[cmake] Activate test for METIS and use it where appropriate.

Just like for the autotools.

cmake/modules/DuneIstlMacros.cmake

 find_package(BoostFusion)
 find_package(METIS)
+include(AddMETISFlags)
 find_package(ParMETIS)
 include(AddParMETISFlags)
 find_package(SuperLU)

config.h.cmake

@@ -39,6 +39,9 @@
    by configure _and_ if the application uses the PARMETIS_CPPFLAGS */
 #cmakedefine HAVE_PARMETIS ENABLE_PARMETIS
 
+/* Define if you have METIS library */
+#cmakedefine HAVE_METIS 1
+
 /* Define to ENABLE_SUPERLU if the SuperLU library is available */
 #cmakedefine HAVE_SUPERLU ENABLE_SUPERLU
 

dune/istl/paamg/test/CMakeLists.txt

@@ -99,5 +99,6 @@ foreach(_exe ${ALLTESTS})
   add_test(${_exe} ${_exe})
 endforeach(_exe ${ALLTESTS})
 
-add_dune_mpi_flags("${MPITESTS}")
 add_dune_parmetis_flags("${PARMETISTESTS}")
+add_dune_metis_flags("${PARMETISTESTS}")
+add_dune_mpi_flags("${MPITESTS}")

dune/istl/test/CMakeLists.txt

@@ -114,6 +114,7 @@ if(HAVE_MPI)
   add_executable(matrixmarkettest "matrixmarkettest.cc")
   add_dune_mpi_flags("${MPITESTS}")
   add_dune_parmetis_flags(matrixredisttest)
+  add_dune_metis_flags(matrixredisttest)
 endif(HAVE_MPI)
 
 foreach(_exe ${ALLTESTS})