[cmake-developers] (no subject)

[Jano Svitok]

On Sat, Dec 2, 2017 at 10:45 AM, Lectem <lectem at gmail.com> wrote:

> Hi,
>
>
>
> I’m hurting an issue trying to hide dependencies from files that do not
> need those.
>
> For example, I have a library that helps me decode some file, but I don’t
> want this library headers to be available for every .cpp in my library but
> one.
>
>
>
> For example what one may do is the following :
>
>
>
> #---------------------
>
> add_library(mylib foo.cpp bar.cpp)
>
> target_link_libraries(mylib PRIVATE libonlyusefulforfoo)
>
> #---------------------
>
>
>
> It works fine, but now bar.cpp can also include headers from
> libonlyusefulforfoo.
>
> So what I tried was to use object libraries, but it has many
> disadvantages :
>
>    - I now have to duplicate dependencies for the object library and
>    mylib if they have include directories requirements or compile flags in
>    common
>    - An object library is a target… and I don’t want to add one target
>    per file that has special include directories
>    - An object library shows in IDEs, while I’d like the .cpp files to
>    stay in the same project. In visual the obj will be in my library but this
>    is not practical.
>
> I thought about source files properties, but unfortunately they do not
> support include directories, so here is my question :
>
>
>
> *TL ;DR*
>
> Would it be possible/difficult to have a PRIVATE_INCLUDE_DIRECTORIES
> property added for source files ?
>
> We already have COMPILE_FLAGS so why not include directories ?
>
>
>
> I know we can set include directories per directory, but I don’t think
> that putting single .cpp files in seperate headers is good.
>
>
>
> Thanks,
>
> Lectem
>

Did you check these?

https://cmake.org/cmake/help/v3.10/command/target_include_directories.html
https://cmake.org/cmake/help/v3.10/command/target_sources.html

Jano
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/cmake-developers/attachments/20171202/1a3278c6/attachment.html>