-# stpncpy.m4 serial 2
-dnl Copyright (C) 2002-2003, 2005 Free Software Foundation, Inc.
+# stpncpy.m4 serial 10
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
+dnl 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_STPNCPY],
[
dnl Persuade glibc <string.h> to declare stpncpy().
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ dnl The stpncpy() declaration in lib/string.in.h uses 'restrict'.
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
dnl Both glibc and AIX (4.3.3, 5.1) have an stpncpy() function
dnl declared in <string.h>. Its side effects are the same as those
dnl in AIX: dest + max(0,n-1)
dnl Only the glibc return value is useful in practice.
- AC_CACHE_CHECK([for working stpncpy], gl_cv_func_stpncpy, [
+ AC_CACHE_CHECK([for working stpncpy], [gl_cv_func_stpncpy], [
AC_TRY_RUN([
#include <stdlib.h>
+#include <string.h> /* for strcpy */
+/* The stpncpy prototype is missing in <string.h> on AIX 4. */
extern char *stpncpy (char *dest, const char *src, size_t n);
int main () {
const char *src = "Hello";
], gl_cv_func_stpncpy=yes, gl_cv_func_stpncpy=no)])])
if test $gl_cv_func_stpncpy = yes; then
- AC_DEFINE(HAVE_STPNCPY, 1,
+ AC_DEFINE([HAVE_STPNCPY], [1],
[Define if you have the stpncpy() function and it works.])
else
- AC_DEFINE([stpncpy], [gnu_stpncpy],
- [Define to a replacement function name for stpncpy().])
+ HAVE_STPNCPY=0
AC_LIBOBJ([stpncpy])
gl_PREREQ_STPNCPY
fi
AC_DEFUN([gl_PREREQ_STPNCPY], [
:
])
-