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authorJim Meyering <meyering@apache.org>2008-12-16 09:27:45 +0000
committerJim Meyering <meyering@apache.org>2008-12-16 09:27:45 +0000
commitc577198e734987592394ccbbd26c5a73ea219258 (patch)
tree5f7a0fafb8756c59e9262c3cf63977f9439ca624 /cpp
parent15a5e3bf313425aea3455ab1a94681095d0f45c9 (diff)
downloadqpid-python-c577198e734987592394ccbbd26c5a73ea219258.tar.gz
avoid bootstrap failure when using newer autoconf
* qpid/cpp/m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Define only if undefined. git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@726999 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'cpp')
-rw-r--r--cpp/m4/extensions.m47
1 files changed, 4 insertions, 3 deletions
diff --git a/cpp/m4/extensions.m4 b/cpp/m4/extensions.m4
index 143a9e5403..fe7398b046 100644
--- a/cpp/m4/extensions.m4
+++ b/cpp/m4/extensions.m4
@@ -1,7 +1,7 @@
-# serial 4 -*- Autoconf -*-
+# serial 5 -*- Autoconf -*-
# Enable extensions on systems that normally disable them.
-# Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006, 2008 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
@@ -16,6 +16,7 @@
# ------------------------
# Enable extensions on systems that normally disable them,
# typically due to standards-conformance issues.
+m4_ifdef([AC_USE_SYSTEM_EXTENSIONS], [], [
AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
[
AC_BEFORE([$0], [AC_COMPILE_IFELSE])
@@ -48,7 +49,7 @@ AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
AC_DEFINE([__EXTENSIONS__])
AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
AC_DEFINE([_TANDEM_SOURCE])
-])
+])])
# gl_USE_SYSTEM_EXTENSIONS
# ------------------------