[CMake] cmake end user vs. developer rpath handling

[Aaron Cohen]

Is it not feasible to just let the build system do whatever it is going to
and use "chrpath" or "patchelf" to change the rpath after-the-fact?

On Wed, Oct 9, 2019 at 11:48 AM DIXON, MARK C. <mark.c.dixon at durham.ac.uk>
wrote:

> On Wed, 9 Oct 2019, Craig Scott wrote:
> ...
> >>> Is there a way to reliably add to, or at least override, the
> developer's
> >>> rpath in any cmake-built software?
> >>
> >> Short of editing the build system scripts? I doubt...
> >
> > The CMAKE_INSTALL_RPATH variable is used to initialise the INSTALL_RPATH
> > property of a target when that target is created. If you are pulling in
> > these other projects via add_subdirectory() rather than building them
> > standalone, you could modify the INSTALL_RPATH property of the targets
> you
> > want to change from within your own top level project after
> > add_subdirectory() returns.
> ...
>
> Thanks for this. My knowledge of cmake is pretty poor - I assume it uses
> the same definition of target as make. So you're saying I'd need to know
> the project's interesting targets first.
>
> My choices are: maintain a patch to the software's build system files or
> maintain a patch to encaspulate the software's build system files and
> drive with a config file. Right?
>
> Thanks,
>
> Mark
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