pacman/doc/PKGBUILD.5

." the string declarations are a start to try and make distro independent
.ds DS Arch Linux
.ds PB PKGBUILD
.ds VR 3.0.0
.TH PKGBUILD 5 "Feb 06, 2007" "PKGBUILD version \*(VR" "\*(DS Files"
.SH NAME
PKGBUILD \- \*(DS package build description file
.SH DESCRIPTION
This manual page is meant to describe general rules about PKGBUILDs. Once
a PKGBUILD is written, the actual package is built using \fBmakepkg\fR and 
installed with \fBpacman\fR.

\fBNOTE:\fR If you have a local copy of the Arch Build System (ABS) tree
on your computer, you can copy the PKGBUILD.proto file to your new package
build directory and edit it from there.  To acquire/sync the ABS tree, use
the \fBabs\fR script included with pacman/makepkg.

.SS Quick PKGBUILD Explanation
For an example of a PKGBUILD, see the \fBEXAMPLE\fR section.

\fIpkgname\fR defines the package name. It should not contain any uppercase
letters. \fIpkgversion\fR defines the actual package version as given by the
developers of the package. No dashes are allowed. \fIpkgrel\fR allows for
\*(DS-specific changes to the package or corrections to a PKGBUILD
without an upstream version change. The value should be an integer.
\fIpkgdesc\fR is a short one-line description for the package, usually taken
from the project's homepage or manpage. It is preferable to keep the length to
one line for displaying during searches. These four variables are required in
every PKGBUILD. \fIurl\fR is also highly recommended so users can find more
information on the package if needed.

\fIdepends\fR and \fImakedepends\fR are bash arrays which define the
dependencies of the package. Packages listed in \fImakedepends\fR are required
only for building the package, and not for runtime. \fIdepends\fR is used to
list runtime depends. To build the package using \fBmakepkg\fR, ALL dependencies
must be satisfied. For \fBpacman\fR to install the package, all runtime depends
must be satisfied.

The \fIbackup\fR array specifies files that should be treated specially
when removing or upgrading packages.  See \fBHANDLING CONFIG FILES\fR in
the \fIpacman\fR manpage for more information on this.

The \fIsource()\fR array tells makepkg which files to download or extract before
compiling begins. The \fImd5sums()\fR array provides md5sums for each of these
files. These are used to validate the integrity of the source files.

The \fIbuild\fR function is what actually does the work of putting the package
together. Sometimes this is as simple as a configure, make, make install (to
$startdir/pkg). However, some customizations are often needed during the build
process.

Once your PKGBUILD is created, you can run \fBmakepkg\fR from the build
directory. \fBmakepkg\fR will check dependencies and look for the source files
required to build.  If some are missing it will attempt to download them,
provided there is a fully-qualified URL in the \fIsource()\fR array.

.SH OPTIONS AND DIRECTIVES
.TP
.B pkgname
The name of the package. This has be a unix-friendly name as it will be
used in the package filename.

.TP
.B pkgver
This is the version of the software as released from the author (eg, 2.7.1).

.TP
.B pkgrel
This is the release number specific to \*(DS's release. This allows package
maintainers to make updates to the package's configure flags, for example.

.TP
.B pkgdesc
This should be a brief description of the package and its functionality.

." Not entirely applicable, and we can do this better anyway.  pacman does
." actuall support localized descriptions, though, but i don't think makepkg does.
." .TP
." .B pkgdesc_localized \fI(array)\fR
." Array of the localized package descriptions. The format is the following:
." pkgdesc_localized=('xx_YY foo' 'xx_YY bar')

.TP
.B url
This field contains an optional URL that is associated with the piece of 
software being packaged. This is typically the project's website.

.TP
.B license \fI(array)\fR
This field specifies the license(s) that apply to the package. Commonly-used
licenses are typically found in \fI/usr/share/licenses/common\fR. If you
see the package's license there, simply reference it in the license field
(eg, \fBlicense=("GPL")\fR). If the package provides a license not found in
\fI/usr/share/licenses/common\fR, then you should include the license in
the package itself and set \fBlicense=("custom")\fR or 
\fBlicense="custom:LicenseName"\fR. The license itself should be placed in a
directory called \fI$startdir/pkg/usr/share/licenses/$pkgname\fR. If multiple
licenses are applied, use the array form: \fBlicenses=('GPL' 'FDL')\fR

.TP
.B install
Specifies a special install script that is to be included in the package.
This file should reside in the same directory as the PKGBUILD, and will be
copied into the package by makepkg. It does not need to be included in the
\fIsource\fR array. (eg, install=pkgname.install)

.TP
.B source \fI(array)\fR
The \fIsource\fR line is an array of source files required to build the
package. Source files must reside in the same directory as the PKGBUILD
file, unless they have a fully-qualified URL. 

.TP
.B noextract \fI(array)\fR
The \fInoextract\fR line is an array of filenames corresponding to those from
the \fIsource\fR array.  If a file is listed in the \fInoextract\fR array, it is
not extracted with the rest of the source files.  This is useful for packages
which use compressed data which id downloaded via the \fIsource\fR array.

.TP
.B md5sums \fI(array)\fR
If this field is present, it should contain an MD5 hash for every source file
specified in the \fIsource\fR array (in the same order). \fImakepkg\fR will use
this to verify source file integrity during subsequent builds. To easily
generate md5sums, first build using the PKGBUILD then run
\fBmakepkg -g >>PKGBUILD\fR. Then you can edit the PKGBUILD and move the
\fImd5sums\fR line from the bottom to an appropriate location.
\fBNOTE:\fR makepkg supports multiple integrity algorithms and their
corresponding arrays (i.e. sha1sums for the SHA1 algorithm), however official
packages use only md5sums for the time being.

.TP
.B groups \fI(array)\fR
This is an array of symbolic names that represent groups of packages, allowing
you to install multiple packages by requesting a single target. For example,
one could install all KDE packages by installing the 'kde' group.

.TP
.B arch \fI(array)\fR
This array defines on which architectures the given package is available.

.TP
.B backup \fI(array)\fR 
A space-delimited array of filenames (without a preceding slash). The
\fIbackup\fR line will be propagated to the package meta-info file for
pacman. This will designate all files listed there to be backed up if this
package is ever removed from a system. See \fBHANDLING CONFIG FILES\fR in
the \fIpacman\fR manpage for more information.

.TP
.B depends \fI(array)\fR 
An array of packages that this package depends on to build and run. Packages
in this list should be surrounded with single quotes and contain at least the
package name. They can also include a version requirement of the form
\fBname<>version\fR, where <> is one of these three comparisons:
\fB>=\fR (greater than equal to), \fB<=\fR (less than or equal to), or 
\fB=\fR (equal to).

.TP
.B makedepends \fI(array)\fR
An array of packages that this package depends on to build, but not at runtime.
Packages in this list should follow the same format as \fIdepends\fR.

.TP
.B conflicts \fI(array)\fR 
An array of packages that will conflict with this package (ie, they cannot both
be installed at the same time). This directive follows the same format as
\fIdepends\fR except you cannot specify versions.

.TP
.B provides \fI(array)\fR 
An array of "virtual provisions" that this package provides. This allows a
package to provide dependencies other than its own package name. For example,
the kernel26beyond package can each provide 'kernel26' which allows packages
to simply depend on 'kernel26' rather than "kernel26 OR kernel26beyond".

.TP
.B replaces \fI(array)\fR 
This is an array of packages that this package should replace, and can be used
to handle renamed/combined packages. For example, if the j2re package gets
renamed to jre, then subsequent 'pacman -Syu' calls will not pick up the
upgrade, due to the differing package names. \fIreplaces\fR handles this.

.TP
.B options \fI(array)\fR
This array allows you to override some of makepkg's default behaviour
when building packages. To set an option, just include the option name
in the \fBoptions\fR array.
See \fBmakepkg (8)\fR for details on the options array.

.SS Install/Upgrade/Remove Scripting
Pacman has the ability to store and execute a package-specific script when it
installs, removes, or upgrades a package.  This allows a package to "configure
itself" after installation and do the opposite right before it is removed.

The exact time the script is run varies with each operation:

.TP
.B pre_install
script is run right before files are extracted.

.TP
.B post_install
script is run right after files are extracted.

.TP
.B pre_upgrade
script is run right before files are extracted.

.TP
.B post_upgrade
script is run after files are extracted.

.TP
.B pre_remove
script is run right before files are removed.

.TP
.B post_remove
script is run right after files are removed.

.P
To use this feature, just create a file (eg, pkgname.install) and put it in
the same directory as the PKGBUILD script.  Then use the \fIinstall\fR
directive:

install=pkgname.install

The install script does not need to be specified in the \fIsource\fR array.
A template install file is  available in your ABS tree (/var/abs/install.proto).

.SH EXAMPLE
The following is an example PKGBUILD for the 'modutils' package. For more
examples, look through the ABS tree.

.nf
# Maintainer: John Doe <johndoe@archlinux.org>
# Contributor: Bill Smith <billsmith@archlinux.org>
pkgname=modutils
pkgver=2.4.25
pkgrel=1
pkgdesc="Utilities for inserting modules in the linux kernel"
url="http://www.kernel.org"
makedepends=('bash' 'mawk')
depends=('glibc' 'zlib')
backup=(etc/modules.conf)
source=(ftp://ftp.kernel.org/pub/linux/utils/kernel/$pkgname/v2.4/$pkgname-$pkgver.tar.bz2 \\
        modules.conf)
arch=('i686')
license=('GPL' 'custom') #dual licensed
md5sums=('2c0cca3ef6330a187c6ef4fe41ecaa4d' \\
         '35175bee593a7cc7d6205584a94d8625')
options=('nolibtool')

build() {
  cd $startdir/src/$pkgname-$pkgver
  ./configure --prefix=/usr --enable-insmod-static
  make || return 1
  make prefix=$startdir/pkg/usr install
  mv $startdir/pkg/usr/sbin $startdir/pkg
  mkdir -p $startdir/pkg/etc
  cp ../modules.conf $startdir/pkg/etc
}
.fi

.SH SEE ALSO
.BR makepkg (8),
.BR makepkg.conf (5),
.BR pacman (8)
.BR pacman.conf (5)

See the Arch Linux website at <http://www.archlinux.org> for more current
information on the distribution, and 
<http://wiki.archlinux.org/index.php/Arch_Packaging_Standards> for
recommendations on packaging standards.
.SH AUTHORS
Judd Vinet <jvinet@zeroflux.org>
Aurelien Foret <aurelien@archlinux.org>
Aaron Griffin <aaron@archlinux.org>
Dan McGee <dan@archlinux.org>
See the 'AUTHORS' file for additional contributors.