[CMake] Fix compilation.

src/CMakeLists.txt

@@ -17,7 +17,7 @@
 # Python
 #
 
-INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
+INCLUDE_DIRECTORIES(SYSTEM ${Boost_INCLUDE_DIRS})
 LINK_DIRECTORIES(${Boost_LIBRARY_DIRS} ${PYTHON_LIBRARY_DIRS})
 
 #
@@ -74,8 +74,8 @@ PKG_CONFIG_USE_DEPENDENCY(${PYTHON_MODULE} dynamic-graph)
 #TARGET_LINK_LIBRARIES(${PYTHON_MODULE} ${PYTHON_LIBRARY})
 
 CONFIG_FILES(link-to-python.hh)
-INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_PATH}
-  ${CMAKE_CURRENT_BINARY_DIR})
+INCLUDE_DIRECTORIES(SYSTEM ${PYTHON_INCLUDE_PATH})
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})
 
 #
 # Installation