Henry Schreiner 4f82199bef Genex: Allow COMPILE_LANGUAGE to name a language that is not loaded ...

Evaluate to false on `$<COMPILE_LANGUAGE:Lang>` if language `Lang`
is not loaded.  This is helpful in exported targets consumed in other
projects that may not enable all the same languages.

Fixes: #17952

2018-05-03 08:34:39 -04:00

71 KiB

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