diff --git a/devel/qbs/Makefile b/devel/qbs/Makefile
index 03a52ca09806..2053e65ae996 100644
--- a/devel/qbs/Makefile
+++ b/devel/qbs/Makefile
@@ -1,59 +1,27 @@
 PORTNAME=	qbs
 DISTVERSIONPREFIX=	src-
 DISTVERSION=	1.21.0
+PORTREVISION=	1
 CATEGORIES=	devel
 MASTER_SITES=	QT/official_releases/${PORTNAME}/${PORTVERSION}
 DIST_SUBDIR=	KDE/Qt/qbs
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	Qbs Build Suite
 
 LICENSE=	GPLv3 LGPL21
 LICENSE_COMB=	dual
 
-USES=		compiler:c++11-lib gl python:run qmake:outsource qt:5 shebangfix
+BROKEN=		does not build with clang13 or newer
+
+USES=		cmake compiler:c++11-lib gl python:run qt:5 shebangfix
 USE_GL=		gl
 USE_LDCONFIG=	yes
 USE_QT=		core concurrent gui network script widgets xml \
 		buildtools_build testlib_build
 
 SHEBANG_FILES=	src/3rdparty/python/bin/dmgbuild
 
-QMAKE_ARGS=		CONFIG+=qbs_disable_rpath \
-			CONFIG+=qbs_enable_project_file_updates
-QMAKE_SOURCE_PATH=	${WRKSRC}/qbs.pro
-
-OPTIONS_DEFINE=		DOCS
-DOCS_USES=	qt:5
-DOCS_USE=		QT=help_build,qdoc_build,sql-sqlite3_build
-OPTIONS_DEFAULT=	${OPTIONS_DEFINE}
-
-ALL_TARGET=		all
-INSTALL_TARGET=		install
-
-DOCS_ALL_TARGET=	docs
-DOCS_INSTALL_TARGET=	install_docs
-
 PLIST_SUB=		SHLIB_VERSION="${PORTVERSION}"
 
-pre-configure:
-# We piggyback on QMAKE_LIBDIR_FLAGS to make sure -L${WRKSRC}/lib is passed to
-# the linker before -L/usr/local/lib. By default, the opposite happens, which
-# is a problem when a Qt port is being upgraded, since an existing library
-# would end up being picked up instead of those built in ${WRKSRC}/lib. Since
-# qmake appends the value of QMAKE_LIBDIR to QMAKE_LIBDIR_FLAGS, we can use the
-# latter to get the linker path order right. qmake is smart enough to strip
-# occurrences of ${WRKSRC}/lib from .pc and .prl files when installing them.
-# See QTBUG-40825 and ports bugs 194088, 195105 and 198720.
-	${MKDIR} ${CONFIGURE_WRKSRC}
-	${ECHO_CMD} 'QMAKE_LIBDIR_FLAGS = -L${CONFIGURE_WRKSRC}/lib' >> ${CONFIGURE_WRKSRC}/.qmake.cache
-
-# Workaround strip(1) problems
-post-stage:
-	-${RM} ${STAGEDIR}${LOCALBASE}/libexec/qbs/ecp.*
-
-# The file in question is not used on FreeBSD. To silence stage-qa, remove it from stage-dir.
-post-install:
-	${RM} ${STAGEDIR}${DATADIR}/modules/bundle/update-specs.sh
-
 .include <bsd.port.mk>