Index: branches/2019Q4/devel/mdb/Makefile
===================================================================
--- branches/2019Q4/devel/mdb/Makefile	(revision 519626)
+++ branches/2019Q4/devel/mdb/Makefile	(revision 519627)
@@ -1,37 +1,46 @@
 # $FreeBSD$
 
 PORTNAME=	mdb
 PORTVERSION=	20190315
 CATEGORIES=	devel
 
 MAINTAINER=	jhb@FreeBSD.org
 COMMENT=	Solaris Modular Debugger
 
 LICENSE=	CDDL
 
-USES=		uidfix
+USES=		compiler uidfix
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	bsdjhb
 GH_PROJECT=	illumos-gate
 GH_TAGNAME=	dbca84a2a4
 
 ONLY_FOR_ARCHS=	amd64
 
 MAKE_ARGS=	WITH_CTF=yes
 MAKE_ARGS+=	BINDIR=${PREFIX}/bin
 MAKE_ARGS+=	LIBDIR=${PREFIX}/lib
 MAKE_ARGS+=	FREEBSD_SRC_DIR=${SRC_BASE}
 WRKSRC_SUBDIR=	freebsd/cddl/usr.bin/mdb
 CFLAGS+=	-DMDB_PREFIX=\\\"${PREFIX}\\\" -g
 
 .include <bsd.port.pre.mk>
 
 .if !exists(${SRC_BASE}/cddl/compat) || !exists(${SRC_BASE}/sys/cddl/compat)
 IGNORE=		requires full source tree with CDDL sources
+.endif
+
+.if ${OSVERSION} < 1300015 && ${COMPILER_TYPE} == "clang" && \
+    ${COMPILER_VERSION} >= 80
+# clang 8 cannot compile due to enum redefinitions in kernel.h
+BUILD_DEPENDS+=	${LOCALBASE}/bin/clang70:devel/llvm70
+CPP=	${LOCALBASE}/bin/clang-cpp70
+CC=	${LOCALBASE}/bin/clang70
+CXX=	${LOCALBASE}/bin/clang++70
 .endif
 
 pre-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/lib/mdb/kvm/${MACHINE_ARCH}
 
 .include <bsd.port.post.mk>
Index: branches/2019Q4
===================================================================
--- branches/2019Q4	(revision 519626)
+++ branches/2019Q4	(revision 519627)

Property changes on: branches/2019Q4
___________________________________________________________________
Modified: svn:mergeinfo
## -0,0 +0,1 ##
   Merged /head:r518116