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Building Mer David Greaves / lbt

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Building Mer OBS

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What is OBS? <ul>Open Build System: Source -> Binary -> Package -> Repository Fully GPL Huge thanks to Suse / Novell for creating OBS in an open manner OBS ..... Suse / Novell (cf Qt ..... Nokia) </ul>

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What is OBS? OBS Scratchbox cf

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What is OBS? <ul>Benefits <ul>Developers Maintainers Maemo Community </ul>Drawbacks <ul>Oriented towards full builds not compile+test Lots of “:”s Emulation-mode compile.... for the moment accelerated compilation </ul></ul>

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Using OBS <ul>Screenshot: </ul>

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Using OBS <ul>Screenshot: </ul>

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Using OBS <ul>Screenshot: </ul>

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Using OBS <ul>Screenshot: </ul>

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Using OBS Service to Build Remotely <ul>Remotely <ul>Like an old-fashioned centralised VCS <ul>When you check-in a package it's scheduled and built All target repositories and architectures </ul>Then any dependendent packages are rebuilt Status overview provided Live Logs </ul></ul>

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Using OBS to Build Locally <ul><ul>Install: <ul>apt-get install osc qemu </ul>Checkout : <ul>osc co Maemo:Mer:Testing/qtablet </ul>Build: <ul>osc build Maemo:Mer:Testing armv5el qtablet_0.1.dsc </ul></ul>..........................Coffee <ul>Copy .deb to tablet and install </ul></ul>

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Packaging <ul>Maemo packaging process Modify, compile, test, build locally Update debian/changelog “ debuild -S” to create updated .diff and .dsc “ osc addremove” and “osc commit” </ul>

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OBS Projects, Packages and “Repositories” <ul>An OBS Project is a collection of packages and has a number of “repositories” A “repository” defines the base package collection used to satisfy build dependencies Two kinds: <ul>Other projects Download on demand </ul>Key Download on demand: <ul>Ubuntu 9.04 armv5el / i586 Debian 5.0 armv5el / i586 </ul>Names like “Maemo:Mer:Devel:UI/MerDevel_Ubuntu9.04 armv5el” </ul>

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Developing for Mer <ul>'Core' Structure <ul>Maemo:Mer:Devel & :<areas> Maemo:Mer:Testing Maemo:Mer:0.15 Maemo:Mer:Stable </ul>HW Specifics in each project: <ul>:HW:N8x0 :HW:Freerunner :HW:SmartQ :HW:Marvell :HW:HTC :HW:Beagle </ul></ul>

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Developing for Mer <ul>Submit to autobuilder and it goes into 'Extras' Structure <ul>Maemo:Mer:Extras:Devel Maemo:Mer:Extras:Testing Maemo:Mer:Extras:Stable </ul>Each builds 12x .... against <ul>:Devel and :Testing and :Stable Ubuntu and Debian i586 and armel </ul>Independent release cycle... per package </ul>

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Developing for Mer <ul>Home project <ul>home:lbt:Extras </ul>Has repositories for: <ul>:Devel and :Testing and :Stable i586 and armel </ul></ul>

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osc commands <ul>osc <ul><ul><li>co Checkout a package or project

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add / rm / addremove Add a dsc or tar.gz or a diff.gz

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commit Send new files to server

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up Update - get changes

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build Download build-deps, create chroot, run dpkg-buildpkg

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repos Show the available repos to build

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ls <proj> List packages

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meta pkg/proj/... Add/remove dis/enable packages & build targets </li></ul></ul></ul>

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Gitorious and Branches

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Gitorious and Branches

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Gitorious and Branches

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Acceleration <ul>Qemu is used to emulate on a binary-by-binary level using binfmt-misc Be nice to replace qemu binaries with i586 binaries <ul>bash, gzip, make, tar, </ul>Problem with .so library paths fixed with patchelf / chrpath Toolchain replaced with a slightly modified gcc-cross If we install these binaries in a chroot we get 5x to 10x performance increase Same source as if using arm binaries – unlike scratchbox </ul>

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Issues for Mer <ul>Patents... <ul>the Novell service won't accept mp3 software </ul>Ubuntu universe <ul>isn't on Novell service </ul>Access control <ul>No fine grained control over packages </ul></ul>

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Talk to Us IRC #mer on freenode.net Microblogging..... Mer Chatter [email_address] highlights of 'interesting' activities Summary at http://wiki.maemo.org/Mer/Build

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Thanks <ul>Carsten Munk Martin Mohringer (ScriptRipper), Adrian Schröter (AdrianS) Marcus Rückert (darix) Jan-Simon Möller (dl9pf) Riku Voipio (suihkulokki) rest of the teams testers, documenters, community </ul>