CMake:在启用语言之前,如何测试编译器 [英] CMake: Howto test for compiler, before enable a language
问题描述
在我的项目中,可以使用其他语言(nasm& fortran)来可选地编译某些代码,但是也可以在不安装这些编译器的情况下编译项目.例如.在Windows上.
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.
在使用enable_language启用语言之前,我想检查是否已安装编译器
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)
如果我使用 enable_language
而不进行其他检查,则CMake将停止并显示一条错误消息.
If I use enable_language
without an additional check, CMake stops with an error message.
(目前我正在检查 if(MSVC)
作为解决方法.)
(At the moment I check for if (MSVC)
as workaround.)
顺便说一句.我对Qt的检查也有类似的问题.检查不会因错误而停止,但会产生很多嘈杂的警告.
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.
推荐答案
所以请使用检查语言以检查是否可以启用一种语言.
So use check_language to check if a language can be enabled.
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