diff -uNr bison.orig/Makefile bison/Makefile
--- bison.orig/Makefile	2012-07-17 02:30:15.000000000 +0200
+++ bison/Makefile	2012-11-07 23:11:39.000000000 +0100
@@ -6,7 +6,7 @@
 #
 
 PORTNAME=	bison
-PORTVERSION=	2.5.1
+PORTVERSION=	2.6.5
 PORTEPOCH=	1
 CATEGORIES=	devel
 MASTER_SITES=	${MASTER_SITE_GNU}
@@ -19,6 +19,7 @@
 RUN_DEPENDS=	gm4:${PORTSDIR}/devel/m4
 
 USE_XZ=		yes
+USE_PERL5_BUILD=yes
 GNU_CONFIGURE=	yes
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
@@ -45,7 +46,7 @@
 post-extract:
 	@${RM} -f ${WRKSRC}/doc/bison.info*
 	@${REINPLACE_CMD} 's/MANS = yacc.1/MANS =/' ${WRKSRC}/doc/Makefile.in
-.if empty(${PORT_OPTIONS:MNLS})
+.if empty(PORT_OPTIONS:MNLS)
 	@${REINPLACE_CMD} 's/ install-exec-local//' ${WRKSRC}/lib/Makefile.in
 .endif
 
diff -uNr bison.orig/distinfo bison/distinfo
--- bison.orig/distinfo	2012-06-28 02:35:47.000000000 +0200
+++ bison/distinfo	2012-11-07 23:11:56.000000000 +0100
@@ -1,2 +1,2 @@
-SHA256 (bison-2.5.1.tar.xz) = fec90caed650270484955ba6ee73ddb01186608799a27fcaaf868e5274c030d8
-SIZE (bison-2.5.1.tar.xz) = 1608376
+SHA256 (bison-2.6.5.tar.xz) = 8640d5b51aad462db6863711f333a9159836853e0b1e79fdef708c6efb5cd52b
+SIZE (bison-2.6.5.tar.xz) = 1669260
diff -uNr bison.orig/pkg-plist bison/pkg-plist
--- bison.orig/pkg-plist	2012-06-28 02:35:47.000000000 +0200
+++ bison/pkg-plist	2012-10-23 18:45:28.000000000 +0200
@@ -4,6 +4,7 @@
 %%DATADIR%%/bison.m4
 %%DATADIR%%/c++-skel.m4
 %%DATADIR%%/c++.m4
+%%DATADIR%%/c-like.m4
 %%DATADIR%%/c-skel.m4
 %%DATADIR%%/c.m4
 %%DATADIR%%/glr.c
@@ -70,7 +71,9 @@
 %%NLS%%share/locale/ru/LC_MESSAGES/bison-runtime.mo
 %%NLS%%share/locale/ru/LC_MESSAGES/bison.mo
 %%NLS%%share/locale/sl/LC_MESSAGES/bison-runtime.mo
+%%NLS%%share/locale/sq/LC_MESSAGES/bison-runtime.mo
 %%NLS%%share/locale/sr/LC_MESSAGES/bison-runtime.mo
+%%NLS%%share/locale/sr/LC_MESSAGES/bison.mo
 %%NLS%%share/locale/sv/LC_MESSAGES/bison-runtime.mo
 %%NLS%%share/locale/sv/LC_MESSAGES/bison.mo
 %%NLS%%share/locale/th/LC_MESSAGES/bison-runtime.mo