Merge branch 'feature/istl-issue-6-UMFPACK_FOUND-not-set' into 'master'

[CMake] FindSuiteSparse defines HAVE_UMFPACK for backwards compatibility

This fixes dune-istl's issue 6 

See merge request !30

cmake/modules/FindSuiteSparse.cmake

@@ -236,6 +236,7 @@ endif()
 
 #set HAVE_SUITESPARSE for config.h
 set(HAVE_SUITESPARSE ${SuiteSparse_FOUND})
+set(HAVE_UMFPACK ${SuiteSparse_UMFPACK_FOUND})
 
 # register all SuiteSparse related flags
 if(SuiteSparse_FOUND)

config.h.cmake

@@ -97,7 +97,7 @@
 #cmakedefine HAVE_IS_INDEXABLE_SUPPORT 1
 
 /* Define to ENABLE_UMFPACK if the UMFPack library is available */
-#cmakedefine HAVE_UMFPACK ENABLE_UMFPACK
+#cmakedefine HAVE_UMFPACK ENABLE_SUITESPARSE
 
 /* Define to ENABLE_SUITESPARSE if the SuiteSparse library is available */
 #cmakedefine HAVE_SUITESPARSE ENABLE_SUITESPARSE