[Python-checkins] r74072 - python/trunk/configure.in

[alexandre.vassalotti]

Author: alexandre.vassalotti
Date: Sat Jul 18 02:31:06 2009
New Revision: 74072

Log:
Add a check to ensure the correct autoconf version is used
for generating the configure script.

Original idea by Martin von Löwis.


Modified:
   python/trunk/configure.in

Modified: python/trunk/configure.in
==============================================================================
--- python/trunk/configure.in	(original)
+++ python/trunk/configure.in	Sat Jul 18 02:31:06 2009
@@ -6,8 +6,16 @@
 # Set VERSION so we only need to edit in one place (i.e., here)
 m4_define(PYTHON_VERSION, 2.7)
 
+dnl Some m4 magic to ensure that the configure script is generated
+dnl by the correct autoconf version.
+m4_define([version_required],
+[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]), [$1]), 0,
+       [],
+       [m4_fatal([Autoconf version $1 is required for Python], 63)])
+])
+version_required(2.61)
+
 AC_REVISION($Revision$)
-AC_PREREQ(2.61)
 AC_INIT(python, PYTHON_VERSION, http://bugs.python.org/)
 AC_CONFIG_SRCDIR([Include/object.h])
 AC_CONFIG_HEADER(pyconfig.h)