CompilerRT: Normalize COMPILER_RT_DEFAULT_TARGET_TRIPLE (#88407)

If LLVM is configured with -DLLVM_DEFAULT_TARGET_TRIPLE, and the
argument is not normalized, such as Debian-style vendor-less triple,
clang will try to find libclang_rt in lib/<normalized_triple>, while
libclang_rt is placed into lib/<triple_arg>.

Let's also place libclang_rt into lib/<normalized_triple>.

GitOrigin-RevId: 00162162dd853795c532afa5dec4dc4e798d4a4b
1 file changed