Pbuilder depends which is a virtual package

Differences with pbuilder pbuilder-dist does apparently not yet support all kinds of operations. It can support multiple pbuilders for different architectures and releases of both Ubuntu and Debian. Updating a chroot to another version of ubuntu For new packages you need a chroot of the current distribution under development of Ubuntu. Then you can start building packages for the next version of ubuntu.

Building an i pbuilder on amd64 One of the things a pbuilder is useful for is building i packages on an amd64 machine. You can create an i chroot with the command: sudo pbuilder create --debootstrapopts --arch --debootstrapopts i If you're interested in using pbuilder to build on other architectures, you should read the next section on multiple pbuilders.

Multiple pbuilders When you work with packages, you often want to have multiple pbuilders on your machine, if for example you want to backport to Bionic or Xenial while developing on the development version of Ubuntu currently Eoan. Or maybe you want to build your packages for Debian and have them merged back to Ubuntu.

The next sections will provide some information to get you started with using multiple pbuilders. Update debootstrap It is recommended to use an updated version of debootstrap from the backports repository of whatever version of Ubuntu you are using.

You can either activate the backports repository in your sources. The updated version will have support for newer distributions, such as the development branch of Ubuntu. Change base. On the command line, this can be specified with the 'basetgz' option. Either comment these lines out or change the lines to suit your needs. NOTE: If you are using ubuntu, and wish to create a debian chroot, you need to install the debian-archive-keyring package.

If ARCH is set to a different architecture when running pbuilder, pbuilder will be set to create an environment to build packages for the architecture specified in ARCH. This can be achieved using pbuilder hooks. More can be specified, although these are two common ones to backport. You should keep packages that are backported for your pbuilder environment at a minimum. Note: Don't forget to use --override-config and then pbuilder update to take the new repository into account.

Troubleshooting "pbuilder create" Make sure that you have debootstrap later than X installed. The version from hardy will not suffice. Install from backports or backport yourself if necessary. This normally occurs only when creating base tarballs for development versions of Ubuntu or Debian for example, Debian sid. These are development versions and it is best to wait and try at a later date to create a base tarball.

It can be days however sometimes weeks until creating a base tarball will be successful for these development versions. In summary: Set up your pbuilder image so it checks your local repo for updates.

Set up a hook to update your repo every time you build. Improve this answer. Does updating the pbuilder image works well for you?

Those documents describe exactly the solution I'm trying to avoid: perform an additional update step before building. Sign up or log in Sign up using Google.

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Podcast The first ten years of our programming lives. Upcoming Events. Featured on Meta. Now live: A fully responsive profile. Candidate changes in Moderator Election — review your ballot. Related 2. Hot Network Questions. This snippet comes from Ondrej Sury. To make distinguishing bash prompts inside pbuilder easier, it is possible to set environment variables such as PS1 inside pbuilderrc. With versions of bash more recent than 2.

In prior versions of bash, [7] setting PS1 in pbuilderrc worked. Bash prompts will help you remember that you are inside a chroot. There are other cases where you may want other signs of being inside a chroot. Use of dedicated tools such as apt-proxy is recommended, since caching of packages would benefit the system outside the scope of pbuilder. You might see a lot of warning messages when running pbuilder. It is currently safe to ignore this warning message.

For example, dpkg requires getpwnam to succeed inside chroot, which means LOGNAME and the related user information have to be set up inside chroot. It should be obvious that essential packages should not be removed from a working Debian system, and a source package should not try to force removal of such packages on people building the package.

By default, pbuilder uses hard links to manage the pbuilder package cache. It is not possible to make hard links across different devices; and thus this error will occur, depending on your set up.

If this happens, set. It is possible to use fakechroot instead of being root to run pbuilder ; however, several things make this impractical. However, some binaries do not use libc to function, or override the overriding provided by fakechroot.

One example is ldd. Inside fakechroot , ldd will check the library dependency outside of the chroot, which is not the expected behavior. To work around the problem, debootstrap has a --variant fakechroot option. Use that, so that ldd and ldconfig are overridden. If you see messages such as this when building a chroot, you are mounting the file system with the nodev option. You will also have problems if you mount the file system with the noexec option, or nosuid.

This is not a problem when using user-mode-linux. See for example. The slowest part of pbuilder is extracting the tar. That can be avoided by using pbuilder-user-mode-linux.

It is more friendly to the hard drive. To sign a package marking it for sponsorship, it is possible to use --auto-debsign and --debsign-k options of pdebuild. When running pdebuild , pbuilder will run dpkg-buildpackage to create a Debian source package to pass it on to pbuilder.

It is harmless unless you try to upload it to the Debian archive. This behavior is different when running through --use-pdebuild-internal. It is possible to use pbuilder to run packages, using linux32 and the debootstrap --arch option.

Specifically, a command-line option like the following will work. To improve speed of operation, it is possible to use tmpfs for the pbuilder build location. The pdebuild command can be used with the svn-buildpackage --svn-builder command-line option: [8].

To report bugs, it would be important to have a log of what's going wrong. Most of the time, adding a --debug option and re-running the session should do the trick. Please send the log of such a session along with your problem to ease the debugging process. There is a mailing list for pbuilder on alioth pbuilder-maint lists. For coordination and communication, IRC channel pbuilder on irc.

Please log your intent there when you are going to start doing some changes and committing some change. This section tries to document current development practices and how things generally operate in development.

A git repository is available through http, git, or if you have an account on alioth, ssh. The second line is empty, and the rest should describe the background and extra information related to implementation of the commit. Test-suites are available in the. Changes are expected not to break the test-suites. Currently, run-test. When making changes, they should be documented in the Git commit log. Make the first line of your commit log meaningful, and add any bug-closing information available.

It's mostly not well-maintained, but hopefully it will be more up-to-date when people start using it. Emacs todoo-mode is used in editing the file. When releasing a new version of pbuilder , the version is tagged with the git tag X. XXX version number. This is done with the. There are cases when some small amount of experimenting is required, and you do not want to damage the main system, like when installing experimental library packages, or compiling with experimental compilers.

For such cases, the pbuilder login command is available. Note that the chroot is cleaned after logging out of the shell, and mounting file systems inside it is considered harmful. To facilitate using pbuilder for other uses, pbuilder execute is available. The script can be useful for sequences of operations such as installing ssh and adding a new user inside the chroot.

There are some advanced features, above that of the basic feature of pbuilder , for some specific purposes. LVM2 has a useful snapshot function that features Copy-on-write images. That could be used for pbuilder just as it can be used for the user-mode-linux pbuilder port.

The lvmpbuilder script in the examples directory implements such a port. It is also possible to use cowdancer with the pdebuild command. The --no-targz option of pbuilder will allow usage of pbuilder in a different way than conventional usage. It will try to use an existing chroot, and will not try to clean up after working on it.

It is an operation mode more like sbuild. It should be possible to create base chroot images for dchroot with the following commands:. It is possible to use pbuilder in a vserver environment. This requires either vserver-patches in version 2. It is possible to use the C compiler cache ccache to speed up repeated builds of the same package or packages that compile the same files multiple times for some reason. Using ccache can speed up repeated building of large packages dramatically, at the cost of some disk space and bookkeeping.

Current implementation of ccache support has several bugs, such that CCACHEDIR must be owned by the pbuilder build user, and parallel runs of pbuilder are not supported. Therefore it is not enabled by default.

This document was started on 28 Dec by Junichi Uekawa, trying to document what is known about pbuilder. This documentation is available from the pbuilder source tar-ball, and from the git repository of pbuilder web-based access is possible.

A copy of this documentation can be found on the Alioth project page for pbuilder. There is also a PDF version. The following is a most possibly inaccurate account of how pbuilder came to happen, and other attempts to make something like pbuilder happen. There was once dbuild, which was a shell script to build Debian packages from source.

Lars Wirzenius wrote that script, and it was good, short, and simple probably. There was nothing like build-depends then I think , and it was simple. It might have been improved; I could only find references and no actual source.

I don't know because I have never seen the actual code; I could only find some references to it on the net, and mailing list logs. It parses Build-Depends, and performs other miscellaneous checks, and has a lot of hacks to actually get things building, including a table of what package to use when virtual packages are specified does it do that still?

It supports the use of a local database for packages that do not have build-dependencies. It was written by Ronan Hodek, and I think it was patched and fixed and extended by several people.

It is part of wanna-build, and used extensively in the Debian buildd system. I think it was maintained mostly by Ryan Murray. Building packages from source using Build-Depends information within a chroot sounded trivial; and pbuilder was born. It was initially a shell script with only a few lines, which called debootstrap and chroot and dpkg-buildpackage in the same run, but soon, it was decided that that's too slow.

Yes, and it took almost a year to get things somewhat right, and in the middle of the process, Debian 3. Debian 3. Someone wanted pbuilder to not run as root, and as User-mode-linux has become more useful as time passed, I've started experimenting with pbuilder-user-mode-linux. There are other, similar tools that do similar tasks, but they do not share the exact same goal. To commemorate this fact, pbuilder is now co-maintained by several people. Development to use LVM-snapshots, cowloop, or cowdancer are hoped to improve the situation somewhat.

Junichi Uekawa. Table of Contents 1. Introducing pbuilder 1. Aims of pbuilder 2. Using pbuilder 1. Creating a base chroot image tar-ball 2. Updating the base. Building a package using the base. Facilitating Debian Developers' typing: pdebuild 5. Configuration Files 6. Building packages as non-root inside the chroot 7.

Using pbuilder for back-porting 8. Mass-building packages 9. Auto-backporting scripts Using pbuilder for automated testing of packages Using pbuilder for testing builds with alternate compilers 3. Using User-mode-linux with pbuilder 1. Configuring user-mode-linux 2. Configuring rootstrap 3. Configuring pbuilder-uml 4. Considerations for running pbuilder-user-mode-linux 5.

Parallel running of pbuilder-user-mode-linux 6. Using pbuilder-user-mode-linux as a wrapper script to start up a virtual machine 4. Frequently asked questions 1. Directories that cannot be bind-mounted 3. Logging in to pbuilder to investigate build failure 4. Logging in to pbuilder to modify the environment 5.

Creating a shortcut for running pbuilder with a specific distribution 8. Using environmental variables for running pbuilder for a specific distribution 9.