CompilerId/Features: Tolerate variables named for languages
If a CMakeLists.txt
or CMAKE_TOOLCHAIN_FILE
sets a variable named
C
, CXX
, or CUDA
, we were previously comparing each enabled
language name to the value of that variable, rather than the name
itself. Double-quote the string to take advantage of policy CMP0054
,
but also add "x" prefixes to support projects that do not set the
policy.
Fixes: #22125 (closed)