[CMake] are target_compile_definitions not transitive in cmake 3.12.1?

[Robert Maynard]

target_compile_definitions is transitive for PUBLIC/INTERFACE definitions.
Can you provide an example where that is failing?


On Thu, Aug 30, 2018 at 6:32 PM Mario Emmenlauer <mario at emmenlauer.de>
wrote:

>
> Sorry if this has been discussed before, I searched the mailing
> list and google but could not find this exact issue (only [1] and
> [2] that refer to library dependencies).
>
> I have a case where it seems target_compile_definitions() is not
> transitive (it is not passed down via libraries), is that possible?
> I have a project that sets a PUBLIC definition on libA, and during
> the build of libB that links libA the definition is applied. But the
> definition does not pass down to executables linking libB. This is
> confusing for me because library dependencies and includes seem to
> be transitive (linking libB also links libA automatically).
>
> Is it by design that target_compile_definitions() is not transitive
> in cmake 3.12.1? Or am I doing something wrong?
>
> [2] https://gitlab.kitware.com/cmake/cmake/issues/17633
> [1] https://gitlab.kitware.com/cmake/cmake/issues/12435
>
> All the best,
>
>     Mario Emmenlauer
>
>
> --
> BioDataAnalysis GmbH, Mario Emmenlauer      Tel. Buero: +49-89-74677203
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