* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Do not override the results

of gl_GETOPT_SUBSTITUTE.  That way, if both gl_GETOPT_SUBSTITUTE
and gl_GETOPT are both invoked via different paths (as happens
with GNU tar CVS because it uses both argp and getopt), the former
wins.

diff --git a/m4/ChangeLog b/m4/ChangeLog
index a0ca3b2..78a7469 100644 (file)
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,11 @@
+2005-08-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+       * getopt.m4 (gl_GETOPT_CHECK_HEADERS): Do not override the results
+       of gl_GETOPT_SUBSTITUTE.  That way, if both gl_GETOPT_SUBSTITUTE
+       and gl_GETOPT are both invoked via different paths (as happens
+       with GNU tar CVS because it uses both argp and getopt), the former
+       wins.
+
 2005-08-16  Bruno Haible  <bruno@clisp.org>
 
        * strcase.m4 (gl_FUNC_STRCASECMP): Use the replacement function always.

diff --git a/m4/getopt.m4 b/m4/getopt.m4
index 051c649..6b98782 100644 (file)
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 10
+# getopt.m4 serial 11
 dnl Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -27,8 +27,10 @@ AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
 
 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 [
-  GETOPT_H=
-  AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+  if test -z "$GETOPT_H"; then
+    AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+  fi
+
   if test -z "$GETOPT_H"; then
     AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
   fi