I gave it a shot and tried an amd64 bulk build with LLVM 18. The good news is that there were only four build failures. The bad news is that the cython one prevented the interesting 1/3 of the tree from any attempt at building.
devel/gconf2 cc: error: unknown argument: '-export_dynamic' devel/mklittlefs variable length arrays in C++ are a Clang extension lang/cython,python3 LLVM ERROR: out of memory textproc/p5-SWISH-API Failed to create index file 't/index.swish-e -- Christian "naddy" Weisgerber na...@mips.inka.de