Google Summer of Code: Proposals and Mentors

[Rob]

On Thursday, 19 February 2015, Andoni Morales <ylatuya at gmail.com> wrote:

> 2015-02-18 20:21 GMT+01:00 Nirbheek Chauhan <nirbheek.chauhan at gmail.com
> <javascript:;>>:
> > On Wed, Feb 18, 2015 at 5:23 PM, Sebastian Dröge
> > <sebastian at centricular.com <javascript:;>> wrote:
> >> On Di, 2015-02-17 at 16:59 +0000, Luis de Bethencourt wrote:
> >>> GStreamer is going to apply for Google Summer of Code 2015. But we need
> >>> your help!
> >>>
> >>> We would really appreciate if you suggested proposals, volunteered for
> >>> mentoring, or added content to the proposals.
> >>>
> >>> Current list of proposals is here:
> >>> http://gstreamer.freedesktop.org/GSOC/socprojects.html
> >>
> >> Does anybody have any other ideas, or would like to be added as a
> >> potential mentor for any of these projects? Would be great to get some
> >> more ideas and potential mentors so we can properly handle all
> >> projects :)
> >>
> >
> > It might be useful to have a project to improve Cerbero.
> >
> > Cerbero's main use-case right now is to build binaries
> > tarballs/packages from upstream sources. It's quite difficult to use
> > it for other uses such as local development; which is a shame because
> > it's currently our best way of doing cross-compilation.
> >
> > List of deficiencies (Incomplete):
> > ==================================
> > 1) Local development is hard; current best way is to push to a custom
> > remote/branch
>
> For local development using cerbero to rebuild changes in a project is
> not the best approach to use. What I usually do is jumping into the
> development shell and use a repository checkout different from the one
> created by cerbero (eg: ~/git/gst-plugins-bad), configured with the
> same configure options, specially for the prefix. Than the development
> is make && make install as you would do with other setups, very
> similar to what is done with gst-uninstalled except that you need the
> extra make install step.


What about developing and building for platforms that are not the host
platform?

Best regards,
Rob




> > 2) Difficult to maintain multiple checkouts of Cerbero (gst 1.4,
> > master, custom, etc)
>
> Multiple checkouts can be maintained easilly with different
> configuration files that change the default paths used for the cache
> files, the installation prefix and the build dirs. So each build is
> built and installed in a different prefix using different cache files:
>
> home_dir = os.path.expanduser('~/cerbero-builds/gstreamer-master)
> cache_file = 'gstreamer-master-%s-%s' % (target_platform, target_arch)
>
> So end up having several config files that you can easilly change to
> target different builds:
> ./cerbero-uninstalled -c gstreamer-master.cbc
> ./cerbero-uninstalled -c gstreamer-1.4.cbc


You can't chain cbc files, right? So then you have to do this for every
platform cbc. Cool that you can though. :)

Rob





>
> But the lack of documentation is definitively a problem, since most of
> the useful scenarios for developing and other features like
> applications bundling and packaging are completely undocumented.
>
> I can also help mentoring in this project if it's needed.
>
> Andoni
>
> > 3) Downloaded-sources management is suboptimal (no checksums, etc)
> > 4) Built-sources management is supoptimal (mtime is compared, which is
> > often misleading)
> > 5) No way to "uninstall"/"wipeone" a recipe; need to wipe everything
> > 6) Essentially no documentation about how to use it
> > 7) More![1]
> >
> > A subset or a superset of these problems can be turned into a GSoC
> > project. The aim is not to turn Cerbero into a full-fledged package
> > management system, but something that at least fulfills basic
> > development requirements such as "don't arbitrarily rebuild everything
> > ffs". :)
> >
> > I volunteer myself to mentor/co-mentor this project[2] if we think
> > it's worth doing.
> >
> > Cheers,
> > Nirbheek
> >
> > 1. I'm sure Alessandro has many choice expletives he would love to
> > share with us on the matter
> > 2. I have experience being a GSoC student and a mentor with the Gentoo
> project
> >
> > --
> > ~Nirbheek Chauhan
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.freedesktop.org <javascript:;>
> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>
> --
> Andoni Morales Alastruey
>
> LongoMatch:The Digital Coach
> http://www.longomatch.ylatuya.es
> _______________________________________________
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> gstreamer-devel at lists.freedesktop.org <javascript:;>
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>
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