refix the problem of starpu mpi function detection - with the complete path of...

refix the problem of starpu mpi function detection - with the complete path of mpi libraries the test fails... with -L/... and -l it succeeds

CMakeLists.txt

@@ -631,11 +631,12 @@ if (MORSE_DISTRIB_DIR OR EXISTS "${CMAKE_SOURCE_DIR}/cmake_modules/")
                 list(APPEND CMAKE_REQUIRED_INCLUDES "${MPI_C_INCLUDE_PATH}")
                 list(APPEND CMAKE_REQUIRED_FLAGS "${MPI_C_LINK_FLAGS}")
                 set(CMAKE_REQUIRED_LIBRARIES "${STARPU_LIBRARIES_DEP}")
-#                if (CHAMELEON_SIMULATION)
-#                    set(CMAKE_REQUIRED_LIBRARIES "${STARPU_LIBRARIES_DEP}")
-#                else()
-#                    set(CMAKE_REQUIRED_LIBRARIES "${STARPU_LIBRARIES_DEP} -lmpi")
-#                endif()
+                list(APPEND CMAKE_REQUIRED_LIBRARIES "${MPI_C_LIBRARIES}")
+                if (CHAMELEON_SIMULATION)
+                    set(CMAKE_REQUIRED_LIBRARIES "${STARPU_LIBRARIES_DEP}")
+                else()
+                    set(CMAKE_REQUIRED_LIBRARIES "${STARPU_LIBRARIES_DEP} -lmpi")
+                endif()
                 unset(STARPU_MPI_DATA_REGISTER_FOUND CACHE)
                 check_function_exists(starpu_mpi_data_register_comm STARPU_MPI_DATA_REGISTER_FOUND)
                 if ( STARPU_MPI_DATA_REGISTER_FOUND )