+++ Colin Watson [2012-12-09 14:05 +0000]: > On Sun, Dec 09, 2012 at 01:36:35PM +0100, Matthias Klose wrote: > > For toolchain packages like gcc-4.7, you can't deduce the build dependencies > > automatically. Cross building the gcc-4.7 package (not building the cross > > compiler) requires additional build dependencies, which for a native build > > are > > used from the current build. These are: > [...] > > If these should not be hard-coded in the build tools, then we do need some > > syntax for the control file to specify these cross build dependencies, best > > in a > > way which is independent of the target architecture. > > I think that's covered by something along the lines of Guillem's > profiles proposal, which would allow such things to be annotated with > <cross>.
Yes. I've done a couple of these in my test ubuntu-bootstrap repo and it works. And it allows package maintainers to do whatever is needed, so is flexible. The disadvantage is that in general package maintainers are clueless about this and in general would prefer some tool that 'knows about cross building' to do the automatic mappings which will usually work. I started a mail about this at the weekend to try and clarify my thinking on this subject but have not yet reached a proposal I am happy with. > I'd still like to be able to deduce as much as possible > automatically, though, because given the relatively small number of > people who care about cross-building it takes a very long time to > annotate lots of packages manually; the more we can do automatically the > better. yes. I don't really like the idea of doing this in sbuild, but pragmatically it'll probably work quite well and not get in other people's way. I would like to have a more general and convincing long-term plan. I'll carry on trying to work that up. It is a good subject for a 'cross-build sprint'. Wookey -- Principal hats: Linaro, Emdebian, Wookware, Balloonboard, ARM http://wookware.org/ -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
