llvm_rc: add llvm_rc option filter to correctly pick up all options
Question from original description
The introduction of the llvm_rc option filtering breaks the tests which could run without llvm_rc being available.
@brad.king: How should we go about this ?
- remove the tests
- run the some tests using llvm_rc when the tool is available ?
Fixes: #21315 (closed)
Topic-rename: llvm-rc-CMAKE_RC_FLAGS
Edited by Brad King