SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}")
ENDFOREACH(flag)
-SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} -Wl,-zdefs -fvisibility=hidden ")
+SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} -Wl,-zdefs -fvisibility=hidden -Wno-cast-function-type")
SET(CMAKE_EXE_LINKER_FLAGS "-Wl,--as-needed")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")