mirror of https://git.tukaani.org/xz.git
84 lines
2.5 KiB
Plaintext
84 lines
2.5 KiB
Plaintext
# getopt.m4 serial 13
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dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 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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# The getopt module assume you want GNU getopt, with getopt_long etc,
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# rather than vanilla POSIX getopt. This means your code should
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# always include <getopt.h> for the getopt prototypes.
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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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gl_GETOPT_SUBSTITUTE_HEADER
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gl_PREREQ_GETOPT
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])
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AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
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[
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GETOPT_H=getopt.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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AC_SUBST([GETOPT_H])
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])
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AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
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[
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if test -z "$GETOPT_H"; then
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AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
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fi
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if test -z "$GETOPT_H"; then
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AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
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fi
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dnl BSD getopt_long uses an incompatible method to reset option processing,
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dnl and (as of 2004-10-15) mishandles optional option-arguments.
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if test -z "$GETOPT_H"; then
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AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
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fi
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dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
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dnl option string (as of 2005-05-05).
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if test -z "$GETOPT_H"; then
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AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([#include <getopt.h>],
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[[
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char *myargv[3];
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myargv[0] = "conftest";
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myargv[1] = "-+";
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myargv[2] = 0;
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return getopt (2, myargv, "+a") != '?';
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]])],
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[gl_cv_func_gnu_getopt=yes],
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[gl_cv_func_gnu_getopt=no],
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[dnl cross compiling - pessimistically guess based on decls
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dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
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dnl option string (as of 2005-05-05).
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AC_CHECK_DECL([getopt_clip],
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[gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
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[#include <getopt.h>])])])
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if test "$gl_cv_func_gnu_getopt" = "no"; then
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GETOPT_H=getopt.h
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fi
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fi
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])
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AC_DEFUN([gl_GETOPT_IFELSE],
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[
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AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
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AS_IF([test -n "$GETOPT_H"], [$1], [$2])
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])
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AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
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# Prerequisites of lib/getopt*.
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AC_DEFUN([gl_PREREQ_GETOPT],
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[
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AC_CHECK_DECLS_ONCE([getenv])
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])
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