X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetopt.m4;h=c0a73b2cb803aeb637f7f2db1b503e5e55b4da14;hb=02fbe33cbedc8062f038e4492beca6d149e75ace;hp=dcd333ba3a13bb36bd703a24400e1e3d003fa52d;hpb=f092adcaf2b62217175de3cc53c92445a745313e;p=gnulib.git

diff --git a/m4/getopt.m4 b/m4/getopt.m4
index dcd333ba3..c0a73b2cb 100644
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,44 +1,83 @@
-# getopt.m4 serial 6
-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 Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# getopt.m4 serial 13
+dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 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 your code should
+# rather than vanilla POSIX getopt.  This means your code should
 # always include <getopt.h> for the getopt prototypes.
 
 AC_DEFUN([gl_GETOPT_SUBSTITUTE],
 [
-  GETOPT_H=getopt.h
   AC_LIBOBJ([getopt])
   AC_LIBOBJ([getopt1])
+  gl_GETOPT_SUBSTITUTE_HEADER
+  gl_PREREQ_GETOPT
+])
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+  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],
+AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 [
-  gl_PREREQ_GETOPT
-
   if test -z "$GETOPT_H"; then
-    GETOPT_H=
     AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+  fi
+
+  if test -z "$GETOPT_H"; then
     AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=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.
+  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>])
+  fi
 
-    if test -n "$GETOPT_H"; then
-      gl_GETOPT_SUBSTITUTE
+  dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+  dnl option string (as of 2005-05-05).
+  if test -z "$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
     fi
   fi
 ])
 
+AC_DEFUN([gl_GETOPT_IFELSE],
+[
+  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+  AS_IF([test -n "$GETOPT_H"], [$1], [$2])
+])
+
+AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
+
 # Prerequisites of lib/getopt*.
-AC_DEFUN([gl_PREREQ_GETOPT], [:])
+AC_DEFUN([gl_PREREQ_GETOPT],
+[
+  AC_CHECK_DECLS_ONCE([getenv])
+])