-set(PROJECT_LIBDIR "${CMAKE_SOURCE_DIR}/libs" CACHE PATH "Subpath to libraries")
-set(PROJECT_RESOURCES "${CMAKE_SOURCE_DIR}/data" CACHE PATH "Subpath to data")
+set(PROJECT_LIBDIR "\"${CMAKE_SOURCE_DIR}/libs\"" CACHE PATH "Subpath to libraries")
+set(PROJECT_RESOURCES "\"${CMAKE_SOURCE_DIR}/data\"" CACHE PATH "Subpath to data")