Index: x11-wm/piewm/Makefile
===================================================================
--- x11-wm/piewm/Makefile	(revision 545815)
+++ x11-wm/piewm/Makefile	(working copy)
@@ -14,6 +14,6 @@
 DISABLE_SIZE=	yes
 USE_XORG=	xbitmaps xpm xmu
 
-CFLAGS+=	-Wno-return-type
+CFLAGS+=	-Wno-return-type -fcommon
 
 .include <bsd.port.mk>