diff --git a/graphics/dcmtk/Makefile b/graphics/dcmtk/Makefile
index f1e606b9bec1..eb97a85aed4e 100644
--- a/graphics/dcmtk/Makefile
+++ b/graphics/dcmtk/Makefile
@@ -1,35 +1,44 @@
 PORTNAME=	dcmtk
 DISTVERSIONPREFIX=	${PORTNAME:tu}-
 DISTVERSION=	3.6.7
 CATEGORIES=	graphics devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	DICOM ToolKit, libraries and applications for DICOM/MEDICOM standard
 WWW=		https://dcmtk.org
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYRIGHT
 
 BROKEN_aarch64=	clang-14 crashes, see bug#264408
 
 LIB_DEPENDS=	libicuuc.so:devel/icu \
 		libpng.so:graphics/png \
 		libtiff.so:graphics/tiff
 
 USES=		compiler:c++11-lang cmake cpe gnome jpeg ssl
 CPE_VENDOR=	offis
 USE_GITHUB=	yes
 GH_ACCOUNT=	${PORTNAME:tu}
 USE_GNOME=	libxml2
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_OFF=	DCMTK_WITH_DOXYGEN
 
 OPTIONS_DEFINE=	DOCS
 
 PORTDOCS=	*
 
 TEST_TARGET=	test test-exhaustive
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${ARCH:Mpowerpc*} && ${COMPILER_VERSION} == 140
+LLVM_VER=	15
+BUILD_DEPENDS+=	clang${LLVM_VER}:devel/llvm${LLVM_VER}
+CC=		${LOCALBASE}/bin/clang${LLVM_VER}
+CXX=		${LOCALBASE}/bin/clang++${LLVM_VER}
+.endif
+
+.include <bsd.port.post.mk>