This asks the clang if it has its own preference for ld.lld. This is to mirror what we are doing to find GNU ld, and to make sure we are using the linker clang is using. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This introduces a new cmake module FindLlvmLld.cmake to do the work to discover LLVM lld linker. Signed-off-by: Daniel Leung <daniel.leung@intel.com>