| === asac_ is now known as asac | ||
| === lbt is now known as _ | ||
| === _ is now known as lbt | ||
| lbt | hi ... more Mer packaging/building stuff :) I need to build glibc - how do I limit the architectures it builds for to just i586 ? | 12:57 |
|---|---|---|
| lbt | does just trimming /debian/rules.d/control.mk debian/control.in/libc6: -e 's%@archs@%amd64 arm armeb armel i386 lpia m32r m68k mips mipsel powerpc ppc64 sparc s390 hppa sh3 sh4 sh3eb sh4eb%g' < $< > $@ work | 12:59 |
| lool | lbt: Hmm why do you need to limit that? | 13:23 |
| lbt | I'm building it to do a cross-build in OBS | 13:24 |
| lool | Is it a problem if OBS builds it on other arches? | 13:24 |
| lbt | nah, I just want to speed it up and avoid all the build-deps etc | 13:24 |
| lbt | the plain build-dep doesn't specify libc6-dev | 13:25 |
| lool | It sounds like your change is specific to OBS, not really to your source package, so probably you want an OBS config to only build on certain arches or a wrapper which takes a source package and strips all arches except the one you want? | 13:25 |
| lbt | well, OBS is driven by the dsc | 13:25 |
| lbt | it just runs dpkg-buildpkg | 13:25 |
| lbt | inside a chroot | 13:25 |
| lbt | but it pre-installs based on the build-depends | 13:26 |
| lool | Yes, but it is worth it to maintain extra delta in all your .dscs just to speed up OBS builds? | 13:26 |
| lbt | this is a specific task :) | 13:26 |
| lool | Instead, you could change the control file before OBS builds | 13:26 |
| lbt | yes | 13:26 |
| lbt | this is just for one build - it's to do with cross-building | 13:26 |
| lool | Can you use a modified dpkg-dev for instance | 13:26 |
| lbt | phone | 13:27 |
| lool | Oh ok; then I guess you can just edit control | 13:27 |
| * ogra wonders what you gain from OBS over a PPA | 13:27 | |
| ogra | which builds x86/amd64 only anyway | 13:28 |
| lbt | sec | 13:29 |
| lbt | long call :) | 14:03 |
| lbt | lool - yes, I removed the none x86 looking things from control.mk. .... this gives me a glibc_2.9-4ubuntu6obs1 | 14:04 |
| lbt | ogra: OBS builds armel | 14:04 |
| ogra | right, you asked for "building only on x86" though ;) | 14:05 |
| lbt | yes - I want to build glibc i586 | 14:05 |
| lbt | and then package it in an armel .deb | 14:05 |
| lbt | <grin> | 14:05 |
| ogra | err | 14:05 |
| lbt | http://en.opensuse.org/Build_Service/Cross_Build | 14:05 |
| lbt | "scratchbox done right" | 14:06 |
| ogra | well | 14:06 |
| ogra | https://wiki.ubuntu.com/ARM/BuildEABIChroot | 14:06 |
| lbt | tongue-in-cheek | 14:06 |
| Stskeeps | ogra: yeah, that's part of the solution, now drop in x86 bash, gzip and cross compiler gcc :P | 14:07 |
| ogra | pfft, just build your stuff with native tools | 14:07 |
| lbt | we do | 14:07 |
| lbt | Qt takes 40 hrs | 14:07 |
| ogra | in the chroot i mean | 14:07 |
| lbt | we do | 14:07 |
| lbt | that's how OBS works | 14:07 |
| lbt | AFAIK the OBS guys helped write the patches to qemu mentioned on that page | 14:08 |
| lbt | now OBS also lets us run the chroot easily on the desktop | 14:09 |
| lbt | so these native binaries will help make the desktop devel/debug cycle quicker and avoid my users bitching at me :) | 14:09 |
| ogra | right, i just dont get what you do with the x86 binaries | 14:09 |
| lbt | we install them into eg /lib-x86/bin/bash | 14:10 |
| Stskeeps | we accelerate the builds with native tools basically :) | 14:10 |
| lbt | then we install a set of .so into /lib-x86/lib | 14:10 |
| ogra | well, mesa compiles in the eabi chroot in 2h here ... | 14:10 |
| lbt | and modify ldlinux.so and glibc/rt to look in /lib-x86 | 14:10 |
| ogra | not sure i understand what you speed up with using the x86 tools | 14:11 |
| lbt | and then replace /bin/bash with symlink to /lib-x86/bin/... | 14:11 |
| ogra | mesa x86 compiles in pbuilder on the same machine in the same time | 14:11 |
| Stskeeps | ogra: your method would use gcc built for ARM, right? :P | 14:11 |
| ogra | indeed | 14:11 |
| lbt | and qemu/armel gcc is 10x slower than 586 gcc | 14:12 |
| ogra | the gcc 4.4.0 we use in karmic | 14:12 |
| ogra | it isnt | 14:12 |
| ogra | feel free to try it out | 14:12 |
| lbt | we do | 14:12 |
| lbt | the entire Mer distro is built just like that | 14:12 |
| ogra | in OBS | 14:12 |
| lbt | qemu/armel gcc | 14:12 |
| lbt | yes, or locally | 14:13 |
| Stskeeps | ogra: you're telling me x86 cross-compiler targetting armel is just as fast as qemu-arm (user level) emulated gcc? :P | 14:13 |
| ogra | i just did two builds of mesa today, there is no speed difference at all between the builds on the same HW here | 14:13 |
| ogra | well, probably a few minutes but not noticeable at all | 14:14 |
| lbt | I think you must be using a cross-compiler | 14:14 |
| Stskeeps | when doing big builds it makes a difference - and if you can cut off a minute per build in your queue, that's a lot :P | 14:14 |
| ogra | qemu-system-arm is definately slow, fully agreed | 14:14 |
| lbt | yes | 14:14 |
| lbt | that's what we (have to) use | 14:14 |
| lbt | anyhow... this is all mainly 'interesting' | 14:15 |
| Stskeeps | lbt: it's not qemu-system-arm in use though :P | 14:15 |
| ogra | do you have an ubuntu desktop machine around ? | 14:15 |
| ogra | just try it :) | 14:15 |
| lbt | OBS is a GPL solution to do multi-distro builds | 14:15 |
| ogra | takes 10 mins to set up a chroot ... another 2 to install build-essential in the chroot ... | 14:16 |
| Stskeeps | ogra: we did try over several packages to do gcc built on armel for armel - it's dog slow and can be accelerated 50-60% with simple tricks :P | 14:16 |
| lbt | ah, qemu-system-arm ... OK, misunderstood. We're using binfmt-misc | 14:17 |
| lbt | anyhow, as I said, it's A.N.Other tool that we use :) | 14:17 |
| ogra | (that whole conversation should be in #ubuntu-arm btw) | 14:17 |
| lbt | and I appreciate the help getting glibc to build | 14:17 |
| lbt | very true... | 14:18 |
| lbt | I just pop in here to see how Ubuntu-MID is coming along | 14:18 |
| lbt | we haven't seen any of you guys for a while | 14:18 |
| ogra | MID moved to mer and to being built by the community, not sure who is in the new MID team | 14:19 |
| ogra | persia has some insight in that afaik | 14:19 |
| lbt | has he been around much | 14:20 |
| ogra | i think he is massively busy | 14:21 |
| lbt | OK, say hello from Mer if you see him :) | 14:21 |
| ogra | will do :) | 14:22 |
| ogra | will you guys be at the maemo summit ? | 14:22 |
| lbt | oh yes | 14:22 |
| ogra | well, then we might meet | 14:22 |
| Stskeeps | yeah, i'll be doing a presentation and lbt got a free trip at the developer weekend ;) | 14:22 |
| === amitk_ is now known as amitk | ||
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