* m4/include_next.m4 (gl_INCLUDE_NEXT): Define and AC_SUBST

[gnulib.git] / m4 / strnlen.m4

diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
index 89cca67..0e2815b 100644 (file)
--- a/m4/strnlen.m4
+++ b/m4/strnlen.m4
@@ -1,16 +1,20 @@
-# strnlen.m4 serial 2
-dnl Copyright (C) 2002-2003 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.
+# strnlen.m4 serial 8
+dnl Copyright (C) 2002-2003, 2005-2007 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.
 
 AC_DEFUN([gl_FUNC_STRNLEN],
 [
   dnl Persuade glibc <string.h> to declare strnlen().
   AC_REQUIRE([AC_GNU_SOURCE])
 
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_CHECK_DECLS_ONCE([strnlen])
+  if test $ac_cv_have_decl_strnlen = no; then
+    HAVE_DECL_STRNLEN=0
+  fi
+
   AC_FUNC_STRNLEN
   if test $ac_cv_func_strnlen_working = no; then
     # This is necessary because automake-1.6.1 doens't understand
@@ -24,9 +28,4 @@ AC_DEFUN([gl_FUNC_STRNLEN],
 ])
 
 # Prerequisites of lib/strnlen.c.
-AC_DEFUN([gl_PREREQ_STRNLEN], [
-  AC_REQUIRE([AC_HEADER_STDC])
-  AC_CHECK_HEADERS_ONCE(memory.h string.h)
-  AC_CHECK_DECLS(memchr)
-])
-
+AC_DEFUN([gl_PREREQ_STRNLEN], [:])