• Brad King's avatar
    enable_language: Fix test for working compiler with CMP0126 NEW behavior · 3ddd7f35
    Brad King authored
    Update the logic that converts a `try_compile` result from a cache
    entry to a normal variable to tolerate an existing normal variable
    under CMP0126 NEW behavior.  Otherwise the `try_compile` result
    is ignored because CMake uses the false value of the normal variable,
    and CMake incorrectly reports that the compiler does not work.
    This went unnoticed for some languages (e.g. C and CXX) because the
    check for a working compiler is skipped if ABI detection works.
    It does affect other languages (e.g. CSharp).
    Fixes: #22423