Merge gnulib getopt implementation into Emacs.

* Makefile.in (AUTOCONF_INPUTS): New macro.
($(srcdir)/configure, $(srcdir)/src/stamp-h.in): Depend on it,
so that these files also depend on m4/getopt.m4.
* configure.in: Configure getopt by including m4/getopt.m4,
and configuring a getopt replacement if necessary.
* make-dist: Add m4 subdirectory.  Unlink lib-src/getopt.h.
* m4/getopt.m4: New file.

* lib-src/Makefile.in (mostlyclean): Remove getopt.h, getopt.h-t.
(GETOPT_H): New macro, from gnulib.
(getopt.h): New rule, from gnulib.
(GETOPTOBJS): Now autoconfigured.
(GETOPTDEPS): getopt.h is now autoconfigured.
(getopt.o, getopt1.o): Depend on $(GETOPT_H), not ${srcdir}/getopt.h.
(getopt.o): Depend on ${srcdir}/gettext.h.
(movemail.o): Depend on $(GETOPT_H).
* lib-src/getopt.c, lib-src/getopt1.c: Sync from gnulib.
* lib-src/getopt_.h, lib-src/getopt_int.h, lib-src/gettext.h:
New files, from gnulib.
* lib-src/getopt.h: Removed (now is getopt_.h).

* nt/inc/gettext.h: Remove; no longer needed now that
lib-src/gettext.h exists.

* src/s/cygwin.h (C_SWITCH_SYSTEM): Remove, since gettext.h is
now part of lib-src.

1 files changed, 29 insertions, 53 deletions

diff --git a/lib-src/getopt1.c b/lib-src/getopt1.c
index 4ec1e50b83..5acd2245af 100644
--- a/lib-src/getopt1.c
+++ b/lib-src/getopt1.c
@@ -1,5 +1,5 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
+   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004
      Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -26,36 +26,10 @@
 #else
 # include "getopt.h"
 #endif
-
-#if !defined __STDC__ || !__STDC__
-/* This is a separate conditional since some stdc systems
-   reject `defined (const)'.  */
-#ifndef const
-#define const
-#endif
-#endif
+#include "getopt_int.h"
 
 #include <stdio.h>
 
-/* Comment out all this code if we are using the GNU C Library, and are not
-   actually compiling the library itself.  This code is part of the GNU C
-   Library, but also included in many other GNU distributions.  Compiling
-   and linking in this code is a waste when using the GNU C library
-   (especially if it is a shared library).  Rather than having every GNU
-   program understand `configure --with-gnu-libc' and omit the object files,
-   it is simpler to just do this in the source for each such file.  */
-
-#define GETOPT_INTERFACE_VERSION 2
-#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
-#include <gnu-versions.h>
-#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
-#define ELIDE_CODE
-#endif
-#endif
-
-#ifndef ELIDE_CODE
-
-
 /* This needs to come after some library #include
    to get __GNU_LIBRARY__ defined.  */
 #ifdef __GNU_LIBRARY__
@@ -67,14 +41,20 @@
 #endif
 
 int
-getopt_long (argc, argv, options, long_options, opt_index)
-     int argc;
-     char *const *argv;
-     const char *options;
-     const struct option *long_options;
-     int *opt_index;
+getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
+	     const struct option *long_options, int *opt_index)
 {
-  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+  return _getopt_internal (argc, (char **) argv, options, long_options,
+			   opt_index, 0, 0);
+}
+
+int
+_getopt_long_r (int argc, char **argv, const char *options,
+		const struct option *long_options, int *opt_index,
+		struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+			     0, 0, d);
 }
 
 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
@@ -83,31 +63,30 @@ getopt_long (argc, argv, options, long_options, opt_index)
    instead.  */
 
 int
-getopt_long_only (argc, argv, options, long_options, opt_index)
-     int argc;
-     char *const *argv;
-     const char *options;
-     const struct option *long_options;
-     int *opt_index;
+getopt_long_only (int argc, char *__getopt_argv_const *argv,
+		  const char *options,
+		  const struct option *long_options, int *opt_index)
 {
-  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
+  return _getopt_internal (argc, (char **) argv, options, long_options,
+			   opt_index, 1, 0);
 }
 
-# ifdef _LIBC
-libc_hidden_def (getopt_long)
-libc_hidden_def (getopt_long_only)
-# endif
+int
+_getopt_long_only_r (int argc, char **argv, const char *options,
+		     const struct option *long_options, int *opt_index,
+		     struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+			     1, 0, d);
+}
 
-#endif	/* Not ELIDE_CODE.  */
 
 #ifdef TEST
 
 #include <stdio.h>
 
 int
-main (argc, argv)
-     int argc;
-     char **argv;
+main (int argc, char **argv)
 {
   int c;
   int digit_optind = 0;
@@ -193,6 +172,3 @@ main (argc, argv)
 }
 
 #endif /* TEST */
-
-/* arch-tag: 28a5c558-b0c0-4bff-b5bc-e2e20291d4b6
-   (do not change this comment) */