1 files changed, 37 insertions, 4 deletions

diff --git a/gl/m4/getopt.m4 b/gl/m4/getopt.m4
index a19805e..5b211e5 100644
--- a/gl/m4/getopt.m4
+++ b/gl/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 24
+# getopt.m4 serial 28
 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,
@@ -79,8 +79,13 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
   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 $gl_getopt_required = GNU; then
-    AC_CHECK_DECLS([optreset], [], [],
+  dnl Solaris supports neither optreset nor optind=0, but keeps no state that
+  dnl needs a reset beyond setting optind=1; detect Solaris by getopt_clip.
+  if test -z "$gl_replace_getopt"; then
+    AC_CHECK_DECLS([optreset], [],
+      [AC_CHECK_DECLS([getopt_clip], [], [],
+        [[#include <getopt.h>]])
+      ],
       [[#include <getopt.h>]])
   fi
 
@@ -89,6 +94,10 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
   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],
@@ -99,7 +108,7 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 #include <stdlib.h>
 #include <string.h>
 
-#if !HAVE_DECL_OPTRESET
+#if !HAVE_DECL_OPTRESET && !HAVE_DECL_GETOPT_CLIP
 # define OPTIND_MIN 0
 #else
 # define OPTIND_MIN 1
@@ -167,6 +176,20 @@ main ()
     if (!(optind == 1))
       return 12;
   }
+  /* Detect MacOS 10.5 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;
 }
@@ -174,6 +197,7 @@ main ()
           [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*) gl_cv_func_getopt_posix="guessing no";;
              *)      gl_cv_func_getopt_posix="guessing yes";;
            esac
           ])
@@ -234,6 +258,15 @@ main ()
                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],