-# getopt.m4 serial 14
-dnl Copyright (C) 2002-2006, 2008 Free Software Foundation, Inc.
+# getopt.m4 serial 31
+dnl Copyright (C) 2002-2006, 2008-2010 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.
-# The getopt module assume you want GNU getopt, with getopt_long etc,
-# rather than vanilla POSIX getopt. This means your code should
-# always include <getopt.h> for the getopt prototypes.
+# Request a POSIX compliant getopt function.
+AC_DEFUN([gl_FUNC_GETOPT_POSIX],
+[
+ m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX])
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ gl_GETOPT_IFELSE([
+ gl_REPLACE_GETOPT
+ ],
+ [])
+])
+
+# Request a POSIX compliant getopt function with GNU extensions (such as
+# options with optional arguments) and the functions getopt_long,
+# getopt_long_only.
+AC_DEFUN([gl_FUNC_GETOPT_GNU],
+[
+ m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU])
+
+ AC_REQUIRE([gl_FUNC_GETOPT_POSIX])
+])
-AC_DEFUN([gl_GETOPT_SUBSTITUTE],
+# 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_GETOPT_SUBSTITUTE_HEADER
gl_PREREQ_GETOPT
])
-AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+# emacs' configure.in uses this.
+AC_DEFUN([gl_GETOPT_IFELSE],
[
- GETOPT_H=getopt.h
- AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
- [Define to rpl_ if the getopt replacement functions and variables
- should be used.])
- AC_SUBST([GETOPT_H])
+ AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+ AS_IF([test -n "$gl_replace_getopt"], [$1], [$2])
])
+# Determine whether to replace the entire getopt facility.
AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
[
- if test -z "$GETOPT_H"; then
- AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+ 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 $ac_cv_header_getopt_h = yes; then
+ HAVE_GETOPT_H=1
+ else
+ HAVE_GETOPT_H=0
+ fi
+ AC_SUBST([HAVE_GETOPT_H])
+
+ gl_replace_getopt=
+
+ dnl Test whether <getopt.h> is available.
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
+ fi
+
+ dnl Test whether the function getopt_long is available.
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
fi
- if test -z "$GETOPT_H"; then
- AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
+ 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 "$gl_replace_getopt"; then
+ AC_CHECK_DECLS([optreset], [],
+ [AC_CHECK_DECLS([getopt_clip], [], [],
+ [[#include <getopt.h>]])
+ ],
+ [[#include <getopt.h>]])
fi
- dnl BSD getopt_long uses an incompatible method to reset option processing,
- dnl and (as of 2004-10-15) mishandles optional option-arguments.
- if test -z "$GETOPT_H"; then
- AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
+ 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 "$gl_replace_getopt"; then
+ AC_CACHE_CHECK([whether getopt is POSIX compatible],
+ [gl_cv_func_getopt_posix],
+ [
+ dnl This test fails on mingw and succeeds on many other platforms.
+ AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !HAVE_DECL_OPTRESET && !HAVE_DECL_GETOPT_CLIP
+# define OPTIND_MIN 0
+#else
+# define OPTIND_MIN 1
+#endif
+
+int
+main ()
+{
+ {
+ int argc = 0;
+ char *argv[10];
+ int c;
+
+ argv[argc++] = "program";
+ argv[argc++] = "-a";
+ argv[argc++] = "foo";
+ argv[argc++] = "bar";
+ argv[argc] = NULL;
+ optind = OPTIND_MIN;
+ opterr = 0;
+
+ c = getopt (argc, argv, "ab");
+ if (!(c == 'a'))
+ return 1;
+ c = getopt (argc, argv, "ab");
+ if (!(c == -1))
+ return 2;
+ if (!(optind == 2))
+ return 3;
+ }
+ /* Some internal state exists at this point. */
+ {
+ int argc = 0;
+ char *argv[10];
+ int c;
+
+ argv[argc++] = "program";
+ argv[argc++] = "donald";
+ argv[argc++] = "-p";
+ argv[argc++] = "billy";
+ argv[argc++] = "duck";
+ argv[argc++] = "-a";
+ argv[argc++] = "bar";
+ argv[argc] = NULL;
+ optind = OPTIND_MIN;
+ opterr = 0;
+
+ c = getopt (argc, argv, "+abp:q:");
+ if (!(c == -1))
+ return 4;
+ if (!(strcmp (argv[0], "program") == 0))
+ return 5;
+ if (!(strcmp (argv[1], "donald") == 0))
+ return 6;
+ if (!(strcmp (argv[2], "-p") == 0))
+ return 7;
+ if (!(strcmp (argv[3], "billy") == 0))
+ return 8;
+ if (!(strcmp (argv[4], "duck") == 0))
+ return 9;
+ if (!(strcmp (argv[5], "-a") == 0))
+ return 10;
+ if (!(strcmp (argv[6], "bar") == 0))
+ return 11;
+ if (!(optind == 1))
+ return 12;
+ }
+ /* Detect MacOS 10.5, AIX 7.1 bug. */
+ {
+ char *argv[3] = { "program", "-ab", NULL };
+ optind = OPTIND_MIN;
+ opterr = 0;
+ if (getopt (2, argv, "ab:") != 'a')
+ return 13;
+ if (getopt (2, argv, "ab:") != '?')
+ return 14;
+ if (optopt != 'b')
+ return 15;
+ if (optind != 2)
+ return 16;
+ }
+
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no],
+ [case "$host_os" in
+ mingw*) gl_cv_func_getopt_posix="guessing no";;
+ darwin* | aix*) gl_cv_func_getopt_posix="guessing no";;
+ *) gl_cv_func_getopt_posix="guessing yes";;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_getopt_posix" in
+ *no) gl_replace_getopt=yes ;;
+ esac
fi
- dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
- dnl option string (as of 2005-05-05).
- if test -z "$GETOPT_H"; then
- AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
- [AC_RUN_IFELSE(
- [AC_LANG_PROGRAM([[#include <getopt.h>]],
- [[
- char *myargv[3];
- myargv[0] = "conftest";
- myargv[1] = "-+";
- myargv[2] = 0;
- return getopt (2, myargv, "+a") != '?';
- ]])],
- [gl_cv_func_gnu_getopt=yes],
- [gl_cv_func_gnu_getopt=no],
- [dnl cross compiling - pessimistically guess based on decls
- dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
- dnl option string (as of 2005-05-05).
- AC_CHECK_DECL([getopt_clip],
- [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
- [#include <getopt.h>])])])
- if test "$gl_cv_func_gnu_getopt" = "no"; then
- GETOPT_H=getopt.h
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu],
+ [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the
+ # 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.
+ # 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(
+ [AC_LANG_PROGRAM([[#include <getopt.h>
+ #include <stddef.h>
+ #include <string.h>
+ ]], [[
+ /* 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;
+ opterr = 0;
+ if (getopt (2, myargv, "+a") != '?')
+ return 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 };
+
+ 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;
+ }
+ /* 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;
+ }
+ /* This code fails on glibc 2.11. */
+ {
+ char *argv[] = { "program", "-b", "-a", NULL };
+ optind = opterr = 0;
+ if (getopt (3, argv, "+:a:b") != 'b')
+ return 8;
+ if (getopt (3, argv, "+:a:b") != ':')
+ return 9;
+ }
+ return 0;
+ ]])],
+ [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
+ ])
+ 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
fi
fi
])
-AC_DEFUN([gl_GETOPT_IFELSE],
+# emacs' configure.in uses this.
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
[
- AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
- AS_IF([test -n "$GETOPT_H"], [$1], [$2])
+ GETOPT_H=getopt.h
+ AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+ [Define to rpl_ if the getopt replacement functions and variables
+ should be used.])
+ AC_SUBST([GETOPT_H])
])
-AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
-
# Prerequisites of lib/getopt*.
+# emacs' configure.in uses this.
AC_DEFUN([gl_PREREQ_GETOPT],
[
AC_CHECK_DECLS_ONCE([getenv])
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