Add missing dependency in python

src/CMakeLists.txt

@@ -73,7 +73,7 @@ SET_TARGET_PROPERTIES(${PYTHON_MODULE}
 	PROPERTIES PREFIX "")
 
 PKG_CONFIG_USE_DEPENDENCY(${PYTHON_MODULE} dynamic-graph)
-TARGET_LINK_LIBRARIES(${PYTHON_MODULE})
+TARGET_LINK_LIBRARIES(${PYTHON_MODULE} ${PYTHON_LIBRARY})
 
 CONFIG_FILES(link-to-python.hh)
 INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_PATH}