graphics/mesa-dri won't build due to libclc not accepting llvm20

Hi,

Actually llvm is version 21, an I have this in make.conf :
DEFAULT_VERSIONS+=llvm=20

But when I try to build graphics/mesa-dri, I have an error related 
to libclc :


==============================================================================================
--->  Building '/usr/ports/graphics/mesa-dri'
===>  Cleaning for mesa-dri-24.1.7_9
/!\ mesa-dri-24.1.7_9: Makefile warnings, please consider fixing /!\

These options name have characters outside of [-_A-Z0-9]:

anv crocus i915 iris r300 r600 radeonsi radv svga swrast swrast_vk zink

===>  License MIT accepted by the user
===>   mesa-dri-24.1.7_9 depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by mesa-dri-24.1.7_9 for building
===>  Extracting for mesa-dri-24.1.7_9
=> SHA256 Checksum OK for mesa-24.1.7.tar.xz.
=> SHA256 Checksum OK for 4a253aae7ca437201d2a31d2a11a1a5434fe41f1.patch.
=> SHA256 Checksum OK for 5a9c052ba78e5d1b0020b8f8320d211d2205a958.patch.
=> SHA256 Checksum OK for 5d48fb19553c15bbbac498afcb7cc8710a803716.patch.
=> SHA256 Checksum OK for fa9cd89a85b904615ebc11da609445b5b751e68d.patch.
===>  Patching for mesa-dri-24.1.7_9
===>  Applying distribution patches for mesa-dri-24.1.7_9
===>  Applying FreeBSD patches for mesa-dri-24.1.7_9 from 
/usr/ports/graphics/mesa-dri/files
===>   mesa-dri-24.1.7_9 depends on package: py311-ply>0 - found
===>   mesa-dri-24.1.7_9 depends on package: wayland-protocols>=1.8 - found
===>   mesa-dri-24.1.7_9 depends on executable: glslangValidator - found
===>   mesa-dri-24.1.7_9 depends on package: libclc-llvm20>0 - not found
===>  libclc-llvm20- Unknown flavor 'llvm20', possible flavors: llvm15 
llvm16 llvm17 llvm18 llvm19.
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/devel/libclc
*** Error code 1
==============================================================================================


Is there a plan to upgrade devel/libclc to build with llvm20 ? I'm 
actually not skilled enough to try by myself (and i did give a try)
i don't want to downgrade all my ports depending on llvm20 to 19

Regards,

Xavier

-- 
Xavier HUMBERT - Unix/Win/MacOSX Sysadmin/Network Engineer
https://www.amdh.fr