Revision as of 14:17, 26 October 2011

OBS Light Deliverable

How to patch an i586 kernel for MeeGo with obslight?

Create a connection to an OBS server.

• You can execute commands where you want.
• If you don't have a connection to a OBS server you can use an OBS appliance.
• If you don't have any package in your project, you can use obstag and obs2obscopy to add some.

obslight addObsServer --serverApi https://api.meego.com --serverRepo http://download.meego.com/live --user obsuser --password opensuse

Create a local project.

• The projects are created in ~/OBSLight/MeeGo_1.2_oss/

obslight addProject --projectLocalName MeeGo_1.2_oss --projectObsName MeeGo:1.2:oss --obsServer https://api.meego.com --projectArch i586 --projectTarget standard

Add a package to your local project.

• The packages are created in ~/OBSLight/MeeGo_1.2_oss/MeeGo:1.2:oss/kernel/

obslight addPackage --projectLocalName MeeGo_1.2_oss --package kernel

Create your chroot.

• The chroot directory is ~/OBSLight/MeeGo_1.2_oss/aChroot/.
• The chroot is created with zypper and your repositorie is automatically added.

obslight createChRoot --projectLocalName MeeGo_1.2_oss

Add a package into your chroot.

• The packages are installed at directory /root/rpmbuild/BUILD/kernel-X.X.X/linux-X.X.X.
• After the installation, a git repository is created at the packages's directory.

obslight addPackageSourceInChRoot --projectLocalName MeeGo_1.2_oss --package kernel

Now you can work into your chroot.

• The directory ~/OBSLight/MeeGo_1.2_oss/chrootTransfert/ is mounted into the chroot in /chrootTransfert/.
• Every scripts execute in aChroot, are stored in /chrootTransfert/ as runMe_YYYY-MM-DD_HHhMMmSS.sh.

obslight goToChRoot --projectLocalName MeeGo_1.2_oss --package kernel 
# cp configs/kernel-x86.config .config 
# make menuconfig
# cp .config config-x86

You have two solutions to upstream your work to the OBS server.

• By making a patch

# exit
obslight makePatch --projectLocalName  $ProjectName  --package $Package --patch myKernelPatch.patch
vi ~/OBSLight/MeeGo_1.2_oss/MeeGo:1.2:oss/kernel/kernel.spec 

You must move your patch command %patchXXX -p1 after the command line cp $RPM_SOURCE_DIR/config-* .

• By copying the new configuration file

# cp config-x86 /chrootTransfert/config-x86
# exit
cp /chrootTransfert/config-x86 ~/OBSLight/MeeGo_1.2_oss/MeeGo:1.2:oss/kernel/

Now you can commit.

• The command addAndCommitChanges ckeck the add and the delete files, before commit the package.

obslight addAndCommitChanges --projectLocalName $ProjectName --package $Package -m "Patch kernel"

How to patch an ARM kernel for MeeGo with obslight?

It's the same approach than with i586 architecture.

• You can't use the kernel package, because it has flags to prevent builds on ARM. Use for example the kernel-adaptation-n900 package.

obslight addObsServer --serverAPI https://api.meego.com --serverRepos http://download.meego.com/live --user obsuser --passw opensuse
obslight addProject --projectLocalName MeeGo_1.2_oss --projectObsName MeeGo:1.2:oss --obsServer https://api.meego.com --projectArchitecture armv8el --projectTarget standard 
obslight addPackage --projectLocalName MeeGo_1.2_oss --package kernel-adaptation-n900
obslight createChRoot --projectLocalName MeeGo_1.2_oss
obslight addPackageSourceInChRoot --projectLocalName MeeGo_1.2_oss --package kernel-adaptation-n900

Some errors you may encounter:

• Problem: nothing provides X needed by Y
• error: Architecture is not included: armv8el
• chroot: failed to run command `sh': No such file or directory

obslight goToChRoot --projectLocalName MeeGo_1.2_oss --package kernel-adaptation-n900
# cp configs/kernel-adaptation-n900.config .config
# make menuconfig
# cp .config config-adaptation-n900
# exit
vi ~/OBSLight/MeeGo_1.2_oss/MeeGo:1.2:oss/kernel-adaptation-n900/kernel-adaptation-n900.spec

You must move your patch command %patchXXX -p1 after the command line cp $RPM_SOURCE_DIR/config-* .

obslight makePatch --projectLocalName  MeeGo_1.2_oss  --package kernel-adaptation-n900 --patch myKernelPatch.patch
obslight addAndCommitChange --projectLocalName  MeeGo_1.2_oss  --package kernel-adaptation-n900 -m "Patch kernel"

How install the dependency of a package into the chroot?

If the project on your OBS doesn’t provide some dependencies and you must add a repository to your chroot's zypper configuration, you have two choices:

• First one, use an URL and an alias:

obslight addRepoInChRoot --projectLocalName MeeGo_1.2_oss --url http://download.meego.com/live/MeeGo:/1.2:/non-oss/MeeGo_1.2/ --alias "MeeGo_non-oss"

• Second one, add the repository of another local project:

obslight addRepoInChRoot --projectLocalName MeeGo_1.2_oss --fromProject $ProjectName