115a6f077f
LLVM 12 added the memory profiling runtime and LLVM 13 the ORC runtime. Both need a libc in order to build (or at least headers not present in clang's resource root), so we'll disable them for any sort of baremetal-ish build. memprof likely doesn't work in a baremetal situation at all, orc is unknown. Whether both would compile with musl is to be checked.