[CMake] target_link_libraries replacing fully-qualified library with -l<x>

[Brad King]

On 01/29/2015 10:32 AM, Chris Green wrote:
> I can confirm that replacing the text libtbb.so file containing the 
> INPUT instruction with a link to the library with the SONAME is 
> sufficient to solve the problem, at least as a short term workaround. 
> There is no importing of targets: this library is found with 
> find_library as part of a config.cmake file invoked as part of 
> find_package(). I don't know whether CMake is using readelf, objdump or 
> readlink, but it appears that something of that nature is being tried (a 
> quick search with ack revealed cmELF.{h,cxx}). If interpreting the INPUT 
> directive were to be added to that procedure, I think we would be very 
> happy. Should I put an entry in Mantis?

Nils is correct that GuessLibrarySOName is used.  I'd forgotten about that.

If you link tothis library using a full path manually, what is recorded
in the NEEDED field of the resulting binary?  Without SONAME many linkers
record the full path.  Does INPUT avoid that?

Thanks,
-Brad