From c28950c0f82487379a6c2389969051e41a0e65a5 Mon Sep 17 00:00:00 2001
From: Roland Kaufmann <roland.kaufmann@uni.no>
Date: Mon, 4 Feb 2013 22:23:59 +0100
Subject: [PATCH] Link to core function to get more realistic test

Using umfpack_dl_solve as a test function increases the chance that the
probe will not be able to link successfully if it has not found all
libraries necessary (to link other than trivial test programs).
---
 cmake/Modules/FindSuiteSparse.cmake | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/cmake/Modules/FindSuiteSparse.cmake b/cmake/Modules/FindSuiteSparse.cmake
index b5d585f5..3d69a693 100644
--- a/cmake/Modules/FindSuiteSparse.cmake
+++ b/cmake/Modules/FindSuiteSparse.cmake
@@ -34,8 +34,9 @@ function (try_compile_umfpack varname)
   check_c_source_compiles (
         "#include <umfpack.h>
 int main (void) {
-  double t;
-  t = umfpack_timer ();
+  double info, sym, num;
+  umfpack_dl_solve (UMFPACK_A, 0, 0, 0, 0, 0, &sym, &num, &info);
+  umfpack_timer ();
   return 0;
 }" ${varname})
   cmake_pop_check_state ()