1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 1f78832..9517c1e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,3 @@
-CFLAGS ?= -g -O2 -W -Wall -std=c99
+CFLAGS ?= -g -O2 -W -Wall -std=c99 -D_POSIX_C_SOURCE=2
 pw:
 clean: ; rm -f pw