GLib是否可以检测操作系统？ [英] Is OS detection possible with GLib?

问题描述

是否可以确定我的Vala应用程序在哪个平台（GNU / Linux，Win32，OS X）上运行？

解决方案

由于Vala是一种编译语言（相对于中间语言或解释语言），因此您可以使用自己喜欢的构建工具和使用条件编译。

类似的东西：

< pre class = lang-cs prettyprint-override> #if WINDOWS
消息（在Windows上运行）；
#elif OSX
消息（在OS X上运行）；
#elif LINUX
消息（在GNU / Linux上运行）；
#elif POSIX
消息（在其他POSIX系统上运行）；
#else
消息（在未知操作系统上运行）；
#endif


构建工具必须通过 -D LINUX 等到编译器。

我会小心一点，只能这样做，因为这会适得其反。通常最好使用已经为您处理差异的跨平台库。

BTW：另请参见如何在C ++中完成。

Is it possible to determine on which platform (GNU/Linux, Win32, OS X) my Vala app is running?

解决方案

As Vala is a compiled language (as opposed to intermediate or interpreted) you can determine the platform using your favorite build tool and use conditional compilation.

Something like:

#if WINDOWS
    message ("Running on Windows");
#elif OSX
    message ("Running on OS X");
#elif LINUX
    message ("Running on GNU/Linux");
#elif POSIX
    message ("Running on other POSIX system");
#else
    message ("Running on unknown OS");
#endif

The build tool would have to pass -D LINUX, etc to the compiler.

I would be careful and only do something like this as a last resort, because it can backfire. Usually it's better to use cross platform libraries that already handle the differences for you.

BTW: See also how this is done in C++.

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