vs_link_exe / vs_link_dll ignores CMAKE_RC_COMPILER

vs_link_exe / vs_link_dll require rc.exe to be in your path in order to succeed. I realise these are internal functions, but they're called as part of the initial compiler identification. If I configure CMake with:

CMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang-cl.exe"
CMAKE_LINKER="C:/Program Files/LLVM/bin/lld-link.exe"
CMAKE_RC_COMPILER="C:/Program Files (x86)/Windows Kits/10/bin/x64/rc.exe"

Then I would expect CMAKE_RC_COMPILER to be used in-place of a hardcoded rcCommand.push_back("rc"); (cmcmd.cxx, line 1794).

It's worth noting that CMAKE_LINKER must be an absolute path, else linking will fail as well.