-# getopt.m4 serial 24
-dnl Copyright (C) 2002-2006, 2008-2010 Free Software Foundation, Inc.
+# getopt.m4 serial 34
+dnl Copyright (C) 2002-2006, 2008-2011 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.
AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
[
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_REQUIRE([AC_PROG_AWK]) dnl for awk that supports ENVIRON
dnl Persuade Solaris <unistd.h> to declare optarg, optind, opterr, optopt.
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
gl_CHECK_NEXT_HEADERS([getopt.h])
- AC_CHECK_HEADERS_ONCE([getopt.h])
if test $ac_cv_header_getopt_h = yes; then
HAVE_GETOPT_H=1
else
AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
fi
- dnl BSD getopt_long uses an incompatible method to reset option processing.
- dnl Existence of the variable, in and of itself, is not a reason to replace
- dnl getopt, but knowledge of the variable is needed to determine how to
- dnl reset and whether a reset reparses the environment.
- if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
- AC_CHECK_DECLS([optreset], [], [],
- [[#include <getopt.h>]])
- fi
-
dnl mingw's getopt (in libmingwex.a) does weird things when the options
dnl strings starts with '+' and it's not the first call. Some internal state
dnl is left over from earlier calls, and neither setting optind = 0 nor
dnl setting optreset = 1 get rid of this internal state.
dnl POSIX is silent on optind vs. optreset, so we allow either behavior.
+ dnl POSIX 2008 does not specify leading '+' behavior, but see
+ dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
+ dnl the next version of POSIX. For now, we only guarantee leading '+'
+ dnl behavior with getopt-gnu.
if test -z "$gl_replace_getopt"; then
AC_CACHE_CHECK([whether getopt is POSIX compatible],
[gl_cv_func_getopt_posix],
[
- dnl This test fails on mingw and succeeds on all other platforms.
+ dnl BSD getopt_long uses an incompatible method to reset
+ dnl option processing. Existence of the variable, in and of
+ dnl itself, is not a reason to replace getopt, but knowledge
+ dnl of the variable is needed to determine how to reset and
+ dnl whether a reset reparses the environment. Solaris
+ dnl supports neither optreset nor optind=0, but keeps no state
+ dnl that needs a reset beyond setting optind=1; detect Solaris
+ dnl by getopt_clip.
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <unistd.h>]],
+ [[int *p = &optreset; return optreset;]])],
+ [gl_optind_min=1],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <getopt.h>]],
+ [[return !getopt_clip;]])],
+ [gl_optind_min=1],
+ [gl_optind_min=0])])
+
+ dnl This test fails on mingw and succeeds on many other platforms.
+ gl_save_CPPFLAGS=$CPPFLAGS
+ CPPFLAGS="$CPPFLAGS -DOPTIND_MIN=$gl_optind_min"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
-#if !HAVE_DECL_OPTRESET
-# define OPTIND_MIN 0
-#else
-# define OPTIND_MIN 1
-#endif
-
int
main ()
{
if (!(optind == 1))
return 12;
}
+ /* Detect MacOS 10.5, AIX 7.1 bug. */
+ {
+ char *argv[3] = { "program", "-ab", NULL };
+ optind = OPTIND_MIN;
+ opterr = 0;
+ if (getopt (2, argv, "ab:") != 'a')
+ return 13;
+ if (getopt (2, argv, "ab:") != '?')
+ return 14;
+ if (optopt != 'b')
+ return 15;
+ if (optind != 2)
+ return 16;
+ }
return 0;
}
]])],
[gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no],
[case "$host_os" in
- mingw*) gl_cv_func_getopt_posix="guessing no";;
- *) gl_cv_func_getopt_posix="guessing yes";;
+ mingw*) gl_cv_func_getopt_posix="guessing no";;
+ darwin* | aix*) gl_cv_func_getopt_posix="guessing no";;
+ *) gl_cv_func_getopt_posix="guessing yes";;
esac
])
+ CPPFLAGS=$gl_save_CPPFLAGS
])
case "$gl_cv_func_getopt_posix" in
*no) gl_replace_getopt=yes ;;
# optstring is necessary for programs like m4 that have POSIX-mandated
# semantics for supporting options interspersed with files.
# Also, since getopt_long is a GNU extension, we require optind=0.
- gl_had_POSIXLY_CORRECT=${POSIXLY_CORRECT:+yes}
+ # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT;
+ # so take care to revert to the correct (non-)export state.
+dnl GNU Coding Standards currently allow awk but not env; besides, env
+dnl is ambiguous with environment values that contain newlines.
+ gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
+ case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in
+ xx) gl_had_POSIXLY_CORRECT=exported ;;
+ x) gl_had_POSIXLY_CORRECT=yes ;;
+ *) gl_had_POSIXLY_CORRECT= ;;
+ esac
POSIXLY_CORRECT=1
export POSIXLY_CORRECT
AC_RUN_IFELSE(
#include <stddef.h>
#include <string.h>
]], [[
+ int result = 0;
/* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw,
and fails on MacOS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
OSF/1 5.1, Solaris 10. */
myargv[2] = 0;
opterr = 0;
if (getopt (2, myargv, "+a") != '?')
- return 1;
+ result |= 1;
}
/* This code succeeds on glibc 2.8, mingw,
and fails on MacOS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
optind = 1;
if (getopt (4, argv, "p::") != 'p')
- return 2;
- if (optarg != NULL)
- return 3;
- if (getopt (4, argv, "p::") != -1)
- return 4;
- if (optind != 2)
- return 5;
+ result |= 2;
+ else if (optarg != NULL)
+ result |= 4;
+ else if (getopt (4, argv, "p::") != -1)
+ result |= 6;
+ else if (optind != 2)
+ result |= 8;
}
/* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */
{
char *argv[] = { "program", "foo", "-p", NULL };
optind = 0;
if (getopt (3, argv, "-p") != 1)
- return 6;
- if (getopt (3, argv, "-p") != 'p')
- return 7;
+ result |= 16;
+ else if (getopt (3, argv, "-p") != 'p')
+ result |= 32;
+ }
+ /* This code fails on glibc 2.11. */
+ {
+ char *argv[] = { "program", "-b", "-a", NULL };
+ optind = opterr = 0;
+ if (getopt (3, argv, "+:a:b") != 'b')
+ result |= 64;
+ else if (getopt (3, argv, "+:a:b") != ':')
+ result |= 64;
}
- return 0;
+ return result;
]])],
[gl_cv_func_getopt_gnu=yes],
[gl_cv_func_getopt_gnu=no],
*) gl_cv_func_getopt_gnu=yes;;
esac
])
- if test "$gl_had_POSIXLY_CORRECT" != yes; then
- AS_UNSET([POSIXLY_CORRECT])
- fi
+ case $gl_had_POSIXLY_CORRECT in
+ exported) ;;
+ yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;;
+ *) AS_UNSET([POSIXLY_CORRECT]) ;;
+ esac
])
if test "$gl_cv_func_getopt_gnu" = "no"; then
gl_replace_getopt=yes
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