--- a/suncc.mk	Sat Dec 01 20:34:55 2012 +0100
+++ b/suncc.mk	Mon Aug 12 14:40:19 2013 +0200
@@ -31,7 +31,7 @@
 AR = ar
 RM = rm
 
-CFLAGS  = -g -c
+CFLAGS  = -g -c -xc99
 COFLAGS = -o
 LDFLAGS =
 LOFLAGS = -o