From 93556dc60dffdf6ed1eb098031906bf4fcd77835 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C3=A5rd=20Skaflestad?= <Bard.Skaflestad@sintef.no>
Date: Tue, 3 Jan 2012 20:20:16 +0100
Subject: [PATCH] Provide diagnostic message when failing to locate UMFPACK
 library.

Not all processors support the 'AM_COND_IF' macro (introduced in
Automake 1.11), so only call the macro if it is available in the
processor.
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 8ac08a6f..0485cbd2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -59,6 +59,12 @@ AC_SEARCH_LIBS([umfpack_dl_solve], [umfpack],
 AM_CONDITIONAL([UMFPACK],
   [test "x$umfpack_header" != "xno" -a "x$umfpack_lib" != "xno"])
 
+m4_ifdef([AM_COND_IF],
+[AM_COND_IF([UMFPACK], [],
+ [AC_MSG_NOTICE([Found no working installation of UMFPACK.
+                 UMFPACK support is disabled.])])
+])
+
 
 AC_CONFIG_FILES([
  Makefile