-# onceonly.m4 serial 3 (gettext-0.12)
-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.
+# onceonly.m4 serial 5 (gettext-0.15)
+dnl Copyright (C) 2002-2003, 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.
dnl This file defines some "once only" variants of standard autoconf macros.
-dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS
-dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS
-dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS
-dnl AC_REQUIRE([AC_HEADER_STDC]) like AC_HEADER_STDC
+dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS
+dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS
+dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS
+dnl AC_REQUIRE([AC_FUNC_STRCOLL]) like AC_FUNC_STRCOLL
dnl The advantage is that the check for each of the headers/functions/decls
dnl will be put only once into the 'configure' file. It keeps the size of
dnl the 'configure' file down, and avoids redundant output when 'configure'
dnl empty, and the check will be inserted before the body of the AC_DEFUNed
dnl function.
+dnl This file is only needed in autoconf <= 2.59. Newer versions of autoconf
+dnl have this macro built-in. But about AC_CHECK_DECLS_ONCE: note that in
+dnl autoconf >= 2.60 the symbol separator is a comma, whereas here it is
+dnl whitespace.
+
dnl Autoconf version 2.57 or newer is recommended.
AC_PREREQ(2.54)
projects / gnulib.git / blobdiff