devel/qt5-qdoc is the only package on my installation of 13.1-RC3 that requires old llvm90. Please update the port.
I just tried LLVM_VERSION=13 instead of LLVM_DEFAULT (aka 9.0) and the port builds and installs as expected. In principle, the port could be built with the LLVM version that KDE uses? Then only CONFIGURE_ENV=LLVM_INSTALL_DIR= should be set accordingly? Or are there deeper reasons why it does not work with LLVM versions > 9.0 (at runtime)?
I guess it's a binary package issue. It hasn't been updated.
Other ports such as devel/kdevelop also build with default llvm=90 This is due to omitting USES=qt:gui and not including graphics/mesa-dri bumping LLVM_DEFAULT to 13 Not sure why the default is so old, I suspect it's due to old X11 hence bsd.default-versions.mk referencing Graphics Team for changes
Fixed. Thanks!