Re: The state of cross building
On Sat, Jan 30, 2016 at 8:08 PM, Helmut Grohne <helmut@subdivi.de> wrote:
> Hi,
>
> Let me give a status update on how well cross building works in
> unstable.
>
> Toolchain
> ---------
>
> We have cross compilers and crossbuild-essential-* packages in unstable
> for quite a while now. (Thanks to Matthias Klose.) These tend to work
> well. Recently, sbuild saw significant improvements wrt. cross building
> such that now one can simply "sbuild --build=arch1 --host=arch2 ..." and
> have a reasonable expectation that it works. (Thanks to Johannes
> Schauer.) Also pkg-config now ships the symlinks to a working cross
> wrapper. (Thanks to Tollef Fog Heen.) Many more things have happened and
> the gist is that much of the toolchain just works now! :)
>
> Cross building the Debian archive
> ---------------------------------
>
> Debian unstable has about 22000 source packages. Out of those, about 5000
> source packages can satisfy their Build-Depends in a cross build
> setting. For failing packages, detailed diagnostics can be found at
> http://bootstrap.debian.net/cross_all.html. (Thanks to Johannes Schauer.)
>
> Out of those 5000 source packages, I selected 3000 popular (as in
> popcon) source packages and built them using debomatic (build arch =
> amd64, host arch = ppc64el). (Thanks to Luca Falavigna.) About 1000
> builds were successful (which doesn't imply that the resulting packages
> actually work.) We can conclude that about 4% of Debian can be cross
> built today.
>
> You can find the build logs at:
> http://subdivi.de/~helmut/debomatic-logs/
>
> Processing the logs
> -------------------
>
> I've hacked up a script that guesses failure reasons by scanning the
> logs with some regular expressions. Common issues are:
>
> * (>800) Using the build architecture compiler or linker.
> * (>150) Bug #812136 in dh_auto_build for cmake
> * (>130) configure fails due to missing values in config.site
>
> Bug reports
> -----------
>
> I would appreciate help with inspecting these build logs. To avoid
> duplicating work, I added a bug column to the log index and intend to
> update it when given a notice. Given the number of build failures, I
> believe that a mass bug filing would be counterproductive and ask that
> bugs reports are only filed when accompanied with a patch or a detailed
> analysis.
>
> Please follow up to debian-cross@lists.debian.org or stop by at
> #debian-bootstrap on irc.oftc.net if you have any questions regarding
> this effort.
>
> Helmut
>
Hi,
Could you document on wiki how can we begin as a package manager. For
instance I could not achieve to parse
http://bootstrap.debian.net/cross_all/imagemagick.html
Bastien
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