[CMake] CMake & RPM problems

[Alexander Neundorf]

On Sunday 10 May 2009, Eric Noulard wrote:
> 2009/5/9 Alexander Neundorf <a.neundorf-work at gmx.net>:
> > On Thursday 07 May 2009, Eric Noulard wrote:
> > ...
> >
> >> 1) Add more CPACK_RPM_XXX specific var such like:
> >>      CPACK_RPM_POST_INSTALL_SCRIPT_FILE
> >>      CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE
> >>
> >>      which may be used to specify the corresponding scripts
> >>      that will be embedded in the generated spec file.
> >
> > Just a thought, do you think this could in some way with the
> > INSTALL(SCRIPT/CODE ... ) command ?
> > I guess quite often this already does what is required (at least in KDE
> > it also does the update-icon-cache etc. stuff).
> > But a problem would be that then cmake would be necessary when installing
> > such a RPM :-/
>
> Yes I did think about that too just as you did.
> In fact the notion of install-time script may be supported by various
> CPack generator (DEB, RPM , NSIS etc...).

Yes.

> It would be a good thing to either:
>    - launch INSTALL(SCRIPT/CODE ... ) with an extra cmake dependency
>      (the dependency may be added by the generator if it knows that
>       there exists some INSTALL(SCRIPT/CODE ... ) rules)
>
>   - translate INSTALL(SCRIPT/CODE ... ) into it's own supported language.
>     For example RPM uses bash and I'm pretty sure CMake scripts may
>     be translated into shell scripts.
>     That would be nicer (no extra dependency) but surely harder to
> implement.

Yes.

>
> Another thing I did not look at is "WHEN" INSTALL(SCRIPT/CODE ... )
> are launched?
> In RPM you can usually chose between pre-install scripts and
> post-install scripts
> (and their uninstall counterpart).
>
> Currently the INSTALL(SCRIPT/CODE ... ) script is too loose, moreover
> as far as I know there aren't any "uninstall rules"...
>
> So currently I think we can get INSTALL(SCRIPT/CODE ... ) to be embedded
> into RPM post-install rules, I do have to find where thoses scripts
> are generated though.
>
> There will be several remaining issues:
>     1) You usually don't want to run "INSTALL(SCRIPT/CODE ... )" when
> building the RPM, however now since CPack basically do install with
> relocation they are.

Hmm, yes, usually, but maybe sometimes you do want to run them...

>     2) There is no associated "uninstall" rules, which is just bad
> because you may
>          leave dangling menu entry and/or icon.

Hmm ?

>     3) You ger an extra cmake dependency ...
>
>
> Alex,
> Does KDE uses INSTALL(SCRIPT/CODE ... ) ?

Yes.

> If yes how do packager do for handling that in DEB, RPM ... ?

This is done completely independent.
The official distribution packager build their packages themselves anyway.

Alex