[CMake] cmake --find-package deprecated?

[Jeandet Alexis]

Hi Alexander, all,

here is a WIP patch
https://gitlab.kitware.com/cmake/cmake/merge_requests/2017

Any advise, help on how to improve this is welcome.

Alexis.
On Tue, 2018-04-03 at 22:00 +0200, Alexander Neundorf wrote:
> On 2018 M04 3, Tue 16:01:58 CEST jeandet wrote:
> > Hi all,
> > 
> > Reading the documentation I can see:
> > https://cmake.org/cmake/help/v3.11/manual/cmake.1.html?highlight=fi
> > nd%2
> > 0package#find-package-tool-mode id="-x-evo-selection-start-marker">
> > "
> > Note
> > 
> > This mode is not well-supported due to some technical limitations.
> > It
> > is kept for compatibility but should not be used in new projects.
> > "
> > 
> > Does this means that:
> >   1) We will always support this but it's limited.
> >   2) We will be supported for a long time, but you shouldn't use
> > it.
> >   3) We plan to remove this soon, don't use this!
> 
> I think it's in 2).
>  
> > In fact this mode would really be useful outside of CMake, to use
> > libraries/stuff which doesn't provide pc files but only CMake
> > packages.
> > Even if this has limitations, it's better than nothing.
> 
> Yes, that was my motivation a few years back.
> There is even a cmake.m4 which adds a cmake_find_package macro for
> configure.
> 
> Since then, there was close to no feedback.
> I also can't remember any volunteer contributions for this feature.
> Currently it has more limitations than it had 7 or 8 years ago or so.
> 
> The idea was to run cmake in script mode, and basically just execute
> the 
> requested FindFoo.cmake script, which basically searches a set of
> directories 
> and returns the results.
> With imported targets, their link interfaces and e.g. generator
> expressions 
> things got more complicated.
> 
> I'd be happy if somebody picks up the work and makes this feature
> work 
> properly.
> 
> Alex
>