also export the LIBRARY_DIRS variable to the calling CMakeLists.txt (needed to...

also export the LIBRARY_DIRS variable to the calling CMakeLists.txt (needed to publish it to further downstream dependencies)

cmake/add_dependency.cmake

@@ -38,9 +38,10 @@ FUNCTION(add_dependency dependency_project_name required_version)
   link_directories(${${dependency_project_name}_LIBRARY_DIR})
   SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${${dependency_project_name}_CXX_FLAGS}" PARENT_SCOPE)
   SET(${dependency_project_name}_LIBRARIES ${${dependency_project_name}_LIBRARIES} PARENT_SCOPE)
+  SET(${dependency_project_name}_LIBRARY_DIRS "${${dependency_project_name}_LIBRARY_DIRS} ${${dependency_project_name}_LIBRARY_DIR}" PARENT_SCOPE)
   SET(${dependency_project_name}_LINKER_FLAGS "${${dependency_project_name}_LINKER_FLAGS} ${${dependency_project_name}_LINK_FLAGS}" PARENT_SCOPE)
   SET(${dependency_project_name}_LINK_FLAGS "${${dependency_project_name}_LINKER_FLAGS} ${${dependency_project_name}_LINK_FLAGS}" PARENT_SCOPE)
-  SET(${dependency_project_name}_CXX_FLAGS ${${dependency_project_name}_CXX_FLAGS} PARENT_SCOPE)
+  SET(${dependency_project_name}_CXX_FLAGS "${${dependency_project_name}_CXX_FLAGS}" PARENT_SCOPE)
   SET(${dependency_project_name}_FOUND ${${dependency_project_name}_FOUND} PARENT_SCOPE)
 
 ENDFUNCTION(add_dependency)