--- a/util-src/pposix.c Sat Sep 08 11:51:52 2018 +0200 +++ b/util-src/pposix.c Sat Sep 08 11:52:44 2018 +0200 @@ -26,8 +26,10 @@ #endif #endif #if defined(__APPLE__) +#ifndef _DARWIN_C_SOURCE #define _DARWIN_C_SOURCE #endif +#endif #ifndef _POSIX_C_SOURCE #define _POSIX_C_SOURCE 200809L #endif