[CMake] Linker error with sub project's static libs

[Leif Walsh]

Are your libraries mutually dependent?  You may be hitting the
mutually-dependent static library problem.  Look for the word "mutual" near
the end of
http://www.cmake.org/cmake/help/v3.0/command/target_link_libraries.html,
that section explains some of what is going on.


On Thu, Aug 21, 2014 at 2:19 PM, Olaf Peter <ope-devel at gmx.de> wrote:

> Hello Marcel,
>
>  Olaf,
>>
>> Unless your code snippets are incomplete, I'm missing the following
>> statement in ./source/eea/ui/CMakeLists.txt
>>
>>      target_link_libraries(eea_ui_lib
>>          eea_ui_schematic_lib)
>>
>> I'm not sure this is causing the link error, but it's worth a try.
>>
> thank you a lot, this solves the linker problem - I have to add these
> twice, reference to the other lib each time.
>
>
>> Furthermore, I think the order of add_subdirectory(), add_library(), and
>> target_link_libraries() is important. You might want to check those as
>> well.
>>
> The order matches of course, but I haven't never such linker problems. The
> first time I'm using target_link_lib for a library self. The reason is not
> clear for me. What happens under the hood here?
>
>
> Thanks,
> Olaf
>
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-- 
Cheers,
Leif
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