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cmakefortrannasm

CMake: Howto test for compiler, before enable a language

In my project some code can be optional compiled in a different language (nasm & fortran), but it's also fine to compile the project without having these compiler installed. E.g. on Windows.

I would like to check if the the compiler are installed, before enabling the languages with enable_language

enable_language(ASM_NASM)
enable_language(Fortran)

If I use enable_language without an additional check, CMake stops with an error message.

(At the moment I check for if (MSVC) as workaround.)

Btw. I have a similar problem with the check for Qt. The check don't stop with an error, but generate a lot of noisy warnings.

Solution

  • So use check_language to check if a language can be enabled.