[Bug-gnulib] strdup: fix warnings

[Simon Josefsson]

strdup.h generated warnings on platforms that have strdup, since the
AC_CHECK_DECLS(strdup) call was only invoked when strdup was missing.
This fixes both the m4, and the header file.

Perhaps it is bad style to always invoke gl_PREREQ_*, I'm not sure
about that.

2004-08-03  Simon Josefsson  <address@hidden>

        * strdup.h: Only use HAVE_DECL_STRDUP if defined.

2004-08-03  Simon Josefsson  <address@hidden>

        * strdup.m4: Always run gl_PREREQ_STRDUP, since strdup.h need it.

Index: strdup.h
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/strdup.h,v
retrieving revision 1.1
diff -u -p -u -w -r1.1 strdup.h
--- strdup.h    25 Feb 2004 19:46:30 -0000      1.1
+++ strdup.h    3 Aug 2004 21:48:08 -0000
@@ -21,7 +21,7 @@
 /* Get strdup declaration, if available.  */
 #include <string.h>
 
-#if !HAVE_DECL_STRDUP && !defined strdup
+#if defined HAVE_DECL_STRDUP && !HAVE_DECL_STRDUP && !defined strdup
 /* Duplicate S, returning an identical malloc'd string.  */
 extern char *strdup (const char *s);
 #endif
Index: strdup.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/strdup.m4,v
retrieving revision 1.3
diff -u -p -u -w -r1.3 strdup.m4
--- strdup.m4   25 Feb 2004 19:39:07 -0000      1.3
+++ strdup.m4   3 Aug 2004 21:47:26 -0000
@@ -1,4 +1,4 @@
-# strdup.m4 serial 3
+# strdup.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
@@ -9,9 +9,7 @@ dnl the same distribution terms as the r
 AC_DEFUN([gl_FUNC_STRDUP],
 [
   AC_REPLACE_FUNCS(strdup)
-  if test $ac_cv_func_strdup = no; then
     gl_PREREQ_STRDUP
-  fi
 ])
 
 # Prerequisites of lib/strdup.h and lib/strdup.c.