBST([GETOPT_H])
+  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+  AS_IF([test -n "$GETOPT_H"], [$1], [$2])
 ])
 
-AC_DEFUN([gl_GETOPT], [gl_FUNC_GETOPT_GNU])
+AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])

m4/posix-shell.m4

@@ -1,14 +1,11 @@
-dnl SPDX-License-Identifier: FSFULLR
-
-# posix-shell.m4
-# serial 1
-dnl Copyright (C) 2007-2024 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
 # Find a POSIX-conforming shell.
 
+# Copyright (C) 2007-2008 Free Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
 # Written by Paul Eggert.
 
 # If a POSIX-conforming shell can be found, set POSIX_SHELL and
@@ -20,22 +17,22 @@ AC_DEFUN([gl_POSIX_SHELL],
   AC_CACHE_CHECK([for a shell that conforms to POSIX], [gl_cv_posix_shell],
     [gl_test_posix_shell_script='
        func_return () {
-         (exit [$]1)
+	 (exit [$]1)
        }
        func_success () {
-         func_return 0
+	 func_return 0
        }
        func_failure () {
-         func_return 1
+	 func_return 1
        }
        func_ret_success () {
-         return 0
+	 return 0
        }
        func_ret_failure () {
-         return 1
+	 return 1
        }
        subshell_umask_sanity () {
-         (umask 22; (umask 0); test $(umask) -eq 22)
+	 (umask 22; (umask 0); test $(umask) -eq 22)
        }
        test "[$](echo foo)" = foo &&
        func_success &&
@@ -46,11 +43,11 @@ AC_DEFUN([gl_POSIX_SHELL],
        subshell_umask_sanity
      '
      for gl_cv_posix_shell in \
-         "$CONFIG_SHELL" "$SHELL" /bin/sh /bin/bash /bin/ksh /bin/sh5 no; do
+	 "$CONFIG_SHELL" "$SHELL" /bin/sh /bin/bash /bin/ksh /bin/sh5 no; do
        case $gl_cv_posix_shell in
          /*)
-           "$gl_cv_posix_shell" -c "$gl_test_posix_shell_script" 2>/dev/null \
-             && break;;
+	   "$gl_cv_posix_shell" -c "$gl_test_posix_shell_script" 2>/dev/null \
+	     && break;;
        esac
      done])
 

m4/tuklib_common.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -10,11 +7,13 @@
 #
 #   Common checks for tuklib.
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_COMMON], [
 AC_REQUIRE([AC_CANONICAL_HOST])

m4/tuklib_cpucores.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -20,11 +17,13 @@
 #       GetSystemInfo() is used on Cygwin)
 #     - pstat_getdynamic(): HP-UX
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_CPUCORES], [
 AC_REQUIRE([TUKLIB_COMMON])
@@ -71,7 +70,7 @@ main(void)
 # -lfreebsd-glue when linking and thus in the current form this would
 # fail on GNU/kFreeBSD. The above test for sched_getaffinity() matches
 # on GNU/kFreeBSD so the test below should never run on that OS.
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/param.h>
 #include <sys/cpuset.h>
 
@@ -92,7 +91,7 @@ main(void)
 #
 # We test sysctl() first and intentionally break the sysctl() test on QNX
 # so that sysctl() is never used on QNX.
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #ifdef __QNX__
 compile error
 #endif
@@ -116,7 +115,7 @@ main(void)
 }
 ]])], [tuklib_cv_cpucores_method=sysctl], [
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <unistd.h>
 int
 main(void)
@@ -133,7 +132,7 @@ main(void)
 }
 ]])], [tuklib_cv_cpucores_method=sysconf], [
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/param.h>
 #include <sys/pstat.h>
 

m4/tuklib_integer.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -14,11 +11,13 @@
 #     - Does the hardware support fast unaligned access to 16-bit, 32-bit,
 #       and 64-bit integers
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_INTEGER], [
 AC_REQUIRE([TUKLIB_COMMON])
@@ -62,158 +61,30 @@ main(void)
 	fi
 ])
 
-# On archs that we use tuklib_integer_strict_align() (see below), we need
-# objdump to detect support for unaligned access. (Libtool needs objdump
-# too, so Libtool does this same tool check as well.)
-AC_CHECK_TOOL([OBJDUMP], [objdump], [false])
-
-# An internal helper that attempts to detect if -mstrict-align or
-# -mno-strict-align is in effect. This sets enable_unaligned_access=yes
-# if compilation succeeds and the regex passed as an argument does *not*
-# match the objdump output of a check program. Otherwise this sets
-# enable_unaligned_access=no.
-tuklib_integer_strict_align ()
-{
-	# First guess no.
-	enable_unaligned_access=no
-
-	# Force -O2 because without optimizations the memcpy()
-	# won't be optimized out.
-	tuklib_integer_saved_CFLAGS=$CFLAGS
-	CFLAGS="$CFLAGS -O2"
-	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-			#include <string.h>
-			unsigned int check_strict_align(const void *p)
-			{
-				unsigned int i;
-				memcpy(&i, p, sizeof(i));
-				return i;
-			}
-		]])], [
-			# Disassemble the test function from the object file.
-			if $OBJDUMP -d conftest.$ac_objext > conftest.s ; then
-				# This function should be passed a regex that
-				# matches if there are instructions that load
-				# unsigned bytes. Such instructions indicate
-				# that -mstrict-align is in effect.
-				#
-				# NOTE: Use braces to avoid M4 parameter
-				# expansion.
-				if grep -- "${1}" conftest.s > /dev/null ; then
-					:
-				else
-					# No single-byte unsigned load
-					# instructions were found,
-					# so it seems that -mno-strict-align
-					# is in effect.
-					# Override our earlier guess.
-					enable_unaligned_access=yes
-				fi
-			fi
-		])
-	CFLAGS=$tuklib_integer_saved_CFLAGS
-}
-
 AC_MSG_CHECKING([if unaligned memory access should be used])
 AC_ARG_ENABLE([unaligned-access], AS_HELP_STRING([--enable-unaligned-access],
 		[Enable if the system supports *fast* unaligned memory access
 		with 16-bit, 32-bit, and 64-bit integers. By default,
-		this is enabled on x86, x86-64,
-		32/64-bit big endian PowerPC,
-		64-bit little endian PowerPC,
-		and some ARM, ARM64, and RISC-V systems.]),
+		this is enabled only on x86, x86_64, big endian PowerPC,
+		and some ARM systems.]),
 	[], [enable_unaligned_access=auto])
 if test "x$enable_unaligned_access" = xauto ; then
-	# NOTE: There might be other architectures on which unaligned access
-	# is fast.
+	# TODO: There may be other architectures, on which unaligned access
+	# is OK.
 	case $host_cpu in
-		i?86|x86_64|powerpc|powerpc64|powerpc64le)
+		i?86|x86_64|powerpc|powerpc64)
 			enable_unaligned_access=yes
 			;;
-		arm*|riscv*)
-			# On 32-bit ARM, GCC and Clang
-			# #define __ARM_FEATURE_UNALIGNED
-			# if and only if unaligned access is supported.
-			#
-			# RISC-V C API Specification says that if
-			# __riscv_misaligned_fast is defined then
-			# unaligned access is known to be fast.
-			#
-			# MSVC is handled as a special case: We assume that
-			# 32-bit ARM supports fast unaligned access.
-			# If MSVC gets RISC-V support then this will assume
-			# fast unaligned access on RISC-V too.
+		arm*|aarch64*)
+			# On 32-bit and 64-bit ARM, GCC and Clang
+			# #define __ARM_FEATURE_UNALIGNED if
+			# unaligned access is supported.
 			AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-				#if !defined(__ARM_FEATURE_UNALIGNED) \
-					&& !defined(__riscv_misaligned_fast) \
-					&& !defined(_MSC_VER)
-				compile error
-				#endif
-				int main(void) { return 0; }
-			])],
-			[enable_unaligned_access=yes],
-			[enable_unaligned_access=no])
-			;;
-		aarch64*)
-			# On ARM64, Clang defines __ARM_FEATURE_UNALIGNED
-			# if and only if unaligned access is supported.
-			# However, GCC (at least up to 15.2.0) defines it
-			# even when using -mstrict-align, so autodetection
-			# with this macro doesn't work with GCC on ARM64.
-			# (It does work on 32-bit ARM.) See:
-			#
-			# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111555
-			#
-			# We need three checks:
-			#
-			# 1. If __ARM_FEATURE_UNALIGNED is defined and the
-			#    compiler isn't GCC, unaligned access is enabled.
-			#    If the compiler is MSVC, unaligned access is
-			#    enabled even without __ARM_FEATURE_UNALIGNED.
-			AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-				#if defined(__ARM_FEATURE_UNALIGNED) \
-					&& (!defined(__GNUC__) \
-						|| defined(__clang__))
-				#elif defined(_MSC_VER)
-				#else
-				compile error
-				#endif
-				int main(void) { return 0; }
-			])], [enable_unaligned_access=yes])
-
-			# 2. If __ARM_FEATURE_UNALIGNED is not defined,
-			#    unaligned access is disabled.
-			if test "x$enable_unaligned_access" = xauto ; then
-				AC_COMPILE_IFELSE([AC_LANG_SOURCE([
-					#ifdef __ARM_FEATURE_UNALIGNED
-					compile error
-					#endif
-					int main(void) { return 0; }
-				])], [enable_unaligned_access=no])
-			fi
-
-			# 3. Use heuristics to detect if -mstrict-align is
-			#    in effect when building with GCC.
-			if test "x$enable_unaligned_access" = xauto ; then
-				[tuklib_integer_strict_align \
-						'[[:blank:]]ldrb[[:blank:]]']
-			fi
-			;;
-		loongarch*)
-			# See sections 7.4, 8.1, and 8.2:
-			# https://github.com/loongson/la-softdev-convention/blob/v0.2/la-softdev-convention.adoc
-			#
-			# That is, desktop and server processors likely support
-			# unaligned access in hardware but embedded processors
-			# might not. GCC defaults to -mno-strict-align and so
-			# do majority of GNU/Linux distributions. As of
-			# GCC 15.2, there is no predefined macro to detect
-			# if -mstrict-align or -mno-strict-align is in effect.
-			# Use heuristics based on compiler output.
-			[
-				tuklib_integer_strict_align \
-						'[[:blank:]]ld\.bu[[:blank:]]'
-			]
+#ifndef __ARM_FEATURE_UNALIGNED
+compile error
+#endif
+int main(void) { return 0; }
+])], [enable_unaligned_access=yes], [enable_unaligned_access=no])
 			;;
 		*)
 			enable_unaligned_access=no

m4/tuklib_mbstr.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -18,14 +15,16 @@
 #   functions, but each function is put into a separate .c file so
 #   that it is possible to pick only what is strictly needed.
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_MBSTR], [
 AC_REQUIRE([TUKLIB_COMMON])
 AC_FUNC_MBRTOWC
-AC_CHECK_FUNCS([wcwidth vasprintf])
+AC_CHECK_FUNCS([wcwidth])
 ])dnl

m4/tuklib_physmem.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -32,11 +29,13 @@
 #     - sysinfo() works on Linux/dietlibc and probably on other Linux
 #       systems whose libc may lack sysconf().
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_PHYSMEM], [
 AC_REQUIRE([TUKLIB_COMMON])
@@ -65,11 +64,6 @@ compile error
 # Look for AIX-specific solution before sysconf(), because the test
 # for sysconf() will pass on AIX but won't actually work
 # (sysconf(_SC_PHYS_PAGES) compiles but always returns -1 on AIX).
-#
-# NOTE: There is no need to link the check program because it's not calling
-# any functions and thus implicit function declarations aren't a problem.
-# The unused reference to _system_configuration.physmem might get optimized
-# away, and thus the linker might not see that symbol anyway.
 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/systemcfg.h>
 
@@ -81,7 +75,7 @@ main(void)
 }
 ]])], [tuklib_cv_physmem_method=aix], [
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <unistd.h>
 int
 main(void)
@@ -93,7 +87,7 @@ main(void)
 }
 ]])], [tuklib_cv_physmem_method=sysconf], [
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #ifdef HAVE_SYS_PARAM_H
 #	include <sys/param.h>
 #endif
@@ -109,7 +103,7 @@ main(void)
 }
 ]])], [tuklib_cv_physmem_method=sysctl], [
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/sysinfo.h>
 #include <machine/hal_sysinfo.h>
 
@@ -123,7 +117,7 @@ main(void)
 }
 ]])], [tuklib_cv_physmem_method=getsysinfo],[
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/param.h>
 #include <sys/pstat.h>
 
@@ -138,7 +132,7 @@ main(void)
 }
 ]])], [tuklib_cv_physmem_method=pstat_getstatic],[
 
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <invent.h>
 int
 main(void)
@@ -155,7 +149,7 @@ main(void)
 # different sysinfo() so we must check $host_os.
 case $host_os in
 	linux*)
-		AC_LINK_IFELSE([AC_LANG_SOURCE([[
+		AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
 #include <sys/sysinfo.h>
 int
 main(void)

m4/tuklib_progname.m4

@@ -1,6 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
-#############################################################################
 #
 # SYNOPSIS
 #
@@ -14,16 +11,18 @@
 #   This .m4 file is needed allow this module to use glibc's
 #   program_invocation_name.
 #
-#############################################################################
+# COPYING
 #
-# Author: Lasse Collin
+#   Author: Lasse Collin
+#
+#   This file has been put into the public domain.
+#   You can do whatever you want with this file.
 #
-#############################################################################
 
 AC_DEFUN_ONCE([TUKLIB_PROGNAME], [
 AC_REQUIRE([TUKLIB_COMMON])
 AC_CHECK_DECL([program_invocation_name], [AC_DEFINE(
 	[HAVE_PROGRAM_INVOCATION_NAME], [1],
-	[Define to 1 if 'program_invocation_name' is declared in <errno.h>.])],
+	[Define to 1 if `program_invocation_name' is declared in <errno.h>.])],
 	[], [#include <errno.h>])
 ])dnl

m4/visibility.m4

@@ -1,8 +1,5 @@
-dnl SPDX-License-Identifier: FSFULLR
-
-# visibility.m4
-# serial 9
-dnl Copyright (C) 2005, 2008, 2010-2024 Free Software Foundation, Inc.
+# visibility.m4 serial 8
+dnl Copyright (C) 2005, 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -34,18 +31,18 @@ AC_DEFUN([gl_VISIBILITY],
     dnl user has put into $CC $CFLAGS $CPPFLAGS.
     AC_CACHE_CHECK([whether the -Werror option is usable],
       [gl_cv_cc_vis_werror],
-      [gl_saved_CFLAGS="$CFLAGS"
+      [gl_save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS -Werror"
        AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM([[]], [[]])],
          [gl_cv_cc_vis_werror=yes],
          [gl_cv_cc_vis_werror=no])
-       CFLAGS="$gl_saved_CFLAGS"
+       CFLAGS="$gl_save_CFLAGS"
       ])
     dnl Now check whether visibility declarations are supported.
     AC_CACHE_CHECK([for simple visibility declarations],
       [gl_cv_cc_visibility],
-      [gl_saved_CFLAGS="$CFLAGS"
+      [gl_save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS -fvisibility=hidden"
        dnl We use the option -Werror and a function dummyfunc, because on some
        dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
@@ -71,7 +68,7 @@ AC_DEFUN([gl_VISIBILITY],
             [[]])],
          [gl_cv_cc_visibility=yes],
          [gl_cv_cc_visibility=no])
-       CFLAGS="$gl_saved_CFLAGS"
+       CFLAGS="$gl_save_CFLAGS"
       ])
     if test $gl_cv_cc_visibility = yes; then
       CFLAG_VISIBILITY="-fvisibility=hidden"

macosx/build.sh

@@ -0,0 +1,113 @@
+#!/bin/sh
+
+###############################################################################
+# Author: Anders F Björklund <afb@users.sourceforge.net>
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+###############################################################################
+
+mkdir -p Root
+mkdir -p Resources
+
+# Abort immediately if something goes wrong.
+set -e
+
+GCC="gcc-4.2"
+SDK="/Developer/SDKs/MacOSX10.5.sdk"
+MDT="10.5"
+GTT=i686-apple-darwin9
+
+ARCHES1="-arch ppc -arch ppc64 -arch i386 -arch x86_64"
+ARCHES2="-arch ppc -arch i386"
+PKGFORMAT="10.5" # xar
+
+# avoid "unknown required load command: 0x80000022" from linking on Snow Leopard
+uname -r | grep ^1 >/dev/null && LDFLAGS="$LDFLAGS -Wl,-no_compact_linkedit"
+
+# Clean up if it was already configured.
+[ -f Makefile ] && make distclean
+
+# Build the regular fat program
+
+CC="$GCC" \
+CFLAGS="-O2 -g $ARCHES1 -isysroot $SDK -mmacosx-version-min=$MDT" \
+../configure --disable-dependency-tracking --disable-xzdec --disable-lzmadec $GTT
+
+make
+
+make check
+
+make DESTDIR=`pwd`/Root install
+
+make distclean
+
+# Build the size-optimized program
+
+CC="$GCC" \
+CFLAGS="-Os -g $ARCHES2 -isysroot $SDK -mmacosx-version-min=$MDT" \
+../configure --disable-dependency-tracking --disable-shared --disable-nls --disable-encoders --enable-small --disable-threads $GTT
+
+make -C src/liblzma
+make -C src/xzdec
+make -C src/xzdec DESTDIR=`pwd`/Root install
+
+cp -a ../extra Root/usr/local/share/doc/xz
+
+make distclean
+
+# Move development files to different package
+
+test -d liblzma && rm -r liblzma
+mkdir -p liblzma/usr/local
+
+mv Root/usr/local/include liblzma/usr/local
+mv Root/usr/local/lib liblzma/usr/local
+
+mkdir -p Root/usr/local/lib
+cp -p liblzma/usr/local/lib/liblzma.5.dylib Root/usr/local/lib
+mkdir -p liblzma/usr/local/share/doc/xz
+mv Root/usr/local/share/doc/xz/examples* liblzma/usr/local/share/doc/xz
+
+# Strip debugging symbols and make relocatable
+
+for bin in xz lzmainfo xzdec lzmadec; do
+    strip -S Root/usr/local/bin/$bin
+    install_name_tool -change /usr/local/lib/liblzma.5.dylib @executable_path/../lib/liblzma.5.dylib Root/usr/local/bin/$bin
+done
+
+for lib in liblzma.5.dylib; do
+    strip -S Root/usr/local/lib/$lib
+    install_name_tool -id @executable_path/../lib/liblzma.5.dylib Root/usr/local/lib/$lib
+done
+
+# Create tarball, but without the HFS+ attrib
+
+rmdir debug lib po src/liblzma/api src/liblzma src/lzmainfo src/scripts src/xz src/xzdec src tests
+
+( cd Root/usr/local; COPY_EXTENDED_ATTRIBUTES_DISABLE=true COPYFILE_DISABLE=true tar cvjf ../../../XZ.tbz * )
+( cd liblzma; COPY_EXTENDED_ATTRIBUTES_DISABLE=true COPYFILE_DISABLE=true tar cvjf ../liblzma.tbz ./usr/local )
+
+# Include documentation files for package
+
+cp -p ../README Resources/ReadMe.txt
+cp -p ../COPYING Resources/License.txt
+
+# Make an Installer.app package
+
+ID="org.tukaani.xz"
+VERSION=`cd ..; sh build-aux/version.sh`
+PACKAGEMAKER=/Developer/Applications/Utilities/PackageMaker.app/Contents/MacOS/PackageMaker
+$PACKAGEMAKER -r Root/usr/local -l /usr/local -e Resources -i $ID -n $VERSION -t XZ -o XZ.pkg -g $PKGFORMAT --verbose
+$PACKAGEMAKER -r liblzma -w -k -i $ID.liblzma -n $VERSION -o liblzma.pkg -g $PKGFORMAT --verbose
+
+# Put the package in a disk image
+
+if [ "$PKGFORMAT" != "10.5" ]; then
+hdiutil create -fs HFS+ -format UDZO -quiet -srcfolder XZ.pkg -ov XZ.dmg
+hdiutil internet-enable -yes -quiet XZ.dmg
+fi
+
+echo
+echo "Build completed successfully."
+echo

po/.gitignore

@@ -5,7 +5,6 @@ Rules-quot
 boldquot.sed
 en@boldquot.header
 en@quot.header
-insert-header.sed
 insert-header.sin
 quot.sed
 remove-potcdate.sin

po/LINGUAS

@@ -9,9 +9,7 @@ fr
 hr
 hu
 it
-ka
 ko
-nl
 pl
 pt
 pt_BR

po/Makevars

@@ -1,10 +1,4 @@
-# SPDX-License-Identifier: FSFUL
-
 # Makefile variables for PO directory in any package using GNU gettext.
-#
-# Copyright (C) 2003-2019 Free Software Foundation, Inc.
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to use, copy, distribute, and modify it.
 
 # Usually the message domain is the same as the package name.
 DOMAIN = $(PACKAGE)
@@ -14,7 +8,7 @@ subdir = po
 top_builddir = ..
 
 # These options get passed to xgettext.
-XGETTEXT_OPTIONS = --add-location=file --no-wrap --keyword=_ --keyword=N_ '--keyword=W_:1,"This is word wrapped at spaces. The Unicode character U+00A0 works as a non-breaking space. Tab (\t) is interpret as a zero-width space (the tab itself is not displayed); U+200B is NOT supported. Manual word wrapping with \n is supported but requires care."'
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
 
 # This is the copyright holder that gets inserted into the header of the
 # $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
@@ -24,14 +18,7 @@ XGETTEXT_OPTIONS = --add-location=file --no-wrap --keyword=_ --keyword=N_ '--key
 # or entity, or to disclaim their copyright.  The empty string stands for
 # the public domain; in this case the translators are expected to disclaim
 # their copyright.
-COPYRIGHT_HOLDER = The XZ Utils authors and contributors
-
-# This tells whether or not to prepend "GNU " prefix to the package
-# name that gets inserted into the header of the $(DOMAIN).pot file.
-# Possible values are "yes", "no", or empty.  If it is empty, try to
-# detect it automatically by scanning the files in $(top_srcdir) for
-# "GNU packagename" string.
-PACKAGE_GNU = no
+COPYRIGHT_HOLDER =
 
 # This is the email address or URL to which the translators shall report
 # bugs in the untranslated strings:
@@ -53,39 +40,7 @@ MSGID_BUGS_ADDRESS =
 # message catalogs shall be used.  It is usually empty.
 EXTRA_LOCALE_CATEGORIES =
 
-# This tells whether the $(DOMAIN).pot file contains messages with an 'msgctxt'
-# context.  Possible values are "yes" and "no".  Set this to yes if the
-# package uses functions taking also a message context, like pgettext(), or
-# if in $(XGETTEXT_OPTIONS) you define keywords with a context argument.
-USE_MSGCTXT = no
-
-# These options get passed to msgmerge.
-# Useful options are in particular:
-#   --previous            to keep previous msgids of translated messages,
-#   --quiet               to reduce the verbosity.
-MSGMERGE_OPTIONS = --add-location=file --no-wrap
-
-# These options get passed to msginit.
-# If you want to disable line wrapping when writing PO files, add
-# --no-wrap to MSGMERGE_OPTIONS, XGETTEXT_OPTIONS, and
-# MSGINIT_OPTIONS.
-#
-# Although one may need slightly wider terminal than 80 chars, it is
-# much nicer to edit the output of --help when --no-wrap is set.
-MSGINIT_OPTIONS = --no-wrap
-
-# This tells whether or not to regenerate a PO file when $(DOMAIN).pot
-# has changed.  Possible values are "yes" and "no".  Set this to no if
-# the POT file is checked in the repository and the version control
-# program ignores timestamps.
-PO_DEPENDS_ON_POT = yes
-
-# This tells whether or not to forcibly update $(DOMAIN).pot and
-# regenerate PO files on "make dist".  Possible values are "yes" and
-# "no".  Set this to no if the POT file and PO files are maintained
-# externally.
-#
-# NOTE: The the custom "mydist" target in ../Makefile.am updates xz.pot.
-# An updated xz.pot will cause the .po files to be updated too but
-# only when updating would change more than the POT-Creation-Date line.
-DIST_DEPENDS_ON_UPDATE_PO = no
+# Although you may need slightly wider terminal than 80 chars, it is
+# much nicer to edit the output of --help when this is set.
+XGETTEXT_OPTIONS += --no-wrap
+MSGMERGE += --no-wrap

po/POTFILES.in

@@ -1,5 +1,3 @@
-# SPDX-License-Identifier: 0BSD
-
 # List of source files which contain translatable strings.
 src/xz/args.c
 src/xz/coder.c
@@ -8,12 +6,8 @@ src/xz/hardware.c
 src/xz/list.c
 src/xz/main.c
 src/xz/message.c
-src/xz/mytime.c
 src/xz/options.c
-src/xz/sandbox.c
 src/xz/signals.c
 src/xz/suffix.c
 src/xz/util.c
-src/lzmainfo/lzmainfo.c
 src/common/tuklib_exit.c
-src/liblzma/common/string_conversion.c