Help: cryptic explanation of $<COMPILE_LANGUAGE> in cmake-generator-expressions(7)
cmake-generator-expressions(7) > Informational Expressions > $<COMPILE_LANGUAGE>
says:
The compile language of source files when evaluating compile options.
See the unary version for notes about portability of this generator expression.
I fail to understand the "when" clause. And I am completely lost with the second sentence. What is the "unary version"?