Bug#910560: [choose-mirror] fails to build when parallel build is activated

[Philipp Kern <pkern@debian.org>]

On 2018-10-08 12:42, John Paul Adrian Glaubitz wrote:
> On 10/8/18 12:38 PM, Holger Wansing wrote:
> > Ok, so we have no package problem at all?
>
> Well, it builds fine on the buildds and it also does not show build 
> issues
> on reproducible-builds.org:
>
> > https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/choose-mirror.html
>
> > Should that bug be reassigned to jenkins.debian.org then, to make 
> > jenkins
> > happy on that topic, too?
> > jenkins seems to not having parallel builds activated?
> > Should probably use similar settings as the buildds, to give 
> > comparable
> > results?
>
> Controversial opinion: It should use sbuild instead of pbuilder. sbuild
> is more actively maintained and more reliable in my experience. sbuild
> is also what the buildds are using.

sbuild doesn't solve this particular problem either. You need to pass in 
DEB_BUILD_OPTIONS=parallel=n rather than setting --jobs. The latter is 
mapped to -j, which breaks (because it's put into MAKEFLAGS) and the 
former maps to -J.

Julien is right in that there is a bug here that's worth fixing but the 
default build environment which is incredibly hard to discover does not 
expose them.

Kind regards
Philipp Kern