-# getopt.m4 serial 42
+# getopt.m4 serial 43
dnl Copyright (C) 2002-2006, 2008-2012 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
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 '+'
AC_CACHE_CHECK([whether getopt is POSIX compatible],
[gl_cv_func_getopt_posix],
[
- dnl BSD getopt_long uses an incompatible method to reset option
- dnl processing. Existence of the optreset 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_LINK_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([[
+ dnl Merging these three different test programs into a single one
+ dnl would require a reset mechanism. On BSD systems, it can be done
+ dnl through 'optreset'; on some others (glibc), it can be done by
+ dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1,
+ dnl Solaris 9, musl libc), there is no such mechanism.
+ if test $cross_compiling = no; then
+ dnl Sanity check. Succeeds everywhere (except on MSVC,
+ dnl which lacks <unistd.h> and getopt() entirely).
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int
main ()
{
- {
- static char program[] = "program";
- static char a[] = "-a";
- static char foo[] = "foo";
- static char bar[] = "bar";
- char *argv[] = { program, a, foo, bar, NULL };
- int c;
-
- optind = OPTIND_MIN;
- opterr = 0;
+ static char program[] = "program";
+ static char a[] = "-a";
+ static char foo[] = "foo";
+ static char bar[] = "bar";
+ char *argv[] = { program, a, foo, bar, NULL };
+ int c;
- c = getopt (4, argv, "ab");
- if (!(c == 'a'))
- return 1;
- c = getopt (4, argv, "ab");
- if (!(c == -1))
- return 2;
- if (!(optind == 2))
- return 3;
- }
- /* Some internal state exists at this point. */
- {
- static char program[] = "program";
- static char donald[] = "donald";
- static char p[] = "-p";
- static char billy[] = "billy";
- static char duck[] = "duck";
- static char a[] = "-a";
- static char bar[] = "bar";
- char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
- int c;
+ c = getopt (4, argv, "ab");
+ if (!(c == 'a'))
+ return 1;
+ c = getopt (4, argv, "ab");
+ if (!(c == -1))
+ return 2;
+ if (!(optind == 2))
+ return 3;
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=maybe],
+ [gl_cv_func_getopt_posix=no])
+ if test $gl_cv_func_getopt_posix = maybe; then
+ dnl Sanity check with '+'. Succeeds everywhere (except on MSVC,
+ dnl which lacks <unistd.h> and getopt() entirely).
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
- optind = OPTIND_MIN;
- opterr = 0;
+int
+main ()
+{
+ static char program[] = "program";
+ static char donald[] = "donald";
+ static char p[] = "-p";
+ static char billy[] = "billy";
+ static char duck[] = "duck";
+ static char a[] = "-a";
+ static char bar[] = "bar";
+ char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
+ int c;
- c = getopt (7, argv, "+abp:q:");
- if (!(c == -1))
- return 4;
- if (!(strcmp (argv[0], "program") == 0))
- return 5;
- if (!(strcmp (argv[1], "donald") == 0))
- return 6;
- if (!(strcmp (argv[2], "-p") == 0))
- return 7;
- if (!(strcmp (argv[3], "billy") == 0))
- return 8;
- if (!(strcmp (argv[4], "duck") == 0))
- return 9;
- if (!(strcmp (argv[5], "-a") == 0))
- return 10;
- if (!(strcmp (argv[6], "bar") == 0))
- return 11;
- if (!(optind == 1))
- return 12;
- }
- /* Detect Mac OS X 10.5, AIX 7.1 bug. */
- {
- static char program[] = "program";
- static char ab[] = "-ab";
- 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;
- }
+ c = getopt (7, argv, "+abp:q:");
+ if (!(c == -1))
+ return 4;
+ if (!(strcmp (argv[0], "program") == 0))
+ return 5;
+ if (!(strcmp (argv[1], "donald") == 0))
+ return 6;
+ if (!(strcmp (argv[2], "-p") == 0))
+ return 7;
+ if (!(strcmp (argv[3], "billy") == 0))
+ return 8;
+ if (!(strcmp (argv[4], "duck") == 0))
+ return 9;
+ if (!(strcmp (argv[5], "-a") == 0))
+ return 10;
+ if (!(strcmp (argv[6], "bar") == 0))
+ return 11;
+ if (!(optind == 1))
+ return 12;
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=maybe],
+ [gl_cv_func_getopt_posix=no])
+ fi
+ if test $gl_cv_func_getopt_posix = maybe; then
+ dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug.
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+int
+main ()
+{
+ static char program[] = "program";
+ static char ab[] = "-ab";
+ char *argv[3] = { program, ab, NULL };
+ if (getopt (2, argv, "ab:") != 'a')
+ return 13;
+ if (getopt (2, argv, "ab:") != '?')
+ return 14;
+ if (optopt != 'b')
+ return 15;
+ if (optind != 2)
+ return 16;
return 0;
}
]])],
- [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no],
- [case "$host_os" in
- mingw*) gl_cv_func_getopt_posix="guessing no";;
- darwin* | aix*) gl_cv_func_getopt_posix="guessing no";;
- *) gl_cv_func_getopt_posix="guessing yes";;
- esac
- ])
- CPPFLAGS=$gl_save_CPPFLAGS
+ [gl_cv_func_getopt_posix=yes],
+ [gl_cv_func_getopt_posix=no])
+ fi
+ else
+ case "$host_os" in
+ darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
+ *) gl_cv_func_getopt_posix="guessing yes";;
+ esac
+ fi
])
case "$gl_cv_func_getopt_posix" in
*no) gl_replace_getopt=yes ;;
]])],
[gl_cv_func_getopt_gnu=yes],
[gl_cv_func_getopt_gnu=no],
- [dnl Cross compiling. Guess based on host and declarations.
- case $host_os:$ac_cv_have_decl_optreset in
- *-gnu*:* | mingw*:*) gl_cv_func_getopt_gnu=no;;
- *:yes) gl_cv_func_getopt_gnu=no;;
- *) gl_cv_func_getopt_gnu=yes;;
- esac
+ [dnl Cross compiling. Assume the worst, even on glibc platforms.
+ gl_cv_func_getopt_gnu="guessing no"
])
case $gl_had_POSIXLY_CORRECT in
exported) ;;
*) AS_UNSET([POSIXLY_CORRECT]) ;;
esac
])
- if test "$gl_cv_func_getopt_gnu" = "no"; then
+ if test "$gl_cv_func_getopt_gnu" != yes; then
gl_replace_getopt=yes
else
AC_CACHE_CHECK([for working GNU getopt_long function],
projects / gnulib.git / commitdiff