diff -urN /usr/ports/audio/hawkvoice/Makefile ./Makefile
--- /usr/ports/audio/hawkvoice/Makefile	2011-09-24 00:21:02.000000000 +0200
+++ ./Makefile	2012-07-03 00:02:39.000000000 +0200
@@ -18,6 +18,7 @@
 USE_DOS2UNIX=	yes
 USE_GMAKE=	yes
 MAKEFILE=	makefile.linux
+USE_CSTD=	gnu89
 USE_LDCONFIG=	yes
 
 LDFLAGS+=	-L${LOCALBASE}/lib ${PTHREAD_LIBS}