1 files changed, 3 insertions, 1 deletions
diff --git a/config.mk b/config.mk
index c0709b5..f087ea4 100644
--- a/config.mk
+++ b/config.mk
@@ -1,6 +1,8 @@
 PREFIX    = /usr
 MANPREFIX = $(PREFIX)/share/man
 
-CPPFLAGS  =
+CC = cc
+
+CPPFLAGS  = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700
 CFLAGS    = -std=c99 -Wall -O2
 LDFLAGS   = -s