63 lines
2.7 KiB
Plaintext
63 lines
2.7 KiB
Plaintext
# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_func_getopt_long.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_FUNC_GETOPT_LONG
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#
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# DESCRIPTION
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#
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# Check for getopt_long support.
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#
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# This assume that the standard getopt.h file (from GNU libc) is available
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# as src/common/compat_getopt.h. If needed, this file will be linked as getopt.h, but
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# we want to default to the system's getopt.h file. (See
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# http://sources.redhat.com/ml/automake/2000-09/msg00041.html for an
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# explanation about why using the system's getopt.h file is important.)
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#
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# LICENSE
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#
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# Copyright (c) 2008 Alexandre Duret-Lutz <adl@gnu.org>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 6
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AU_ALIAS([ADL_FUNC_GETOPT_LONG], [AX_FUNC_GETOPT_LONG])
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AC_DEFUN([AX_FUNC_GETOPT_LONG],
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[AC_PREREQ(2.49)dnl
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# clean out junk possibly left behind by a previous configuration
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rm -f src/getopt.h
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# Check for getopt_long support
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AC_CHECK_HEADERS([getopt.h])
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AC_CHECK_FUNCS([getopt_long],,
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[# FreeBSD has a gnugetopt library for this
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AC_CHECK_LIB([gnugetopt],[getopt_long],[AC_DEFINE([HAVE_GETOPT_LONG])],
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[# use the OpenSC replacement
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AC_CONFIG_LINKS([src/getopt.h:src/common/compat_getopt.h])])])])
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