1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index bfaf61e..7bc8c9d 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,7 @@ else
   # __inline__ is a GCCism
   CFLAGS := $(CFLAGS) -Dinline="__inline__"
 endif
+CFLAGS := $(CFLAGS) -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=500
 
 # OSLib
 ifneq ($(findstring clean,$(MAKECMDGOALS)),clean)