diff --git a/cad/ghdl/Makefile b/cad/ghdl/Makefile
index 58fff6ed1a44..da98a6dc1271 100644
--- a/cad/ghdl/Makefile
+++ b/cad/ghdl/Makefile
@@ -1,64 +1,66 @@
 PORTNAME=	ghdl
 DISTVERSIONPREFIX=	v
 DISTVERSION=	4.0.0
 CATEGORIES=	cad
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	GNU VHDL simulator
 WWW=		https://github.com/ghdl/ghdl
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING.md
 
+BROKEN_aarch64=	build breaks, see https://github.com/ghdl/ghdl/issues/2639
+
 TEST_DEPENDS=	bash:shells/bash \
 		${PYTHON_PKGNAMEPREFIX}pyTooling>=2.11.0:devel/py-pyTooling@${PY_FLAVOR}
 
 USES=		ada:run gmake python:test shebangfix
 SHEBANG_FILES=	testsuite/testsuite.sh
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 
 GNU_CONFIGURE=	yes
 
 LLVMVER=	15 # last supported version, see https://github.com/ghdl/ghdl/blob/master/configure#L317
 
 OPTIONS_DEFINE=		SYNTH
 OPTIONS_SINGLE=		BACKEND
 OPTIONS_SINGLE_BACKEND=	MCODE LLVM
 OPTIONS_DEFAULT=	LLVM SYNTH
 OPTIONS_SUB=		yes
 
 MCODE_DESC=		Use the MCODE backend
 # MCODE is enabled by default and doesn't require any configuration options
 
 LLVM_DESC=		Code generator is LLVM
 LLVM_USES=		ncurses
 LLVM_CONFIGURE_ON=	--with-llvm-config=${LOCALBASE}/bin/llvm-config${LLVMVER}
 LLVM_BUILD_DEPENDS=	llvm-config${LLVMVER}:devel/llvm${LLVMVER}
 LLVM_RUN_DEPENDS=	llc${LLVMVER}:devel/llvm${LLVMVER}
 
 SYNTH_DESC=		Enable Synthesis Features in ghdl
 SYNTH_CONFIGURE_ON=	--enable-synth
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libghdl-4_0_0.so
 
 post-install-MCODE-on:
 	@${STRIP_CMD} \
 		${STAGEDIR}${PREFIX}/bin/ghdl \
 		${STAGEDIR}${PREFIX}/lib/libghdlvpi.so
 
 post-install-LLVM-on:
 	@${STRIP_CMD} \
 		${STAGEDIR}${PREFIX}/bin/ghdl \
 		${STAGEDIR}${PREFIX}/bin/ghwdump \
 		${STAGEDIR}${PREFIX}/bin/ghdl1-llvm \
 		${STAGEDIR}${PREFIX}/lib/libghdlvpi.so \
 		${STAGEDIR}${PREFIX}/lib/libghw.so
 
 do-test:
 	@cd ${WRKSRC}/testsuite && \
 		${SETENV} ${MAKE_ENV} GHDL=${STAGEDIR}${PREFIX}/bin/ghdl ${SH} testsuite.sh
 
 .include <bsd.port.mk>