Support for library names with dots.

[gnulib.git] / m4 / onceonly.m4

diff --git a/m4/onceonly.m4 b/m4/onceonly.m4
index 4ab8fd0..b86700f 100644 (file)
--- a/m4/onceonly.m4
+++ b/m4/onceonly.m4
@@ -1,16 +1,14 @@
-# onceonly.m4 serial 3
-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 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 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'


@@ -21,6 +19,11 @@ dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to
 dnl empty, and the check will be inserted before the body of the AC_DEFUNed
 dnl function.
 
 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)
 
 dnl Autoconf version 2.57 or newer is recommended.
 AC_PREREQ(2.54)