Index: comms/libfec/Makefile
===================================================================
--- comms/libfec/Makefile
+++ comms/libfec/Makefile
@@ -14,6 +14,8 @@
 
 LICENSE=	LGPL21
 
+BUILD_DEPENDS=	as:devel/binutils
+
 MAKEFILE=	makefile
 
 GNU_CONFIGURE=	yes
Index: comms/syncterm/Makefile
===================================================================
--- comms/syncterm/Makefile
+++ comms/syncterm/Makefile
@@ -11,6 +11,8 @@
 
 LICENSE=	GPLv2
 
+BUILD_DEPENDS=	as:devel/binutils
+
 WRKSRC=		${WRKDIR}/syncterm-${PORTVERSION}/src/syncterm
 USES=		gmake perl5 tar:tgz
 USE_PERL5=	build
Index: devel/plan9port/Makefile
===================================================================
--- devel/plan9port/Makefile
+++ devel/plan9port/Makefile
@@ -19,6 +19,7 @@
 BROKEN_armv6=		fails to compile: thread.c:130:5: no member named 'arm_r0' in 'mcontext_t'
 BROKEN_armv7=		fails to compile: thread.c:130:5: no member named 'arm_r0' in 'mcontext_t'
 
+BUILD_DEPENDS=	as:devel/binutils
 LIB_DEPENDS=	libfreetype.so:print/freetype2 \
 		libfontconfig.so:x11-fonts/fontconfig
 
Index: emulators/vmw/Makefile
===================================================================
--- emulators/vmw/Makefile
+++ emulators/vmw/Makefile
@@ -11,6 +11,8 @@
 
 ONLY_FOR_ARCHS=	i386 amd64
 
+BUILD_DEPENDS=	as:devel/binutils
+
 WRKSRC=		${WRKDIR}/${PORTNAME}/src
 USES=		iconv
 MAKE_ENV+=	__MAKE_CONF=/dev/null ASFLAGS="${ASFLAGS}"
Index: games/dxx-rebirth/Makefile
===================================================================
--- games/dxx-rebirth/Makefile
+++ games/dxx-rebirth/Makefile
@@ -20,6 +20,7 @@
 
 BROKEN_aarch64=	fails to configure: DXX-Archive.3: checking version of assembler 'as' ... error: No such file or directory
 
+BUILD_DEPENDS=	as:devel/binutils
 LIB_DEPENDS=	libphysfs.so:devel/physfs \
 		libpng.so:graphics/png
 
Index: graphics/vulkan-loader/Makefile
===================================================================
--- graphics/vulkan-loader/Makefile
+++ graphics/vulkan-loader/Makefile
@@ -11,7 +11,8 @@
 
 LICENSE=	APACHE20
 
-BUILD_DEPENDS=	${LOCALBASE}/include/vulkan/vulkan.h:devel/vulkan-headers
+BUILD_DEPENDS=	${LOCALBASE}/include/vulkan/vulkan.h:devel/vulkan-headers \
+		as:devel/binutils
 
 USES=		cmake compiler:c++11-lib pkgconfig python:3.4+,build
 USE_LDCONFIG=	yes
Index: lang/hla/Makefile
===================================================================
--- lang/hla/Makefile
+++ lang/hla/Makefile
@@ -12,6 +12,8 @@
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	High Level Assembly
 
+BUILD_DEPENDS=	as:devel/binutils
+
 USES=		bison dos2unix zip:infozip
 
 WRKSRC=		${WRKDIR}/hlasrc/trunk/trunk
Index: lang/mit-scheme/Makefile
===================================================================
--- lang/mit-scheme/Makefile
+++ lang/mit-scheme/Makefile
@@ -18,6 +18,8 @@
 USES=		gmake
 WRKSRC=		${WRKDIR}/mit-scheme-${PORTVERSION}/src/
 
+BUILD_DEPENDS=	as:devel/binutils
+
 OPTIONS_DEFINE=	GDBM MCRYPT MHASH OPENSSL PGSQL X11
 OPTIONS_SUB=	yes
 MCRYPT_DESC=	mcrypt library support
Index: lang/ocaml/Makefile
===================================================================
--- lang/ocaml/Makefile
+++ lang/ocaml/Makefile
@@ -24,6 +24,8 @@
 BROKEN_mips64=	No ASM support
 BROKEN_mips=	No ASM support
 
+BUILD_DEPENDS=	as:devel/binutils
+
 USES=		cpe compiler:c11 gmake tar:xz
 USE_LDCONFIG=	yes
 CPE_VENDOR=	inria
Index: math/ldouble/Makefile
===================================================================
--- math/ldouble/Makefile
+++ math/ldouble/Makefile
@@ -17,6 +17,8 @@
 USE_LDCONFIG=	yes
 ONLY_FOR_ARCHS=	i386 sparc64
 
+BUILD_DEPENDS=	as:devel/binutils
+
 PLIST_FILES=	lib/libml.a \
 		lib/libml.so \
 		lib/libml.so.0
Index: multimedia/mplayer/Makefile.common
===================================================================
--- multimedia/mplayer/Makefile.common
+++ multimedia/mplayer/Makefile.common
@@ -13,6 +13,7 @@
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	as:devel/binutils
 LIB_DEPENDS=	libpng.so:graphics/png \
 		libavcodec.so:multimedia/ffmpeg \
 		libfreetype.so:print/freetype2