From 0471629eb7316745f5cf0a46f0cadf06578c4e81 Mon Sep 17 00:00:00 2001
From: Matthias Wachs <wachs@net.in.tum.de>
Date: Fri, 25 Mar 2011 15:37:04 +0000
Subject: [PATCH] check for glpk >= 4.32

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index b3a965e3b..f89f8e185 100644
--- a/configure.ac
+++ b/configure.ac
@@ -259,10 +259,13 @@ fi	# $build = $target
 glpk=true
 AC_CHECK_HEADERS(glpk.h, ,[gplk=false])
 AC_CHECK_LIB([glpk],[glp_create_prob], , [gplk=false])
+# GLPK must support atm MLP presolving, version >= 4.32
+AC_CHECK_MEMBERS(glp_iocp.presolve, ,[gplk=false],[[#include <glpk.h>]])
 if test $gplk == false
 then
 	AM_CONDITIONAL(HAVE_GLPK, [test x$gplk = xtrue])
 	AM_CONDITIONAL(HAVE_LIBGLPK, [test x$gplk != x$gplk])
+	AC_MSG_ERROR([GNUnet requires GLPK  >= 4.32])
 else
 	AM_CONDITIONAL(HAVE_GLPK, [test x$gplk = xtrue])
 	AM_CONDITIONAL(HAVE_LIBGLPK, [test x$gplk = x$gplk])
-- 
2.25.1