[cmake-developers] An option to set LINK_INTERFACE_LIBRARIES to empty on all shared library targets?

[Stephen Kelly]

Rolf Eike Beer wrote:

>>
>> Hi,
>>
>> In KDE we set the LINK_INTERFACE_LIBRARIES to empty in a wrapper around
>> add_library. The reason is to reduce the number of libraries which are
>> linked to by default - developers have to be explicit about what is in
>> the LINK_INTERFACE.
>>
>> I was considering patching CMake to do that by setting an option.
>>
>> http://thread.gmane.org/gmane.comp.kde.devel.buildsystem/6622/focus=72030
>>
>> Would such a feature of making
>>
>> set(CMAKE_SET_LINK_INTERFACE_EMPTY ON)
>>
>> cause the LINK_INTERFACE to be empty for all shared library targets be
>> accepted into CMake?
> 
> I personally am all into this, as this basically makes the same as the
> linker does when it gets passed --no-copy-dt-needed-entries --as-needed.
> 
> I would call it a bit different to make more clear what this is all about,
> something like CMAKE_NO_LINK_IMPLICIT_DEPENDENCIES.
> 
> The "tricky" part of this is to tell CMake to not enforce the implicit
> dependencies to be exported when creating an export file for targets
> created with this property enabled. Or better: to not enforce _any_
> dependencies of a shared library to be exported then.

I don't think I understand your description of the tricky part or your 
suggested solution. Can you expand on it?

> 
> Eike
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