-# getopt.m4 serial 32
+# getopt.m4 serial 38
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,
[
m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX])
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
- gl_GETOPT_IFELSE([
- gl_REPLACE_GETOPT
- ],
- [])
+ dnl Other modules can request the gnulib implementation of the getopt
+ dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS.
+ dnl argp.m4 does this.
+ m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [
+ gl_GETOPT_IFELSE([], [])
+ REPLACE_GETOPT=1
+ ], [
+ REPLACE_GETOPT=0
+ gl_GETOPT_IFELSE([
+ REPLACE_GETOPT=1
+ ],
+ [])
+ ])
+ if test $REPLACE_GETOPT = 1; then
+ dnl Arrange for getopt.h to be created.
+ gl_GETOPT_SUBSTITUTE_HEADER
+ dnl Arrange for unistd.h to include getopt.h.
+ GNULIB_UNISTD_H_GETOPT=1
+ fi
])
# Request a POSIX compliant getopt function with GNU extensions (such as
AC_REQUIRE([gl_FUNC_GETOPT_POSIX])
])
-# Request the gnulib implementation of the getopt functions unconditionally.
-# argp.m4 uses this.
-AC_DEFUN([gl_REPLACE_GETOPT],
-[
- dnl Arrange for getopt.h to be created.
- gl_GETOPT_SUBSTITUTE_HEADER
- dnl Arrange for unistd.h to include getopt.h.
- GNULIB_UNISTD_H_GETOPT=1
- dnl Arrange to compile the getopt implementation.
- AC_LIBOBJ([getopt])
- AC_LIBOBJ([getopt1])
- gl_PREREQ_GETOPT
-])
-
# emacs' configure.in uses this.
AC_DEFUN([gl_GETOPT_IFELSE],
[
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
gl_CHECK_NEXT_HEADERS([getopt.h])
- AC_CHECK_HEADERS_ONCE([getopt.h])
if test $ac_cv_header_getopt_h = yes; then
HAVE_GETOPT_H=1
else
AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
fi
- dnl BSD getopt_long uses an incompatible method to reset option processing.
- dnl Existence of the variable, in and of itself, is not a reason to replace
- dnl getopt, but knowledge of the variable is needed to determine how to
- dnl reset and whether a reset reparses the environment.
- dnl Solaris supports neither optreset nor optind=0, but keeps no state that
- dnl needs a reset beyond setting optind=1; detect Solaris by getopt_clip.
- if test -z "$gl_replace_getopt"; then
- AC_CHECK_DECLS([optreset], [],
- [AC_CHECK_DECLS([getopt_clip], [], [],
- [[#include <getopt.h>]])
- ],
- [[#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
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=$gl_optind_min"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
-#if !HAVE_DECL_OPTRESET && !HAVE_DECL_GETOPT_CLIP
-# define OPTIND_MIN 0
-#else
-# define OPTIND_MIN 1
-#endif
-
int
main ()
{
{
- int argc = 0;
- char *argv[10];
+ static char program[] = "program";
+ static char a[] = "-a";
+ static char foo[] = "foo";
+ static char bar[] = "bar";
+ char *argv[] = { program, a, foo, bar, NULL };
int c;
- argv[argc++] = "program";
- argv[argc++] = "-a";
- argv[argc++] = "foo";
- argv[argc++] = "bar";
- argv[argc] = NULL;
optind = OPTIND_MIN;
opterr = 0;
- c = getopt (argc, argv, "ab");
+ c = getopt (4, argv, "ab");
if (!(c == 'a'))
return 1;
- c = getopt (argc, argv, "ab");
+ c = getopt (4, argv, "ab");
if (!(c == -1))
return 2;
if (!(optind == 2))
}
/* Some internal state exists at this point. */
{
- int argc = 0;
- char *argv[10];
+ static char program[] = "program";
+ static char donald[] = "donald";
+ static char p[] = "-p";
+ static char billy[] = "billy";
+ static char duck[] = "duck";
+ static char a[] = "-a";
+ static char bar[] = "bar";
+ char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
int c;
- argv[argc++] = "program";
- argv[argc++] = "donald";
- argv[argc++] = "-p";
- argv[argc++] = "billy";
- argv[argc++] = "duck";
- argv[argc++] = "-a";
- argv[argc++] = "bar";
- argv[argc] = NULL;
optind = OPTIND_MIN;
opterr = 0;
- c = getopt (argc, argv, "+abp:q:");
+ c = getopt (7, argv, "+abp:q:");
if (!(c == -1))
return 4;
if (!(strcmp (argv[0], "program") == 0))
}
/* Detect MacOS 10.5, AIX 7.1 bug. */
{
- char *argv[3] = { "program", "-ab", NULL };
+ static char program[] = "program";
+ static char ab[] = "-ab";
+ char *argv[3] = { program, ab, NULL };
optind = OPTIND_MIN;
opterr = 0;
if (getopt (2, argv, "ab:") != 'a')
*) gl_cv_func_getopt_posix="guessing yes";;
esac
])
+ CPPFLAGS=$gl_save_CPPFLAGS
])
case "$gl_cv_func_getopt_posix" in
*no) gl_replace_getopt=yes ;;
[AC_LANG_PROGRAM([[#include <getopt.h>
#include <stddef.h>
#include <string.h>
+ ]GL_NOCRASH[
]], [[
int result = 0;
+
+ nocrash_init();
+
/* 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. */
{
- char *myargv[3];
- myargv[0] = "conftest";
- myargv[1] = "-+";
- myargv[2] = 0;
+ static char conftest[] = "conftest";
+ static char plus[] = "-+";
+ char *argv[3] = { conftest, plus, NULL };
opterr = 0;
- if (getopt (2, myargv, "+a") != '?')
+ if (getopt (2, argv, "+a") != '?')
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,
IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x. */
{
- char *argv[] = { "program", "-p", "foo", "bar", NULL };
+ static char program[] = "program";
+ static char p[] = "-p";
+ static char foo[] = "foo";
+ static char bar[] = "bar";
+ char *argv[] = { program, p, foo, bar, NULL };
optind = 1;
if (getopt (4, argv, "p::") != 'p')
}
/* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */
{
- char *argv[] = { "program", "foo", "-p", NULL };
+ static char program[] = "program";
+ static char foo[] = "foo";
+ static char p[] = "-p";
+ char *argv[] = { program, foo, p, NULL };
optind = 0;
if (getopt (3, argv, "-p") != 1)
result |= 16;
}
/* This code fails on glibc 2.11. */
{
- char *argv[] = { "program", "-b", "-a", NULL };
+ static char program[] = "program";
+ static char b[] = "-b";
+ static char a[] = "-a";
+ 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;
}
+ /* This code dumps core on glibc 2.14. */
+ {
+ static char program[] = "program";
+ static char w[] = "-W";
+ static char dummy[] = "dummy";
+ char *argv[] = { program, w, dummy, NULL };
+ optind = opterr = 1;
+ if (getopt (3, argv, "W;") != 'W')
+ result |= 128;
+ }
return result;
]])],
[gl_cv_func_getopt_gnu=yes],
HCoop / bpt / emacs.git / blobdiff