Index: head/devel/babeltrace/Makefile
===================================================================
--- head/devel/babeltrace/Makefile	(revision 507202)
+++ head/devel/babeltrace/Makefile	(revision 507203)
@@ -1,49 +1,50 @@
 # $FreeBSD$
 
 PORTNAME=	babeltrace
 PORTVERSION=	1.5.6
 DISTVERSIONPREFIX=	v
 CATEGORIES=	devel
 
 MAINTAINER=	pizzamig@FreeBSD.org
 COMMENT=	Tool and library to read, write and convert execution traces
 
 # license is complicated
 LICENSE=	MIT GPLv2 LGPL21
 LICENSE_COMB=	multi
 LICENSE_FILE_MIT=	${WRKSRC}/mit-license.txt
 LICENSE_FILE_GPLv2=	${WRKSRC}/gpl-2.0.txt
 LICENSE_FILE_LGPL21=	${WRKSRC}/lgpl-2.1.txt
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libpopt.so:devel/popt \
 		libuuid.so:misc/e2fsprogs-libuuid
 
 USES=		autoreconf:build bison gmake libtool pathfix pkgconfig
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	efficios
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--disable-debug-info
+CONFIGURE_ENV=	YACC="bison -y"
 USE_GNOME=	glib20
 LDFLAGS+=	-L${LOCALBASE}/lib
 USE_LDCONFIG=	yes
 
 PORTDOCS=	ChangeLog std-ext-lib.txt API.txt lttng-live.txt
 
 OPTIONS_DEFINE=	DOCS
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|LICENSE mit-license.txt gpl-2.0.txt||' \
 		${WRKSRC}/Makefile.am
 	@${REINPLACE_CMD} -e 's|machine\/endian|sys\/endian|' \
 		${WRKSRC}/include/babeltrace/endian.h
 
 pre-configure:
 	(cd ${WRKSRC}; ./bootstrap )
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libbabeltrace*so.1.0.0
 
 .include <bsd.port.mk>
Index: head/devel/clixon/Makefile
===================================================================
--- head/devel/clixon/Makefile	(revision 507202)
+++ head/devel/clixon/Makefile	(revision 507203)
@@ -1,31 +1,32 @@
 # $FreeBSD$
 
 PORTNAME=	clixon
 PORTVERSION=	3.9.0
 PORTREVISION=	1
 CATEGORIES=	devel
 
 MAINTAINER=	dcornejo@netgate.com
 COMMENT=	CLIgen is a Command-Line Interface generator
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 LIB_DEPENDS=	libcligen.so:devel/cligen \
 		libfcgi.so:www/fcgi
 BUILD_DEPENDS=	cligen>=3.9.0:devel/cligen
 
 USES=		autoreconf bison gmake
 
 USE_LDCONFIG=	yes
 USE_GITHUB=	yes
 
 GH_ACCOUNT=	clicon
 MAKE_ARGS=	wwwdir=${PREFIX}/sbin wwwuser=${WWWOWN}
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-cligen=${LOCALBASE} --sysconfdir=${ETCDIR}
+CONFIGURE_ENV=	YACC="bison -y"
 
 MAKE_JOBS_UNSAFE=yes
 
 .include <bsd.port.mk>
Index: head/security/aide/Makefile
===================================================================
--- head/security/aide/Makefile	(revision 507202)
+++ head/security/aide/Makefile	(revision 507203)
@@ -1,32 +1,33 @@
 # Created by: Cy Schubert (Cy.Schubert@uumail.gov.bc.ca)
 # $FreeBSD$
 
 PORTNAME=	aide
 PORTVERSION=	0.16.1
 CATEGORIES=	security
 MASTER_SITES=	https://github.com/aide/aide/releases/download/v${PORTVERSION}/
 
 MAINTAINER=	cy@FreeBSD.org
 COMMENT=	File and directory integrity checker
 
 LIB_DEPENDS=	libmhash.so:security/mhash \
 		libpcre.so:devel/pcre
 
 USES=		autoreconf bison gmake localbase
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS+=--with-mhash \
 		--with-zlib \
 		--mandir=${MANPREFIX}/man \
 		--with-config_file=${PREFIX}/etc/aide.conf
+CONFIGURE_ENV=	YACC="bison -y"
 
 LDFLAGS+=	-lpthread
 
 SUB_FILES=	pkg-message
 
 post-install:
 	${INSTALL_DATA} ${FILESDIR}/aide.conf.freebsd ${STAGEDIR}${PREFIX}/etc/aide.conf.sample
 	${MKDIR} ${STAGEDIR}/var/db/aide/databases
 	${CHMOD} 0700 ${STAGEDIR}/var/db/aide ${STAGEDIR}/var/db/aide/databases
 
 .include <bsd.port.mk>