[CMake] How to build 2 targets from the same source, differing in -D_SWITCHES_ only

[Christian Ehrlicher]

> Von: "Marcel Loose" <loose at astron.nl>
> CC: cmake at cmake.org
> Betreff: Re: [CMake] How to build 2 targets from the same source,	differing in -D_SWITCHES_ only

> Hi Eike,
> 
> I think the only safe and reliable way to do this is create several
> build directories, e.g. build/type_1 and build/type_2.
> When running cmake in build/type_1, you should add -D_TYPE1_ to the
> preprocessor flags; same for build/type_2.
> 
Why? Does SET_TARGET_PROPERTIES() with COMPILE_FLAGS not work?


Christian
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