From b37a2ff6a986bb5b68da43022958fc4408150d7d Mon Sep 17 00:00:00 2001
From: Martin Szulecki
Date: Tue, 20 Mar 2012 22:48:27 +0100
Subject: Fix detection of cython version

---
 m4/ac_pkg_cython.m4 | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/m4/ac_pkg_cython.m4 b/m4/ac_pkg_cython.m4
index aeae6a0..1b640e7 100644
--- a/m4/ac_pkg_cython.m4
+++ b/m4/ac_pkg_cython.m4
@@ -41,11 +41,17 @@ AC_DEFUN([AC_PROG_CYTHON],[
                         if test -z "$available_patch" ; then
                                 [available_patch=0]
                         fi
-                        if test $available_major -ne $required_major \
-                                -o $available_minor -ne $required_minor \
-                                -o $available_patch -lt $required_patch ; then
+                        if test $available_major -gt $required_major || \
+                                ( test $available_major -eq $required_major && \
+                                      test $available_minor -gt $required_minor ) || \
+                                ( test $available_major -eq $required_major && \
+                                        test $available_minor -eq $required_minor && \
+                                        test $available_patch -ge $required_patch ) ; then
+
+                                AC_MSG_NOTICE([Cython executable is '$CYTHON'])
+                        else
                                 AC_MSG_WARN([Cython version >= $1 is required.  You have $cython_version.  You should look at http://www.cython.org])
-                                CYTHON=false
+                                CYTHON='echo "Error: Cython version >= $1 is required.  You have '"$cython_version"'.  You should look at http://www.cython.org" ; false'
                         fi
                 else
                         AC_MSG_WARN([cannot determine Cython version])
-- 
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