Control: severity -1 minor On Sun, 14 Oct 2012 13:04:22 +0200 Guillem Jover <guillem@debian.org> wrote: Thanks Guillem, sorry I didn't get a chance to reassign this bug earlier. It's clearly not a dpkg problem. > On Sun, 2012-10-07 at 03:37:09 +0200, Guillem Jover wrote: > > On Mon, 2012-09-24 at 23:46:10 +0200, Gilles Filippini wrote: > > > Package: dpkg-dev > > > Version: 1.16.8 > > > Severity: normal This is a bug in the cross-building dependency resolution process, yes. The bug is that there is no such thing as a cross-build dependency resolver in Debian or Emdebian for use with packages processed by dpkg-cross. It has nothing to do with dpkg-dev. It is also not something which the current cross-building dependency resolution process can actually fix - the workaround just needs to be documented / forced to avoid expecting dependencies to be resolvable. > > > The change introduced to dpkg-checkbuilddeps in release 1.16.2, to check > > > build-dependencies against the target architecture (-a<arch>) breaks > > > cross-building with pdebuild-cross: dpkg-checkbuilddeps complains about > > > missing build-deps while they are correctly pulled by xapt + dpkg-cross. embuilddeps can (and should) install the dependencies for both architectures which would allow dpkg-checkbuilddeps to find the right dependencies for the *native* architecture. dpkg-checkbuilddeps will not be able to resolve dependencies handled by dpkg-cross and MultiArch cannot yet deliver a full cross-build support environment in Debian. > > Well, xapt + dpkg-cross mangle and repack foregin packages to make > > them installable on the native system, so the fact that this breaks > > now with multiarch is kind of expected. Exactly. dpkg-cross and MultiArch are *not* compatible in any way. MultiArch packages can be *forced* into dpkg-cross compliance but the two methods are completely independent. For any one package cross-build, only one method can be used to provide the cross dependencies. MultiArch isn't ready for cross-compilation in Debian yet, so we're left with dpkg-cross. > > > Workaround: add "-d" to DEBBUILDOPTS into > > > /etc/pdebuild-cross/pdebuild-cross.rc to inhibit dpkg-checkbuilddeps. Correct. If this needs to be documented in the manpage or simply enforced for certain versions of dpkg then that is the only step to be taken for this bug. No other fix is available in a world where dpkg-cross is still necessary because dependency resolution based on packages installed by dpkg-cross is not supported by any tool in Debian or Emdebian. > > You should preferibly get packages switched to multiarch. But maybe > > given that pdebuild-cross seems to be relying currently on xapt + > > dpkg-cross, then the workaround might need to be applied there for > > the time being. Otherwise there's really no bug in dpkg. Correct. The solution will be MultiArch. pdebuild-cross will not support MultiArch, there will be no need for it once enough -dev packages are properly converted to MultiArch. When dpkg-cross is finally removed, pdebuild-cross and xapt will be removed as well. -- Neil Williams ============= http://www.linux.codehelp.co.uk/
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