Rpath for not APPLE

[andresailer]

1. This setting of CMAKE_INSTALL_RPATH got lost in add correct rpath settings (for macos) #32
2. I am somewhat sceptical of CMAKE_INSTALL_LIBDIR, because that comes from GnuInstallDirs (right?), bu we don't set this everywhere? But it is used in the APPLE branch?
3. I need something like this for my nightlies put on clicdp cvmfs.

BEGINRELEASENOTES

• RPATH: set rpath to $ORIGIN/../${CMAKE_INSTALL_LIBDIR}

ENDRELEASENOTES

[andresailer]

Hi @tmadlener @gaede

Could you have a look at these changes and questions please?

Thanks!

[tmadlener]

Answers to the ones I actually have one:

I am somewhat sceptical of CMAKE_INSTALL_LIBDIR, because that comes from GnuInstallDirs (right?),

Yes.

bu we don't set this everywhere?

If by everywhere you mean everywhere in iLCSoft? Then most likely not. It's probably a slightly mixed bag at the moment between using it and CMAKE_INSTALL_PREFIX/lib.

[andresailer]

Good to merge? @tmadlener ?

[tmadlener]

I suppose you have tested this for the LCG stacks? In that case I think we can merge

[andresailer]

If by LCG stacks you mean the ilcsoft builds on top of LCG, then yes.
But there will be a build now, and then ClicPerformance tests hopefully don't fail for not finding libraries.