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# The XBPS source packages manual
This article contains an exhaustive manual of how to create new source
packages for XBPS, the `Void Linux` native packaging system.
*Table of Contents*
* [Introduction](#Introduction)
* [Quality Requirements](#quality_requirements)
* [Package build phases](#buildphase)
* [Package naming conventions](#namingconvention)
* [Libraries](#libs)
* [Language Modules](#language_modules)
* [Language Bindings](#language_bindings)
* [Programs](#programs)
* [Global functions](#global_funcs)
* [Global variables](#global_vars)
* [Available variables](#available_vars)
* [Mandatory variables](#mandatory_vars)
* [Optional variables](#optional_vars)
* [About the depends variables](#explain_depends)
* [Repositories](#repositories)
* [Repositories defined by Branch](#repo_by_branch)
* [Package defined repositories](#pkg_defined_repo)
* [Checking for new upstream releases](#updates)
* [Build style scripts](#build_scripts)
* [Functions](#functions)
* [Build options](#build_options)
* [Runtime dependencies](#deps_runtime)
* [INSTALL and REMOVE files](#install_remove_files)
* [INSTALL.msg and REMOVE.msg files](#install_remove_files_msg)
* [Creating system accounts/groups at runtime](#runtime_account_creation)
* [32bit packages](#32bit_pkgs)
* [Subpackages](#pkgs_sub)
* [Development packages](#pkgs_development)
* [Data packages](#pkgs_data)
* [Documentation packages](#pkgs_documentation)
* [Python packages](#pkgs_python)
* [Go packages](#pkgs_go)
* [Haskell packages](#pkgs_haskell)
* [Font packages](#pkgs_font)
* [Notes](#notes)
* [Contributing via git](#contributing)
* [Help](#help)
<a id="Introduction"></a>
## Introduction
The `void-packages` repository contains all `source` packages that are the
recipes to download, compile and build binary packages for `Void`.
Those `source` package files are called `templates`.
The `template files` are `GNU bash` shell scripts that must define some required/optional
`variables` and `functions` that are processed by `xbps-src` (the package builder)
to generate the resulting binary packages.
By convention, all templates start with a comment briefly explaining what they
are. In addition, pkgname and version can't have any characters in them that
would require them to be quoted, so they are not quoted.
A simple `template` example is as follows:
```
# Template file for 'foo'
pkgname=foo
version=1.0
revision=1
build_style=gnu-configure
short_desc="A short description max 72 chars"
maintainer="name <email>"
license="GPL-3"
homepage="http://www.foo.org"
distfiles="http://www.foo.org/foo-${version}.tar.gz"
checksum="fea0a94d4b605894f3e2d5572e3f96e4413bcad3a085aae7367c2cf07908b2ff"
```
The template file contains definitions to download, build and install the
package files to a `fake destdir`, and after this a binary package can be
generated with the definitions specified on it.
Don't worry if anything is not clear as it should be. The reserved `variables`
and `functions` will be explained later. This `template` file should be created
in a directory matching `$pkgname`, i.e: `void-packages/srcpkgs/foo/template`.
If everything went fine after running
$ ./xbps-src pkg <pkgname>
a binary package named `foo-1.0_1.<arch>.xbps` will be generated in the local repository
`hostdir/binpkgs`.
<a id="quality_requirements"></a>
### Quality Requirements
Follow this list to determine if a piece of software or other technology may be
permitted in the Void Linux repository. Exceptions to the list are possible,
and may be accepted, but are extremely unlikely. If you believe you have an
exception, start a PR and make an argument for why that particular piece of
software, while not meeting the below requirements, is a good candidate for
the Void packages system.
1. System: The software should be installed system-wide, not per-user.
1. Compiled: The software needs to be compiled before being used, even if it is
software that is not needed by the whole system.
1. Required: Another package either within the repository or pending inclusion
requires the package.
<a id="buildphase"></a>
### Package build phases
Building a package consist of the following phases:
- `setup` This phase prepares the environment for building a package.
- `fetch` This phase downloads required sources for a `source package`, as defined by
the `distfiles` variable or `do_fetch()` function.
- `extract` This phase extracts the `distfiles` files into `$wrksrc` or executes the `do_extract()`
function, which is the directory to be used to compile the `source package`.
- `configure` This phase executes the `configuration` of a `source package`, i.e `GNU configure scripts`.
- `build` This phase compiles/prepares the `source files` via `make` or any other compatible method.
- `check` This optional phase checks the result of the `build` phase for example by running `make -k check`.
- `install` This phase installs the `package files` into the package destdir `<masterdir>/destdir/<pkgname>-<version>`,
via `make install` or any other compatible method.
- `pkg` This phase builds the `binary packages` with files stored in the
`package destdir` and registers them into the local repository.
- `clean` This phase cleans up the package (if defined).
`xbps-src` supports running just the specified phase, and if it ran
successfully, the phase will be skipped later (unless its work directory
`${wrksrc}` is removed with `xbps-src clean`).
<a id="namingconventions"></a>
### Package naming conventions
<a id="libs"></a>
#### Libraries
Libraries are packages which provide shared objects (\*.so) in /usr/lib.
They should be named like their upstream package name with the following
exceptions:
- The package is a subpackage of a front end application and provides
shared objects used by the base package and other third party libraries. In that
case it should be prefixed with 'lib'. An exception from that rule is: If an
executable is only used for building that package, it moves to the -devel
package.
Example: wireshark -> subpkg libwireshark
Libraries have to be split into two sub packages: `<name>` and `<name>-devel`.
- `<name>` should only contain those parts of a package which are needed to run
a linked program.
- `<name>-devel` should contain all files which are needed to compile a package
against this package. If the library is a sub package, its corresponding
development package should be named `lib<name>-devel`
<a id="language_modules"></a>
#### Language Modules
Language modules are extensions to script or compiled languages. Those packages
do not provide any executables themselves, but can be used by other packages
written in the same language.
The naming convention to those packages is:
```
<language>-<name>
```
If a package provides both, a module and a executable, it should be split into
a package providing the executable named `<name>` and the module named
`<language>-<name>`. If a package starts with the languages name itself, the
language prefix can be dropped. Short names for languages are no valid substitute
for the language prefix.
Example: python-pam, perl-URI, python-pyside
<a id="language_bindings"></a>
#### Language Bindings
Language Bindings are packages which allow programs or libraries to have
extensions or plugins written in a certain language.
The naming convention to those packages is:
```
<name>-<language>
```
Example: gimp-python, irssi-perl
<a id="programs"></a>
#### Programs
Programs put executables under /usr/bin (or in very special cases in other
.../bin directories)
For those packages the upstream packages name should be used. Remember that
in contrast to many other distributions, void doesn't lowercase package names.
As a rule of thumb, if the tar.gz of a package contains uppercase letter, then
the package name should contain them too; if it doesn't, the package name
is lowercase.
Programs can be split into program packages and library packages. The program
package should be named as described above. The library package should be
prefixed with "lib" (see section `Libraries`)
<a id="global_funcs"></a>
### Global functions
The following functions are defined by `xbps-src` and can be used on any template:
- *vinstall()* `vinstall <file> <mode> <targetdir> [<name>]`
Installs `file` with the specified `mode` into `targetdir` in the pkg `$DESTDIR`.
The optional 4th argument can be used to change the `file name`.
- *vcopy()* `vcopy <pattern> <targetdir>`
Copies recursively all files in `pattern` to `targetdir` in the pkg `$DESTDIR`.
- *vmove()* `vmove <pattern>`
Moves `pattern` to the specified directory in the pkg `$DESTDIR`.
- *vmkdir()* `vmkdir <directory> [<mode>]`
Creates a directory in the pkg `$DESTDIR`. The 2nd optional argument sets the mode of the directory.
- *vbin()* `vbin <file> [<name>]`
Installs `file` into `usr/bin` in the pkg `$DESTDIR` with the
permissions 0755. The optional 2nd argument can be used to change
the `file name`.
- *vman()* `vman <file> [<name>]`
Installs `file` as a man page. `vman()` parses the name and
determines the section as well as localization. Also transparently
converts gzipped (.gz) manpages into plaintext. Example mappings:
`foo.1` -> `${DESTDIR}/usr/share/man/man1/foo.1`
`foo.fr.1` -> `${DESTDIR}/usr/share/man/fr/man1/foo.1`
`foo.1p` -> `${DESTDIR}/usr/share/man/man1/foo.1p`
`foo.1.gz` -> `${DESTDIR}/usr/share/man/man1/foo.1`
- *vdoc()* `vdoc <file> [<name>]`
Installs `file` into `usr/share/doc/<pkgname>` in the pkg
`$DESTDIR`. The optional 2nd argument can be used to change the
`file name`.
- *vconf()* `vconf <file> [<name>]`
Installs `file` into `etc` in the pkg
`$DESTDIR`. The optional 2nd argument can be used to change the
`file name`.
- *vsconf()* `vsconf <file> [<name>]`
Installs `file` into `usr/share/examples/<pkgname>` in the pkg
`$DESTDIR`. The optional 2nd argument can be used to change the
`file name`.
- *vlicense()* `vlicense <file> [<name>]`
Installs `file` into `usr/share/licenses/<pkgname>` in the pkg
`$DESTDIR`. The optional 2nd argument can be used to change the
`file name`. Note: Non-`GPL` licenses, `MIT`, `BSD` and `ISC` require the
license file to be supplied with the binary package.
- *vsv()* `vsv <service>`
Installs `service` from `${FILESDIR}` to /etc/sv. The service must
be a directory containing at least a run script. Note the `supervise`
symlink will be created automatically by `vsv`.
For further information on how to create a new service directory see
[The corresponding section the FAQ](http://smarden.org/runit/faq.html#create).
> Shell wildcards must be properly quoted, i.e `vmove "usr/lib/*.a"`.
<a id="global_vars"></a>
### Global variables
The following variables are defined by `xbps-src` and can be used on any template:
- `makejobs` Set to `-jX` if `XBPS_MAKEJOBS` is defined, to allow parallel jobs with `GNU make`.
- `sourcepkg` Set to the to main package name, can be used to match the main package
rather than additional binary package names.
- `CHROOT_READY` Set if the target chroot (masterdir) is ready for chroot builds.
- `CROSS_BUILD` Set if `xbps-src` is cross compiling a package.
- `DESTDIR` Full path to the fake destdir used by the source pkg, set to
`<masterdir>/destdir/${sourcepkg}-${version}`.
- `FILESDIR` Full path to the `files` package directory, i.e `srcpkgs/foo/files`.
The `files` directory can be used to store additional files to be installed
as part of the source package.
- `PKGDESTDIR` Full path to the fake destdir used by the `pkg_install()` function in
`subpackages`, set to `<masterdir>/destdir/${pkgname}-${version}`.
- `XBPS_BUILDDIR` Directory to store the `source code` of the source package being processed,
set to `<masterdir>/builddir`. The package `wrksrc` is always stored
in this directory such as `${XBPS_BUILDDIR}/${wrksrc}`.
- `XBPS_MACHINE` The machine architecture as returned by `uname -m`.
- `XBPS_SRCDISTDIR` Full path to where the `source distfiles` are stored, i.e `$XBPS_HOSTDIR/sources`.
- `XBPS_SRCPKGDIR` Full path to the `srcpkgs` directory.
- `XBPS_TARGET_MACHINE` The target machine architecture when cross compiling a package.
- `XBPS_FETCH_CMD` The utility to fetch files from `ftp`, `http` of `https` servers.
<a id="available_vars"></a>
### Available variables
<a id="mandatory_vars"></a>
#### Mandatory variables
The list of mandatory variables for a template:
- `homepage` A string pointing to the `upstream` homepage.
- `license` A string matching any license file available in `/usr/share/licenses`.
Multiple licenses should be separated by commas, i.e `GPL-3, LGPL-2.1`.
- `maintainer` A string in the form of `name <user@domain>`. The
email for this field must be a valid email that you can be reached
at. Packages using `users.noreply.github.com` emails will not be
accepted.
- `pkgname` A string with the package name, matching `srcpkgs/<pkgname>`.
- `revision` A number that must be set to 1 when the `source package` is created, or
updated to a new `upstream version`. This should only be increased when
the generated `binary packages` have been modified.
- `short_desc` A string with a brief description for this package. Max 72 chars.
- `version` A string with the package version. Must not contain dashes or underscore
and at least one digit is required. Shell's variable substition usage is not allowed.
<a id="optional_vars"></a>
#### Optional variables
- `hostmakedepends` The list of `host` dependencies required to build the package, and
that will be installed to the master directory. There is no need to specify a version
because the current version in srcpkgs will always be required.
Example `hostmakedepends="foo blah"`.
- `makedepends` The list of `target` dependencies required to build the package, and that
will be installed to the master directory. There is no need to specify a version
because the current version in srcpkgs will always be required.
Example `makedepends="foo blah"`.
- `checkdepends` The list of dependencies required to run the package checks, i.e.
the script or make rule specified in the template's `do_check()` function.
Example `checkdepends="gtest"`.
- `depends` The list of dependencies required to run the package. These dependencies
are not installed to the master directory, rather are only checked if a binary package
in the local repository exists to satisfy the required version. Dependencies
can be specified with the following version comparators: `<`, `>`, `<=`, `>=`
or `foo-1.0_1` to match an exact version. If version comparator is not
defined (just a package name), the version comparator is automatically set to `>=0`.
Example `depends="foo blah>=1.0"`. See the `Runtime dependencies` section for more information.
- `bootstrap` If enabled the source package is considered to be part of the `bootstrap`
process and required to be able to build packages in the chroot. Only a
small number of packages must set this property.
- `conflicts` An optional list of packages conflicting with this package.
Conflicts can be specified with the following version comparators: `<`, `>`, `<=`, `>=`
or `foo-1.0_1` to match an exact version. If version comparator is not
defined (just a package name), the version comparator is automatically set to `>=0`.
Example `conflicts="foo blah>=0.42.3"`.
- `distfiles` The full URL to the `upstream` source distribution files. Multiple files
can be separated by whitespaces. The files must end in `.tar.lzma`, `.tar.xz`,
`.txz`, `.tar.bz2`, `.tbz`, `.tar.gz`, `.tgz`, `.gz`, `.bz2`, `.tar` or
`.zip`. To define a target filename, append `>filename` to the URL.
Example:
distfiles="http://foo.org/foo-1.0.tar.gz http://foo.org/bar-1.0.tar.gz>bar.tar.gz"
To avoid repetition, several variables for common hosting sites
exist:
| Variable | Value |
|------------------|-------------------------------------------------|
| CPAN_SITE | http://cpan.perl.org/modules/by-module |
| DEBIAN_SITE | http://ftp.debian.org/debian/pool |
| FREEDESKTOP_SITE | http://freedesktop.org/software |
| GNOME_SITE | http://ftp.gnome.org/pub/GNOME/sources |
| GNU_SITE | http://mirrors.kernel.org/gnu |
| KERNEL_SITE | http://www.kernel.org/pub/linux |
| MOZILLA_SITE | http://ftp.mozilla.org/pub |
| NONGNU_SITE | http://download.savannah.nongnu.org/releases |
| PYPI_SITE | https://files.pythonhosted.org/packages/source |
| SOURCEFORGE_SITE | http://downloads.sourceforge.net/sourceforge |
| UBUNTU_SITE | http://archive.ubuntu.com/ubuntu/pool |
| XORG_HOME | http://xorg.freedesktop.org/wiki/ |
| XORG_SITE | http://xorg.freedesktop.org/releases/individual |
| KDE_SITE | https://download.kde.org/stable |
- `checksum` The `sha256` digests matching `${distfiles}`. Multiple files can be
separated by blanks. Please note that the order must be the same than
was used in `${distfiles}`. Example `checksum="kkas00xjkjas"`
If a distfile changes its checksum for every download because it is packaged
on the fly on the server, like e.g. snapshot tarballs from any of the
`https://*.googlesource.com/` sites, the checksum of the `archive contents`
can be specified by prepending a commercial at (@).
For tarballs you can find the contents checksum by using the command
`tar xf <tarball.ext> --to-stdout | sha256sum`.
- `wrksrc` The directory name where the package sources are extracted, by default
set to `${pkgname}-${version}`.
- `build_wrksrc` A directory relative to `${wrksrc}` that will be used when building the package.
- `create_wrksrc` Enable it to create the `${wrksrc}` directory. Required if a package
contains multiple `distfiles`.
- `only_for_archs` This expects a separated list of architectures where
the package can be built matching `uname -m` output. Reserved for uses
where the program really only will ever work on certain architectures, like
binaries sources or when the program is written in assembly. Example
`only_for_archs="x86_64 armv6l"`.
- `build_style` This specifies the `build method` for a package. Read below to know more
about the available package `build methods`. If `build_style` is not set,
the package must define at least a `do_install()` function, and optionally
more build phases as such `do_configure()`, `do_build()`, etc.
- `configure_script` The name of the `configure` script to execute at the `configure` phase if
`${build_style}` is set to `configure` or `gnu-configure` build methods.
By default set to `./configure`.
- `configure_args` The arguments to be passed in to the `configure` script if `${build_style}`
is set to `configure` or `gnu-configure` build methods. By default, prefix
must be set to `/usr`. In `gnu-configure` packages, some options are already
set by default: `--prefix=/usr --sysconfdir=/etc --infodir=/usr/share/info --mandir=/usr/share/man --localstatedir=/var`.
- `make_cmd` The executable to run at the `build` phase if `${build_style}` is set to
`configure`, `gnu-configure` or `gnu-makefile` build methods.
By default set to `make`.
- `make_build_args` The arguments to be passed in to `${make_cmd}` at the build phase if
`${build_style}` is set to `configure`, `gnu-configure` or `gnu-makefile`
build methods. Unset by default.
- `make_check_args` The arguments to be passed in to `${make_cmd}` at the check phase if
`${build_style}` is set to `configure`, `gnu-configure` or `gnu-makefile`
build methods. Unset by default.
- `make_install_args` The arguments to be passed in to `${make_cmd}` at the `install-destdir`
phase if `${build_style}` is set to `configure`, `gnu-configure` or
`gnu-makefile` build methods. By default set to
`PREFIX=/usr DESTDIR=${DESTDIR}`.
- `make_build_target` The target to be passed in to `${make_cmd}` at the build phase if
`${build_style}` is set to `configure`, `gnu-configure` or `gnu-makefile`
build methods. Unset by default (`all` target).
- `make_check_target` The target to be passed in to `${make_cmd}` at the check phase if
`${build_style}` is set to `configure`, `gnu-configure` or `gnu-makefile`
build methods. By default set to `check`.
- `make_install_target` The target to be passed in to `${make_cmd}` at the `install-destdir` phase
if `${build_style}` is set to `configure`, `gnu-configure` or `gnu-makefile`
build methods. By default set to `install`.
- `patch_args` The arguments to be passed in to the `patch(1)` command when applying
patches to the package sources after `do_extract()`. Patches are stored in
`srcpkgs/<pkgname>/patches` and must be in `-p0` format. By default set to `-Np0`.
- `disable_parallel_build` If set the package won't be built in parallel
and `XBPS_MAKEJOBS` has no effect.
- `keep_libtool_archives` If enabled the `GNU Libtool` archives won't be removed. By default those
files are always removed automatically.
- `skip_extraction` A list of filenames that should not be extracted in the `extract` phase.
This must match the basename of any url defined in `${distfiles}`.
Example `skip_extraction="foo-${version}.tar.gz"`.
- `nodebug` If enabled -dbg packages won't be generated even if `XBPS_DEBUG_PKGS` is set.
- `conf_files` A list of configuration files the binary package owns; this expects full
paths, wildcards will be extended, and multiple entries can be separated by blanks i.e:
`conf_files="/etc/foo.conf /etc/foo2.conf /etc/foo/*.conf"`.
- `mutable_files` A list of files the binary package owns, with the expectation
that those files will be changed. These act a lot like `conf_files` but
without the assumption that a human will edit them.
- `make_dirs` A list of entries defining directories and permissions to be
created at install time. Each entry should be space separated, and will
itself contain spaces. `make_dirs="/dir 0750 user group"`. User and group and
mode are required on every line, even if they are `755 root root`. By
convention, there is only one entry of `dir perms user group` per line.
- `noarch` If set, the binary package is not architecture specific and can be shared
by all supported architectures.
- `repository` Defines the repository in which the package will be placed. See
*Repositories* for a list of valid repositories.
- `nostrip` If set, the ELF binaries with debugging symbols won't be stripped. By
default all binaries are stripped.
- `noshlibprovides` If set, the ELF binaries won't be inspected to collect the provided
sonames in shared libraries.
- `noverifyrdeps` If set, the ELF binaries and shared libaries won't be inspected to collect
their reverse dependencies. You need to specify all dependencies in the `depends` when you
need to set this.
- `skiprdeps` If set, contains the list of filenames specified by their absolute path in
the `$DESTDIR` which will not be scanned for runtime dependencies. This may be useful to
skip files which are not meant to be run or loaded on the host but are to be sent to some
target device or emulation.
- `nocross` If set, cross compilation won't be allowed and will exit immediately.
This should be set to a string describing why it fails, or a link to a travis
buildlog demonstrating the failure.
- `restricted` If set, xbps-src will refuse to build the package unless
`etc/conf` has `XBPS_ALLOW_RESTRICTED=yes`. The primary builders for Void
Linux do not have this setting, so the primary repositories will not have any
restricted package. This is useful for packages where the license forbids
redistribution.
- `subpackages` A white space separated list of subpackages (matching `foo_package()`)
to override the guessed list. Only use this if a specific order of subpackages is required,
otherwise the default would work in most cases.
- `broken` If set, building the package won't be allowed because its state is currently broken.
This should be set to a string describing why it is broken, or a link to a travis
buildlog demonstrating the failure.
- `shlib_provides` A white space separated list of additional sonames the package provides on.
This appends to the generated file rather than replacing it.
- `shlib_requires` A white space separated list of additional sonames the package requires.
This appends to the generated file rather than replacing it.
- `nopie` Only needs to be set to something to make active, disables building the package with hardening
features (PIE, relro, etc). Not necessary for most packages.
- `reverts` xbps supports a unique feature which allows to downgrade from broken
packages automatically. In the `reverts` field one can define a list of broken
pkgver the resulting package should revert. This field *must* be defined before
`version` and `revision` fields in order to work as expected. The versions
defined in `reverts` must be bigger than the one defined in `version`.
Example:
```
reverts="2.0_1 2.0_2"
version=1.9
revision=2
```
- `alternatives` A white space separated list of supported alternatives the package provides.
A list is composed of three components separated by a colon: group, symlink and target.
i.e `alternatives="vi:/usr/bin/vi:/usr/bin/nvi ex:/usr/bin/ex:/usr/bin/nvi-ex"`.
- `font_dirs` A white space separated list of directories specified by an absolute path where a
font package installs its fonts.
It is used in the `x11-fonts` xbps-trigger to rebuild the font cache during install/removal
of the package.
i.e `font_dirs="/usr/share/fonts/TTF /usr/share/fonts/X11/misc"`
- `dkms_modules` A white space separated list of Dynamic Kernel Module Support (dkms) modules
that will be installed and removed by the `dkms` xbps-trigger with the install/removal of the
package.
The format is a white space separated pair of strings that represent the name of the module,
most of the time `pkgname`, and the version of the module, most of the time `version`.
i.e `dkms_modules="$pkgname $version zfs 4.14"`
- `register_shell` A white space separated list of shells defined by absolute path to be
registered into the system shells database. It is used by the `register-shell` trigger.
i.e `register_shell="/bin/tcsh /bin/csh"`
- `tags` A white space separated list of tags (categories) that are registered into the
package metadata and can be queried with `xbps-query` by users.
i.e for qutebrowser `tags="browser chromium-based qt5 python3"`
<a id="explain_depends"></a>
#### About the many types of `depends` variable.
So far we have listed four types of `depends`, there are `hostmakedepends`,
`makedepends`, `checkdepends` and plain old `depends`.To understand the difference
between them, understand this: Void Linux cross compiles for many arches.
Sometimes in a build process, certain programs must be run, for example `yacc`, or the
compiler itself for a C program. Those programs get put in `hostmakedepends`.
When the build runs, those will be installed on the host to help the build
complete.
Then there are those things for which a package either links against or
includes header files. These are `makedepends`, and regardless of the
architecture of the build machine, the architecture of the target machine must
be used. Typically the `makedepends` will be the only one of the three types of
`depends` to include `-devel` packages, and typically only `-devel` packages.
Then there are those things that are required for a package to run its testsuite
`dejagnu` or libraries it must link to when building test binaries like `cmocka`.
These are `checkdepends` and they are installed like they are part of `makedepends`.
the difference is that they are only installed when `XBPS_CHECK_PKGS` is defined.
The final variable, `depends`, is for those things the package needs at
runtime and without which is unusable, and that xbps can't auto-detect.
These are not all the packages the package needs at runtime, but only those
that are not linked against. This variable is most useful for non-compiled
programs.
Finally, as a general rule, if something compiles the exact same way whether or
not you add a particular package to `makedepends` or `hostmakedepends`, it
shouldn't be added.
<a id="repositories"></a>
#### Repositories
<a id="repo_by_branch"></a>
##### Repositories defined by Branch
The global repository takes the name of
the current branch, except if the name of the branch is master. Then the resulting
repository will be at the global scope. The usage scenario is that the user can
update multiple packages in a second branch without polluting his local repository.
<a id="pkg_defined_repo"></a>
##### Package defined Repositories
The second way to define a repository is by setting the `repository` variable in
a template. This way the maintainer can define repositories for a specific
package or a group of packages. This is currently used to distinguish between
closed source packages, which are put in the `nonfree` repository and other
packages which are at the root-repository.
The following repository names are valid:
* `nonfree`: Repository for closed source packages.
<a id="updates"></a>
### Checking for new upstream releases
New upstream versions can be automatically checked using
`./xbps-src update-check <pkgname>`. In some cases you need to override
the sensible defaults by assigning the following variables in a `update`
file in the same directory as the relevant `template` file:
- `site` contains the URL where the version number is
mentioned. If unset, defaults to `homepage` and the directories where
`distfiles` reside.
- `pkgname` is the package name the default pattern checks for.
If unset, defaults to `pkgname` from the template.
- `pattern` is a perl-compatible regular expression
matching the version number. Anchor the version number using `\K`
and `(?=...)`. Example: `pattern='<b>\K[\d.]+(?=</b>)'`, this
matches a version number enclosed in `<b>...</b>` tags.
- `ignore` is a space-separated list of shell globs that match
version numbers which are not taken into account for checking newer
versions. Example: `ignore="*b*"`
- `version` is the version number used to compare against
upstream versions. Example: `version=${version//./_}`
<a id="build_scripts"></a>
### build style scripts
The `build_style` variable specifies the build method to build and install a
package. It expects the name of any available script in the
`void-packages/common/build-style` directory. Please note that required packages
to execute a `build_style` script must be defined via `$hostmakedepends`.
The current list of available `build_style` scripts is the following:
- `cmake` For packages that use the CMake build system, configuration arguments
can be passed in via `configure_args`. The `cmake_builddir` variable may be
defined to specify the directory for building under `build_wrksrc` instead of
the default `build`.
- `configure` For packages that use non-GNU configure scripts, at least `--prefix=/usr`
should be passed in via `configure_args`.
- `fetch` For packages that only fetch files and are installed as is via `do_install()`.
- `gnu-configure` For packages that use GNU configure scripts, additional configuration
arguments can be passed in via `configure_args`.
- `gnu-makefile` For packages that use GNU make, build arguments can be passed in via
`make_build_args` and install arguments via `make_install_args`. The build
target can be overridden via `make_build_target` and the install target
via `make_install_target`. This build style tries to compensate for makefiles
that do not respect environment variables, so well written makefiles, those
that do such things as append (`+=`) to variables, should have `make_use_env`
set in the body of the template.
- `go` For programs written in Go that follow the standard package
structure. The variable `go_import_path` must be set to the package's
import path, e.g. `github.com/github/hub` for the `hub` program. If
the variable `go_get` is set to `yes`, the package will be
downloaded with `go get`. Otherwise (the default) it's expected that
the distfile contains the package. In both cases, dependencies will
be downloaded with `go get`.
- `meta` For `meta-packages`, i.e packages that only install local files or simply
depend on additional packages. This build style does not install
dependencies to the root directory, and only checks if a binary package is
available in repositories.
- `R-cran` For packages that are available on The Comprehensive R Archive
Network (CRAN). The build style requires the `pkgname` to start with
`R-cran-` and any dashes (`-`) in the CRAN-given version to be replaced
with the character `r` in the `version` variable. The `distfiles`
location will automatically be set as well as the package made to depend
on `R`.
- `ruby-module` For packages that are ruby modules and are installable via `ruby install.rb`.
Additional install arguments can be specified via `make_install_args`.
- `perl-ModuleBuild` For packages that use the Perl
[Module::Build](https://metacpan.org/pod/Module::Build) method.
- `perl-module` For packages that use the Perl
[ExtUtils::MakeMaker](http://perldoc.perl.org/ExtUtils/MakeMaker.html) build method.
- `waf3` For packages that use the Python3 `waf` build method with python3.
- `waf` For packages that use the Python `waf` method with python2.
- `slashpackage` For packages that use the /package hierarchy and package/compile to build,
such as `daemontools` or any `djb` software.
- `qmake` For packages that use Qt4/Qt5 qmake profiles (`*.pro`), qmake arguments
for the configure phase can be passed in via `configure_args`, make build arguments can
be passed in via `make_build_args` and install arguments via `make_install_args`. The build
target can be overridden via `make_build_target` and the install target
via `make_install_target`.
- `meson` For packages that use the Meson Build system, configuration options can be passed
via `configure_args`, the meson command can be overridden by `meson_cmd` and the location of
the out of source build by `meson_builddir`
For packages that use the Python module build method (`setup.py`), you
can choose one of the following:
- `python-module` to build *both* Python 2.x and 3.x modules
- `python2-module` to build Python 2.x only modules
- `python3-module` to build Python 3.x only modules
> If `build_style` is not set, the template must (at least) define a
`do_install()` function and optionally more phases via `do_xxx()` functions.
Environment variables for a specific `build_style` can be declared in a filename
matching the `build_style` name, i.e:
`common/environment/build-style/gnu-configure.sh`
<a id="functions"></a>
### Functions
The following functions can be defined to change the behavior of how the
package is downloaded, compiled and installed.
- `do_fetch()` if defined and `distfiles` is not set, use it to fetch the required sources.
- `do_extract()` if defined and `distfiles` is not set, use it to extract the required sources.
- `post_extract()` Actions to execute after `do_extract()`.
- `pre_configure()` Actions to execute after `post_extract()`.
- `do_configure()` Actions to execute to configure the package; `${configure_args}` should
still be passed in if it's a GNU configure script.
- `post_configure()` Actions to execute after `do_configure()`.
- `pre_build()` Actions to execute after `post_configure()`.
- `do_build()` Actions to execute to build the package.
- `post_build()` Actions to execute after `do_build()`.
- `pre_install()` Actions to execute after `post_build()`.
- `do_install()` Actions to execute to install the package files into the `fake destdir`.
- `post_install()` Actions to execute after `do_install()`.
- `do_clean()` Actions to execute to clean up after a successful package phase.
> A function defined in a template has preference over the same function
defined by a `build_style` script.
<a id="build_options"></a>
### Build options
Some packages might be built with different build options to enable/disable
additional features; The XBPS source packages collection allows you to do this with some simple tweaks
to the `template` file.
The following variables may be set to allow package build options:
- `build_options` Sets the build options supported by the source package.
- `build_options_default` Sets the default build options to be used by the source package.
- `desc_option_<option>` Sets the description for the build option `option`. This must match the
keyword set in *build_options*. Note that if the build option is generic enough, its description
should be added to `common/options.description` instead.
After defining those required variables, you can check for the
`build_option_<option>` variable to know if it has been set and adapt the source
package accordingly. Additionally, the following functions are available:
- *vopt_if()* `vopt_if <option> <if_true> [<if_false>]`
Outputs `if_true` if `option` is set, or `if_false` if it isn't set.
- *vopt_with()* `vopt_with <option> [<flag>]`
Outputs `--with-<flag>` if the option is set, or `--without-<flag>`
otherwise. If `flag` isn't set, it defaults to `option`.
Examples:
- `vopt_with dbus`
- `vopt_with xml xml2`
- *vopt_enable()* `vopt_enable <option> [<flag>]`
Same as `vopt_with`, but uses `--enable-<flag>` and
`--disable-<flag>` respectively.
- *vopt_conflict()* `vopt_conflict <option 1> <option 2>`
Emits an error and exits if both options are set at the same time.
- *vopt_bool()* `vopt_bool <option> <property>`
Outputs `-D<property>=true` if the option is set, or
`-D<property>=false` otherwise.
The following example shows how to change a source package that uses GNU
configure to enable a new build option to support PNG images:
```
# Template file for 'foo'
pkgname=foo
version=1.0
revision=1
build_style=gnu-configure
configure_args="... $(vopt_with png)"
makedepends="... $(vopt_if png libpng-devel)"
...
# Package build options
build_options="png"
desc_option_png="Enable support for PNG images"
# To build the package by default with the `png` option:
#
# build_options_default="png"
...
```
The supported build options for a source package can be shown with `xbps-src`:
$ ./xbps-src show-options foo
Build options can be enabled with the `-o` flag of `xbps-src`:
$ ./xbps-src -o option,option1 <cmd> foo
Build options can be disabled by prefixing them with `~`:
$ ./xbps-src -o ~option,~option1 <cmd> foo
Both ways can be used together to enable and/or disable multiple options
at the same time with `xbps-src`:
$ ./xbps-src -o option,~option1,~option2 <cmd> foo
The build options can also be shown for binary packages via `xbps-query(8)`:
$ xbps-query -R --property=build-options foo
Permanent global package build options can be set via `XBPS_PKG_OPTIONS` variable in the
`etc/conf` configuration file. Per package build options can be set via
`XBPS_PKG_OPTIONS_<pkgname>`.
> NOTE: if `pkgname` contains `dashes`, those should be replaced by `underscores`
i.e `XBPS_PKG_OPTIONS_xorg_server=opt`.
The list of supported package build options and its description is defined in the
`common/options.description` file.
<a id="deps_runtime"></a>
#### Runtime dependencies
Dependencies for ELF objects are detected automatically by `xbps-src`, hence runtime
dependencies must not be specified in templates via `$depends` with the following exceptions:
- ELF objects using dlopen(3).
- non ELF objects, i.e perl/python/ruby/etc modules.
- Overriding the minimal version specified in the `shlibs` file.
The runtime dependencies for ELF objects are detected by checking which SONAMEs
they require and then the SONAMEs are mapped to a binary package name with a minimal
required version. The `shlibs` file in the `void-packages/common` directory
sets up the `<SONAME> <pkgname>>=<version>` mappings.
For example the `foo-1.0_1` package provides the `libfoo.so.1` SONAME and
software requiring this library will link to `libfoo`; the resulting binary
package will have a run-time dependency to `foo>=1.0_1` package as specified in
`common/shlibs`:
```
# common/shlibs
...
libfoo.so.1 foo-1.0_1
...
```
- The first field specifies the SONAME.
- The second field specified the package name and minimal version required.
- A third optional field (usually set to `ignore`) can be used to skip checks in soname bumps.
Dependencies declared via `${depends}` are not installed to the master directory, rather are
only checked if they exist as binary packages, and are built automatically by `xbps-src` if
the specified version is not in the local repository.
There's a special variant of how `virtual` dependencies can be specified as `runtime dependencies`
and is by using the `virtual?` keyword, i.e `depends="virtual?vpkg-0.1_1"`. This declares
a `runtime` virtual dependency to `vpkg-0.1_1`; this `virtual` dependency will be simply ignored
when the package is being built with `xbps-src`.
<a id="install_remove_files"></a>
### INSTALL and REMOVE files
The INSTALL and REMOVE shell snippets can be used to execute certain actions at a specified
stage when a binary package is installed, updated or removed. There are some variables
that are always set by `xbps` when the scripts are executed:
- `$ACTION`: to conditionalize its actions: `pre` or `post`.
- `$PKGNAME`: the package name.
- `$VERSION`: the package version.
- `$UPDATE`: set to `yes` if package is being upgraded, `no` if package is being `installed` or `removed`.
- `$CONF_FILE`: full path to `xbps.conf`.
- `$ARCH`: the target architecture it is running on.
An example of how an `INSTALL` or `REMOVE` script shall be created is shown below:
```
# INSTALL
case "$ACTION" in
pre)
# Actions to execute before the package files are unpacked.
...
;;
post)
if [ "$UPDATE" = "yes" ]; then
# actions to execute if package is being updated.
...
else
# actions to execute if package is being installed.
...
fi
;;
esac
```
subpackages can also have their own `INSTALL` and `REMOVE` files, simply create them
as `srcpkgs/<pkgname>/<subpkg>.INSTALL` or `srcpkgs/<pkgname>/<subpkg>.REMOVE` respectively.
> NOTE: always use paths relative to the current working directory, otherwise if the scripts cannot
be executed via `chroot(2)` won't work correctly.
> NOTE: do not use INSTALL/REMOVE scripts to print messages, see the next section for
more information.
<a id="install_remove_files_msg"></a>
### INSTALL.msg and REMOVE.msg files
The `INSTALL.msg` and `REMOVE.msg` files can be used to print a message at post-install
or pre-remove time, respectively.
Ideally those files should not exceed 80 chars per line.
subpackages can also have their own `INSTALL.msg` and `REMOVE.msg` files, simply create them
as `srcpkgs/<pkgname>/<subpkg>.INSTALL.msg` or `srcpkgs/<pkgname>/<subpkg>.REMOVE.msg` respectively.
<a id="runtime_account_creation"></a>
### Creating system accounts/groups at runtime
There's a trigger along with some variables that are specifically to create
**system users and groups** when the binary package is being configured.
The following variables can be used for this purpose:
- `system_groups` This specifies the names of the new *system groups* to be created, separated
by blanks. Optionally the **gid** can be specified by delimiting it with a
colon, i.e `system_groups="mygroup:78"` or `system_groups="foo blah:8000"`.
- `system_accounts` This specifies the names of the new **system users/groups** to be created,
separated by blanks, i.e `system_accounts="foo blah:22"`. Optionally the **uid** and **gid**
can be specified by delimiting it with a colon, i.e `system_accounts="foo:48"`.
Additional variables for the **system accounts** can be specified to change its behavior:
- `<account>_homedir` the home directory for the user. If unset defaults to `/var/empty`.
- `<account>_shell` the shell for the new user. If unset defaults to `/sbin/nologin`.
- `<account>_descr` the description for the new user. If unset defaults to `<account> unprivileged user`.
- `<account>_groups` additional groups to be added to for the new user.
- `<account>_pgroup` to set the primary group, by default primary group is set to `<account>`.
The **system user** is created by using a dynamically allocated **uid/gid** in your system
and it's created as a `system account`, unless the **uid** is set. A new group will be created for the
specified `system account` and used exclusively for this purpose.
<a id="32bit_pkgs"></a>
### 32bit packages
32bit packages are built automatically when the builder is x86 (32bit), but
there are some variables that can change the behavior:
- `lib32depends` If this variable is set, dependencies listed here will be used rather than
those detected automatically by `xbps-src` and **depends**. Please note that
dependencies must be specified with version comparators, i.e
`lib32depends="foo>=0 blah<2.0"`.
- `lib32disabled` If this variable is set, no 32bit package will be built.
- `lib32files` Additional files to be added to the **32bit** package. This expect absolute
paths separated by blanks, i.e `lib32files="/usr/bin/blah /usr/include/blah."`.
- `lib32symlinks` Makes a symlink of the target filename stored in the `lib32` directory.
This expects the basename of the target file, i.e `lib32symlinks="foo"`.
- `lib32mode` If unset, only shared/static libraries and pkg-config files will be copied to the
**32bit** package. If set to `full` all files will be copied to the 32bit package, unmodified.
<a id="pkgs_sub"></a>
### Subpackages
In the example shown above just a binary package is generated, but with some
simple tweaks multiple binary packages can be generated from a single
template/build, this is called `subpackages`.
To create additional `subpackages` the `template` must define a new function
with this naming: `<subpkgname>_package()`, i.e:
```
# Template file for 'foo'
pkgname=foo
version=1.0
revision=1
build_style=gnu-configure
short_desc="A short description max 72 chars"
maintainer="name <email>"
license="GPL-3"
homepage="http://www.foo.org"
distfiles="http://www.foo.org/foo-${version}.tar.gz"
checksum="fea0a94d4b605894f3e2d5572e3f96e4413bcad3a085aae7367c2cf07908b2ff"
# foo-devel is a subpkg
foo-devel_package() {
short_desc+=" - development files"
depends="${sourcepkg}>=${version}_${revision}"
pkg_install() {
vmove usr/include
vmove "usr/lib/*.a"
vmove "usr/lib/*.so"
vmove usr/lib/pkgconfig
}
}
```
All subpackages need an additional symlink to the `main` pkg, otherwise dependencies
requiring those packages won't find its `template` i.e:
```
/srcpkgs
|- foo <- directory (main pkg)
| |- template
|- foo-devel <- symlink to `foo`
```
The main package should specify all required `build dependencies` to be able to build
all subpackages defined in the template.
An important point of `subpackages` is that they are processed after the main
package has run its `install` phase. The `pkg_install()` function specified on them
commonly is used to move files from the `main` package destdir to the `subpackage` destdir.
The helper functions `vinstall`, `vmkdir`, `vcopy` and `vmove` are just wrappers that simplify
the process of creating, copying and moving files/directories between the `main` package
destdir (`$DESTDIR`) to the `subpackage` destdir (`$PKGDESTDIR`).
Subpackages are processed always in alphabetical order; To force a custom order,
the `subpackages` variable can be declared with the wanted order.
<a id="pkgs_development"></a>
### Development packages
A development package, commonly generated as a subpackage, shall only contain
files required for development, that is, headers, static libraries, shared
library symlinks, pkg-config files, API documentation or any other script
that is only useful when developing for the target software.
A development package should depend on packages that are required to link
against the provided shared libraries, i.e if `libfoo` provides the
`libfoo.so.2` shared library and the linking needs `-lbar`, the package
providing the `libbar` shared library should be added as a dependency;
and most likely it shall depend on its development package.
If a development package provides a `pkg-config` file, you should verify
what dependencies the package needs for dynamic or static linking, and add
the appropriate `development` packages as dependencies.
Development packages for the C and C++ languages usually `vmove` the
following subset of files from the main package:
* Header files `usr/include`
* Static libraries `usr/lib/*.a`
* Shared library symbolic links `usr/lib/*.so`
* Cmake rules `usr/lib/cmake`
* Package config files `usr/lib/pkgconfig`
<a id="pkgs_data"></a>
### Data packages
Another common subpackage type is the `-data` subpackage. This subpackage
type used to split architecture independent, big(ger) or huge amounts
of data from a package's main and architecture dependent part. It is up
to you to decide, if a `-data` subpackage makes sense for your package.
This type is common for games (graphics, sound and music), part libraries (CAD)
or card material (maps). Data subpackages are almost always `noarch=yes`.
The main package must then have `depends="${pkgname}-data-${version}_${revision}"`,
possibly in addition to other, non-automatic depends.
<a id="pkgs_documentation"></a>
### Documentation packages
Packages intended for user interaction do not always unconditionally require
their documentation part. A user who does not want to e.g. develop
with Qt5 will not need to install the (huge) qt5-doc package.
An expert may not need it or opt to use an online version.
In general a `-doc` package is useful, if the main package can be used both with
or without documentation and the size of the documentation isn't really small.
The base package and the `-devel` subpackage should be kept small so that when
building packages depending on a specific package there is no need to install large
amounts of documentation for no reason. Thus the size of the documentation part should
be your guidance to decide whether or not to split off a `-doc` subpackage.
<a id="pkgs_python"></a>
### Python packages
Python packages should be built with the `python{,2,3}-module` build style, if possible.
This sets some environment variables required to allow cross compilation. Support to allow
building a python module for multiple versions from a single template is also possible.
To allow cross compilation, the `python-devel` package (for python 2.7) must be added
to `hostmakedepends` and `makedepends`. If any other python version is also supported,
for example python3.4, those must also be added as host and target build dependencies.
The following variables may influence how the python packages are built and configured
at post-install time:
- `pycompile_module`: this variable expects the python modules that should be `byte-compiled`
at post-install time. Python modules are those that are installed into the `site-packages`
prefix: `usr/lib/pythonX.X/site-packages`. Multiple python modules may be specified separated
by blanks, i.e `pycompile_module="foo blah"`.
- `pycompile_dirs`: this variable expects the python directories that should be `byte-compiled`
recursively by the target python version. This differs from `pycompile_module` in that any
path may be specified, i.e `pycompile_dirs="usr/share/foo"`.
- `pycompile_version`: this variable expects the python version that is used to
byte-compile the python code (it generates the `.py[co]` files at post-install time).
By default it's set to `2.7` for `python 2.x` packages.
> NOTE: you need to define it *only* for non-Python modules.
- `python_version`: this variable expects the supported Python major version.
By default it's set to `2`. This variable is needed for multi-language
applications (e.g., the application is written in C while the command is
written in Python) or just single Python file ones that live in `/usr/bin`.
Also, a set of useful variables are defined to use in the templates:
| Variable | Value |
|-------------|----------------------------------|
| py2_ver | 2.X |
| py2_lib | /usr/lib/python2.X |
| py2_sitelib | /usr/lib/python2.X/site-packages |
| py2_inc | /usr/include/python2.X |
| py3_ver | 3.X |
| py3_lib | /usr/lib/python3.X |
| py3_sitelib | /usr/lib/python3.X/site-packages |
| py3_inc | /usr/include/python3.Xm |
> NOTE: it's expected that additional subpkgs must be generated to allow packaging for multiple
python versions.
<a id="pkgs_go"></a>
### Go packages
Go packages should be built with the `go` build style, if possible.
The `go` build style takes care of downloading Go dependencies and
setting up cross compilation.
The following variables influence how Go packages are built:
- `go_import_path`: The import path of the package included in the
distfile, as it would be used with `go get`. For example, GitHub's
`hub` program has the import path `github.com/github/hub`. This
variable is required.
- `go_package`: A space-separated list of import paths of the packages
that should be built. Defaults to `go_import_path`.
- `go_get`: If set to yes, the package specified via `go_import_path`
will be downloaded with `go get`. Otherwise, a distfile has to be
provided. This option should only be used with `-git` (or similar)
packages; using a versioned distfile is preferred.
- `go_build_tags`: An optional, space-separated list of build tags to
pass to Go.
Occasionally it is necessary to perform operations from within the Go
source tree. This is usually needed by programs using go-bindata or
otherwise preping some assets. If possible do this in pre_build().
The path to the package's source inside `$GOPATH` is available as
`$GOSRCPATH`.
<a id="pkgs_haskell"></a>
### Haskell packages
We build Haskell package using `stack` from
[Stackage](http://www.stackage.org/), generally the LTS versions.
Haskell templates need to have host dependencies on `ghc` and `stack`,
and set build style to `haskell-stack`.
The following variables influence how Haskell packages are built:
- `stackage`: The Stackage version used to build the package, e.g.
`lts-3.5`. Alternatively:
- You can prepare a `stack.yaml` configuration for the project and put it
into `files/stack.yaml`.
- If a `stack.yaml` file is present in the source files, it will be used
- `make_build_args`: This is passed as-is to `stack build ...`, so
you can add your `--flag ...` parameters there.
<a id="pkgs_font"></a>
### Font packages
Font packages are very straightforward to write, they are always set with the
following variables:
- `noarch=yes`: Font packages don't install arch specific files.
- `depends="font-util"`: because they are required for regenerating the font
cache during the install/removal of the package
- `font_dirs`: which should be set to the directory where the package
installs its fonts
<a id="notes"></a>
### Notes
- Make sure that all software is configured to use the `/usr` prefix.
- Binaries should always be installed at `/usr/bin`.
- Manual pages should always be installed at `/usr/share/man`.
- If a software provides **shared libraries** and headers, probably you should
create a `development package` that contains `headers`, `static libraries`
and other files required for development (not required at runtime).
- If you are updating a package please be careful with SONAME bumps, check
the installed files (`./xbps-src show-files pkg`) before pushing new updates.
- Make sure that binaries are not stripped by the software, let xbps-src do this;
otherwise the `debug` packages won't have debugging symbols.
<a id="contributing"></a>
### Contributing via git
Fork the voidlinux `void-packages` git repository on github and clone it:
$ git clone git@github.com:<user>/void-packages.git
You can now make your own commits to the `forked` repository:
$ git add ...
$ git commit ...
$ git push ...
To keep your forked repository always up to date, setup the `upstream` remote
to pull in new changes:
$ git remote add upstream git://github.com/void-linux/void-packages.git
$ git pull upstream master
Once you've made changes to your `forked` repository you can submit
a github pull request; see https://help.github.com/articles/fork-a-repo for more information.
For commit messages please use the following rules:
- If you've imported a new package use `"New package: <pkgname>-<version>"`.
- If you've updated a package use `"<pkgname>: update to <version>."`.
- If you've removed a package use `"<pkgname>: removed ..."`.
- If you've modified a package use `"<pkgname>: ..."`.
<a id="help"></a>
## Help
If after reading this `manual` you still need some kind of help, please join
us at `#xbps` via IRC at `irc.freenode.net`.
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