[cmake-developers] target_link_libraries and --start-group/--end-group ?

[Gregor Jasny]

Hello,

On 05/01/15 20:09, Robert Goulet wrote:
> My project needs to link with an external library which actually consist
> of a set of libraries. Adding these libs using target_link_libraries
> should be working just fine but unfortunately these libs have a bunch of
> circular dependencies, so it fails. In the makefile, we link with these
> libs using this syntax:
>
> -Wl,--start-group …libs… -Wl,--end-group
>
> …so that the linker is able to correctly find all symbols. What’s the
> proper way to deal with this using CMake? I tried to add the group flags
> to target_link_libraries but it does not work. Thanks!

I'm not 100% sure that this also works with circular dependencies, but 
you could create an IMPORTED target per library and declare its 
dependencies via INTERFACE_LINK_LIBRARIES.

Adding the imported ones to your executable should do the right thing.

Thanks,
Gregor

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