Projects/Mock

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Mock

Mock creates chroots and builds packages in them. Its only task is to reliably populate a chroot and attempt to build a package in that chroot.

Status

Mock is currently being used for all Fedora builds. It is called by Plague (<=FC-6) and Koji (>=F-7) to build chroots and packages.

Download

https://fedorahosted.org/mock/ has all the latest builds. It can be installed with "yum install mock".

To check out the current code:

Setup

All users that are to use mock must be added to the mock group.

Configuration files are in /etc/mock. Mock versions 0.8.0 and higher cache the downloaded rpm packages (via the yum_cache plugin), which speeds up subsequent builds by a considerable margin. Nevertheless, you may wish to change the default configuration to point to local repositories to speed up builds.

By default, builds are done in /var/lib/mock, so be sure you have room. Starting with mock 0.8.0 and higher, you can change this via the 'basedir' config option.

Using

Usage:
usage:
mock [options]  {init|clean}
mock [options]  [rebuild]  /path/to/srpm(s)
mock [options]  {shell|chroot} <cmd>
mock [options]  installdeps {SRPM|RPM}
mock [options]  install PACKAGE
commands:
rebuild     - build the specified SRPM(s) [default command] 
chroot      - run the specified command within the chroot
shell       - run an interactive shell within specified chroot
clean       - clean out the specified chroot
init        - initialize the chroot, do not build anything
installdeps - install build dependencies for a specified SRPM
install     - install packages using yum

Options:
--version             show program's version number and exit
-h, --help            show this help message and exit
-r CHROOT             chroot name/config file name default: default
--no-clean            do not clean chroot before building
--cleanup-after       Clean chroot after building. Use with --resultdir.
Only active for 'rebuild'.
--no-cleanup-after    Dont clean chroot after building. If automatic cleanup
is enabled, use this to disable.
--arch=ARCH           target build arch
--resultdir=RESULTDIR
path for resulting files to be put
--uniqueext=UNIQUEEXT
Arbitrary, unique extension to append to buildroot
directory name
--configdir=CONFIGDIR
Change where config files are found
--rpmbuild_timeout=RPMBUILD_TIMEOUT
Fail build if rpmbuild takes longer than 'timeout'
seconds
--enable-plugin=ENABLED_PLUGINS
Enable plugin. Currently-available plugins: ('ccache',
'yum_cache', 'root_cache', 'bind_mount')
--disable-plugin=DISABLED_PLUGINS
Disable plugin. Currently-available plugins:
('ccache', 'yum_cache', 'root_cache', 'bind_mount')

For example, to rebuild a package for i386 on the development branch of Fedora:

  • mock rebuild -r fedora-devel-i386 /path/to/rpm

See /etc/mock for the available targets. If you have the bash-completion package installed, it will tab complete the targets for you.

Problems

If you encounter a bug running mock, please file it in Bugzilla , product "Fedora Hosted Projects", component mock.

See Also

Extras/MockTricks has some useful tips for using mock.
Docs/Drafts/MockSetupUsingLocalMirror Setting up a local mirror using Mock.
Legacy/Mock has some useful tips for building packages in mock for older Fedora and Red Hat Linux releases.