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This file was modified from upstream since we do not need to replace getopt() and can avoid complexity and feature tests.
71 lines
2.3 KiB
Plaintext
71 lines
2.3 KiB
Plaintext
# getopt.m4 serial 49 (modified version)
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dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# This version has been modified to reduce complexity since we only need
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# GNU getopt_long and do not care about replacing getopt.
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# Check for a POSIX compliant getopt function with GNU extensions (such as
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# options with optional arguments) and the functions getopt_long,
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# getopt_long_only.
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AC_DEFUN([gl_FUNC_GETOPT_GNU],
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[
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AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
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if test -n "$gl_replace_getopt"; then
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gl_GETOPT_SUBSTITUTE
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fi
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])
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AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
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[
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gl_replace_getopt=
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if test -z "$gl_replace_getopt"; then
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AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
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fi
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if test -z "$gl_replace_getopt"; then
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AC_CHECK_FUNCS([getopt_long], [], [gl_replace_getopt=yes])
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fi
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dnl BSD getopt_long uses a way to reset option processing, that is different
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dnl from GNU and Solaris (which copied the GNU behavior). We support both
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dnl GNU and BSD style resetting of getopt_long(), so there's no need to use
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dnl GNU getopt_long() on BSD due to different resetting style.
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if test -z "$gl_replace_getopt"; then
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AC_CHECK_DECL([optreset],
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[AC_DEFINE([HAVE_OPTRESET], 1,
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[Define to 1 if getopt.h declares extern int optreset.])],
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[], [#include <getopt.h>])
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fi
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dnl POSIX 2008 does not specify leading '+' behavior, but see
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dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
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dnl the next version of POSIX. We don't use that feature, so this
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dnl is not a problem for us. Thus, the respective test was removed here.
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dnl Checks for getopt handling `-' as a leading character in an option
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dnl string were removed, since we also don't use that feature.
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])
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AC_DEFUN([gl_GETOPT_SUBSTITUTE],
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[
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AC_LIBOBJ([getopt])
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AC_LIBOBJ([getopt1])
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AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
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AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
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[Define to rpl_ if the getopt replacement functions and variables
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should be used.])
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GETOPT_H=getopt.h
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AC_SUBST([GETOPT_H])
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])
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AC_DEFUN([gl_GETOPT], [gl_FUNC_GETOPT_GNU])
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