Tianjiao Nie

The path to lld is detected by invoking `clang empty.cc -v` and inspect the last line of the output: https://github.com/bazelbuild/rules_cc/blob/30977f259bef40b4b9930868ecaf84c5b8a300c6/cc/private/toolchain/unix_cc_configure.bzl#L200-L201 However lld may emit warnings (see below) building `empty.cc` and...