INCLUDE(FindPkgConfig)
-SET(EXTRA_CFLAGS "-Wall -Werror-implicit-function-declaration -fvisibility=hidden")
+SET(EXTRA_CFLAGS "-Wall -Werror-implicit-function-declaration -fvisibility=hidden ")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_CFLAGS}")