$OpenBSD: patch-frontends_framebuffer_Makefile,v 1.2 2017/06/28 13:16:49 ajacoutot Exp $
--- frontends/framebuffer/Makefile.orig	Sat Nov 19 06:37:41 2016
+++ frontends/framebuffer/Makefile	Mon Nov 21 02:23:58 2016
@@ -21,9 +21,6 @@ CFLAGS += '-DNETSURF_FB_FONT_CURSIVE="$(NETSURF_FB_FON
 CFLAGS += '-DNETSURF_FB_FONT_FANTASY="$(NETSURF_FB_FONT_FANTASY)"'
 
 CFLAGS += -std=c99 -g -Dsmall \
-	  -D_BSD_SOURCE \
-	  -D_DEFAULT_SOURCE \
-	  -D_XOPEN_SOURCE=600 \
 	  -D_POSIX_C_SOURCE=200809L
 
 LDFLAGS += -lm
