diff --git a/PIPMacros.cmake b/PIPMacros.cmake
index 9a81f00a..77a3d4c7 100644
--- a/PIPMacros.cmake
+++ b/PIPMacros.cmake
@@ -26,13 +26,17 @@ macro(pip_code_model RESULT)
 	endforeach()
 	set(CCM_OUT ${CMAKE_CURRENT_BINARY_DIR}/ccm_${PROJECT_NAME}.cpp)
 	set(${RESULT} ${${RESULT}} ${CCM_OUT})
+	set(CCM_FILES)
+	foreach(csrc ${CCM_SRC})
+		list(APPEND CCM_FILES "${CMAKE_CURRENT_SOURCE_DIR}/${csrc}")
+	endforeach()
 	#message(STATUS "CCM = ${RESULT}")
 	if(NOT DEFINED PIP_DLL_DIR)
 		set(PIP_DLL_DIR ${CMAKE_CURRENT_BINARY_DIR})
 	endif()
 	add_custom_command(OUTPUT ${CCM_OUT}
 						COMMAND ${PIP_CMG}
-						ARGS -q ${OPTS} -o ${CMAKE_CURRENT_BINARY_DIR}/ccm_${PROJECT_NAME} ${CMG_INCLUDES} ${CMAKE_CURRENT_SOURCE_DIR}/${CCM_SRC}
+						ARGS -q ${OPTS} -o ${CMAKE_CURRENT_BINARY_DIR}/ccm_${PROJECT_NAME} ${CMG_INCLUDES} ${CCM_FILES}
 						DEPENDS ${CCM_SRC}
 						WORKING_DIRECTORY ${PIP_DLL_DIR}
 						COMMENT "Generating ccm_${PROJECT_NAME}.h, ccm_${PROJECT_NAME}.cpp"