Include CMAKE_{C,CXX}_FLAGS.

scripts/CMakeLists.txt

@@ -90,8 +90,8 @@ IF(MALLOC_LIB)
 ENDIF()
 
 IF(CMAKE_GENERATOR MATCHES "Makefiles")
-  SET(CFLAGS "@CMAKE_C_FLAGS_RELWITHDEBINFO@")
-  SET(CXXFLAGS "@CMAKE_CXX_FLAGS_RELWITHDEBINFO@")
+  SET(CFLAGS "@CMAKE_C_FLAGS@ @CMAKE_C_FLAGS_RELWITHDEBINFO@")
+  SET(CXXFLAGS "@CMAKE_CXX_FLAGS@ @CMAKE_CXX_FLAGS_RELWITHDEBINFO@")
   FOREACH(ARCH ${CMAKE_OSX_ARCHITECTURES})
     SET(CFLAGS   "${CFLAGS} -arch ${ARCH}")
     SET(CXXFLAGS "${CXXFLAGS} -arch ${ARCH}")