-include_directories(BEFORE include/freebsd)
-include_directories(BEFORE include/freebsd/sys/include)
include_directories(BEFORE include/freebsd/src/sys)
-include_directories(BEFORE include/freebsd/dev/include)
-include_directories(BEFORE include/freebsd/net/include)
+include_directories(include/freebsd)
+include_directories(include/freebsd/sys/include)
+include_directories(include/freebsd/dev/include)
+include_directories(include/freebsd/net/include)
include_directories(include)