[CMake] Moved project() call, now the variables should be defined for all installations.

[[Imported from SVN: r6744]]

CMakeLists.txt

+# set up project
+project("dune-common" C CXX)
+
 # general stuff
 cmake_minimum_required(VERSION 2.8)
 

cmake/modules/DuneMacros.cmake

@@ -109,11 +109,18 @@ macro(dune_project)
   set(CMAKE_CXX_FLAGS_RELEASE "-funroll-loops -O3")
   set(CMAKE_C_FLAGS_RELEASE "-funroll-loops -O3")
 
+  # extract information from dune.module
   dune_module_information(${CMAKE_SOURCE_DIR})
   set(ProjectName            "${DUNE_MOD_NAME}")
   set(ProjectVersion         "${DUNE_MOD_VERSION}")
   set(ProjectMaintainerEmail "${DUNE_MAINTAINER}")
-  project(${ProjectName} C CXX)
+
+  # assert the project names matches
+  if(NOT (ProjectName STREQUAL CMAKE_PROJECT_NAME))
+    message(FATAL_ERROR "Module name from dune.module does not match the name given in CMakeLists.txt.")
+  endif(NOT (ProjectName STREQUAL CMAKE_PROJECT_NAME))
+
+  # optional Fortran support
   include(LanguageSupport)
   workaround_9220(Fortran Fortran_Works)
   if(Fortran_Works)