Pbuilder
pbuilder is a tool to automatically build packages in a clean chroot of an arbitrary Debian/Ubuntu distribution.
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Instructions
At one moment, ragweed was the recommended server for building packages which had a slightly modified /etc/pbuilderrc and existing distribution images set up for more convenient building of packages.
Since december 2011, the recommended way it to use a labs virtual machine. Then one should use the misc::package-builder puppet class to get all needed tools.
Setup
This is now done by misc::package-builder in Puppet automatically. Modify misc/package-builder if it's not to your needs, or alternatively do it manually using the following steps. The first time, create a clean install image using e.g.:
# pbuilder create --distribution feisty
Notably, pbuilder doesn't set up a correct APT /etc/apt/sources.list in the chroot image, so it's best to use pbuilder login --save-after-login once after creating it, and replace its sources.list with an actual correct one.
Building
Then, when you want to build a package using this distribution image, use:
# pbuilder build --basetgz /var/cache/pbuilder/distribution.tgz package.dsc
If all goes well, you'll find the resulting package(s) in /var/cache/pbuilder/result.
Create a new distribution image using another filename:
# pbuilder create --distribution feisty --debootstrapopts --arch --debootstrapopts i386 --basetgz /var/cache/pbuilder/base-i386.tgz
Then to build a 32 bit package:
# linux32 pbuilder build --basetgz /var/cache/pbuilder/base-i386.tgz package.dsc
Forcefully include the source tarball
Sometimes dpkg-genchanges decides that the source doesn't need to be included. It is however needed for a new inclusion into the Wikimedia repository. You can force this with:
--debbuildopts "-sa"
Modifying the base image
To change something in the base image, for example to add an APT repository, use:
# pbuilder login --save-after-login
