diff -ruN bash.orig/Makefile bash/Makefile
--- bash.orig/Makefile	2009-03-12 05:54:01.000000000 -0400
+++ bash/Makefile	2009-03-12 21:11:57.786165632 -0400
@@ -9,7 +9,7 @@
 PORTNAME=		bash
 PATCHLEVEL=		10
 PORTVERSION=		4.0.${PATCHLEVEL:S/^0//g}
-PORTREVISION?=		1
+PORTREVISION?=		2
 CATEGORIES=		shells
 MASTER_SITES=		${MASTER_SITE_GNU:S/$/:bash/} \
 			ftp://ftp.cwru.edu/pub/%SUBDIR%/:faq
@@ -43,6 +43,7 @@
 MAN1=			bash.1 bashbug.1
 INFO=			bash
 
+USE_BISON=		build
 GNU_CONFIGURE=		yes
 
 .if !defined(NOPORTDOCS)
@@ -91,8 +92,7 @@
 LDFLAGS+=		-L${LOCALBASE}/lib
 
 CONFIGURE_ENV=		CPPFLAGS="${CPPFLAGS}" \
-			LDFLAGS="${LDFLAGS}" \
-			YACC="${YACC}"
+			LDFLAGS="${LDFLAGS}"
 
 .include <bsd.port.pre.mk>
 
@@ -128,6 +128,9 @@
 	@${SETENV} PKG_PREFIX="${PREFIX}" PKG_DESTDIR="${DESTDIR}" \
 		${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
 
+regression-test: build
+	@(cd ${WRKSRC}; ${SETENV} ${MAKE_ENV} ${MAKE} ${MAKE_ARGS} test)
+
 cklatest:
 	-ncftpls \
 	    ftp://ftp.cwru.edu/pub/${PORTNAME}/${PORTNAME}-${PORTVERSION:C/\.[0-9a-z]*$//}-patches/ \