(gl_GETOPT): Detect and reject the incompatible BSD

implementation of getopt_long.

diff --git a/m4/getopt.m4 b/m4/getopt.m4
index 5ab3570..c3cf647 100644 (file)
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 3
+# getopt.m4 serial 4

 dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General


@@ -38,6 +38,10 @@ AC_DEFUN([gl_GETOPT],
   AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
   AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
 
   AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
   AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
 

+  dnl BSD getopt_long uses an incompatible method to reset option processing,
+  dnl and (as of 2004-10-15) mishandles optional option-arguments.
+  AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
+

   if test -n "$GETOPT_H"; then
      gl_GETOPT_SUBSTITUTE
   fi
   if test -n "$GETOPT_H"; then
      gl_GETOPT_SUBSTITUTE
   fi