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.\" dpkg manual page - dpkg-buildpackage(1)
.\"
.\" Copyright © 1995-1996 Ian Jackson
.\" Copyright © 2000 Wichert Akkerman <wakkerma@debian.org>
.\" Copyright © 2007-2008 Frank Lichtenheld <djpig@debian.org>
.\" Copyright © 2008-2013 Guillem Jover <guillem@debian.org>
.\" Copyright © 2008-2012 Raphaël Hertzog <hertzog@debian.org>
.\"
.\" This is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
.\" the Free Software Foundation; either version 2 of the License, or
.\" (at your option) any later version.
.\"
.\" This is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public License
.\" along with this program.  If not, see <http://www.gnu.org/licenses/>.
.
.TH dpkg\-buildpackage 1 "2013-04-02" "Debian Project" "dpkg utilities"
.SH NAME
dpkg\-buildpackage \- build binary or source packages from sources
.
.SH SYNOPSIS
.B dpkg\-buildpackage
.RI [ option ...]
.
.SH DESCRIPTION
.B dpkg\-buildpackage
is a program that automates the process of building a Debian package. It
consists of the following steps:
.IP \fB1.\fP 3
It prepares the build environment by setting various environment
variables (see \fBENVIRONMENT\fP) and calls \fBdpkg\-source
\-\-before\-build\fP (unless \fB\-T\fP or \fB\-\-target\fP has been used).
.IP \fB2.\fP 3
It checks that the build-dependencies and build-conflicts
are satisfied (unless \fB\-d\fP is specified).
.IP \fB3.\fP 3
If a specific target has been selected with the \fB\-T\fP or \fB\-\-target\fP
option, it calls that target and stops here. Otherwise it calls
\fBfakeroot debian/rules clean\fP to clean the build-tree (unless
\fB\-nc\fP is specified).
.IP \fB4.\fP 3
It calls \fBdpkg\-source \-b\fP to generate the source package (unless
a binary\-only build has been requested with \fB\-b\fP, \fB\-B\fP or
\fB\-A\fP).
.IP \fB5.\fP 3
It calls \fBdebian/rules\fP \fIbuild-target\fP followed by
\fBfakeroot debian/rules\fP \fIbinary-target\fP (unless a source-only
build has been requested with \fB\-S\fP). Note that \fIbuild-target\fR
and \fIbinary-target\fP are either \fBbuild\fP and \fBbinary\fP (default
case, or if \fB\-b\fP is specified), or \fBbuild\-arch\fP and
\fBbinary\-arch\fP (if \fB\-B\fP is specified), or \fBbuild\-indep\fP and
\fBbinary\-indep\fP (if \fB\-A\fP is specified).
.IP \fB6.\fP 3
It calls \fBgpg\fP to sign the \fB.dsc\fP file (if any, unless
\fB\-us\fP is specified or on UNRELEASED builds).
.IP \fB7.\fP 3
It calls \fBdpkg\-genchanges\fP to generate a \fB.changes\fP file.
Many \fBdpkg\-buildpackage\fP options are forwarded to
\fBdpkg\-genchanges\fP.
.IP \fB8.\fP 3
It calls \fBgpg\fP to sign the \fB.changes\fP file (unless \fB\-uc\fP
is specified or on UNRELEASED builds).
.IP \fB9.\fP 3
If \fB\-tc\fP is specified, it will call \fBfakeroot debian/rules clean\fP
again. Finally it calls \fBdpkg\-source \-\-after\-build\fP.
.
.SH OPTIONS
.TP
.B \-b
Specifies a binary-only build, no source files are to be built and/or
distributed. Passed to \fBdpkg\-genchanges\fP.
.TP
.B \-B
Specifies a binary-only build, limited to architecture dependent packages.
Passed to \fBdpkg\-genchanges\fP.
.TP
.B \-A
Specifies a binary-only build, limited to architecture independent
packages. Passed to \fBdpkg\-genchanges\fP.
.TP
.B \-S
Specifies a source-only build, no binary packages need to be made.
Passed to \fBdpkg\-genchanges\fP.
.TP
.B \-F
Specifies a normal full build, binary and source packages will be built.
This is the same as the default case when no build option is specified.
.TP
.BI \-\-target= target
.TQ
.BI "\-\-target " target
.TQ
.BI \-T target
Calls \fBdebian/rules\fP \fItarget\fP after having setup the build
environment and stops the package build process here. If
\fB\-\-as\-root\fP is also given, then the command is executed
as root (see \fB\-r\fP). Note that official targets that are required to
be run as root by the Debian policy do not need this option.
.TP
.B \-\-as\-root
Only meaningful together with \fB\-\-target\fP. Requires that the target be
run with root rights.
.TP
.B \-si
.TQ
.B \-sa
.TQ
.B \-sd
.TQ
.BI \-v version
.TQ
.BI \-C changes-description
.TQ
.BI \-m maintainer-address
.TQ
.BI \-e maintainer-address
Passed unchanged to \fBdpkg\-genchanges\fP. See its manual page.
.TP
.BI \-a architecture
Specify the Debian architecture we build for. The architecture of the
machine we build on is determined automatically, and is also the default
for the host machine.
.TP
.BI \-t gnu-system-type
Specify the GNU system type we build for. It can be used in place
of \-a or as a complement to override the default GNU system type
of the target Debian architecture.
.TP
.BI \-j jobs
Number of jobs allowed to be run simultaneously, equivalent to the
.BR make (1)
option of the same name. Will add itself to the \fBMAKEFLAGS\fP
environment variable, which should cause all subsequent make
invocations to inherit the option. Also adds \fBparallel=\fP\fIjobs\fP
to the \fBDEB_BUILD_OPTIONS\fP environment variable which allows
debian/rules files to use this information for their own purposes.
The \fBparallel=\fP\fIjobs\fP in \fBDEB_BUILD_OPTIONS\fP environment variable
will override the \fB\-j\fP value if this option is given.
.TP
.B \-D
Check build dependencies and conflicts; abort if unsatisfied. This is the
default behavior.
.TP
.B \-d
Do not check build dependencies and conflicts.
.TP
.B \-nc
Do not clean the source tree (implies \fB\-b\fP if nothing else has been
selected among \fB\-B\fP, \fB\-A\fP or \fB\-S\fP).
.TP
.B \-tc
Clean the source tree (using
.I gain-root-command
.BR "debian/rules clean" )
after the package has been built.
.TP
.BI \-r gain-root-command
When
.B dpkg\-buildpackage
needs to execute part of the build process as root, it prefixes the
command it executes with
.I gain-root-command
if one has been specified. Otherwise, if none has been specified,
\fBfakeroot\fP will be used by default, if the command is present.
.I gain-root-command
should start with the name of a program on the
.B PATH
and will get as arguments the name of the real command to run and the
arguments it should take.
.I gain-root-command
can include parameters (they must be space-separated) but no shell
metacharacters.
.I gain-root-command
might typically be
.BR fakeroot ", " sudo ", " super " or " really .
.B su
is not suitable, since it can only invoke the user's shell with
.B \-c
instead of passing arguments individually to the command to be run.
.TP
.BI \-R rules-file
Building a Debian package usually involves invoking
.B debian/rules
as a command with several standard parameters. With this option it's
possible to use another program invocation to build the package (it can
include space separated parameters).
Alternatively it can be used to execute the standard rules file with
another make program (for example by using
.B /usr/local/bin/make \-f debian/rules
as \fIrules-file\fR).
.TP
.BI \-p sign-command
When \fBdpkg\-buildpackage\fP needs to execute GPG to sign a source
control (\fB.dsc\fP) file or a \fB.changes\fP file it will run
\fIsign-command\fP (searching the \fBPATH\fP if necessary) instead of
\fBgpg\fP. \fIsign-command\fP will get all the arguments that
\fBgpg\fP would have gotten. \fIsign-command\fP
should not contain spaces or any other shell metacharacters.
.TP
.BI \-k key-id
Specify a key-ID to use when signing packages.
.TP
.BR \-us
Do not sign the source package.
.TP
.BR \-uc
Do not sign the \fB.changes\fP file.
.TP
.BR \-\-force\-sign
Force the signing of the resulting files (since dpkg 1.17.0),
regardless of \fB\-us\fP or \fB\-uc\fP or other internal heuristics.
.TP
.BR \-i [\fIregexp\fP]
.TQ
.BI \-I [\fIpattern\fP]
.TQ
.BR \-s [ nsAkurKUR ]
.TQ
.BR \-z ", " \-Z
Passed unchanged to \fBdpkg\-source\fP. See its manual page.
.TP
.BI \-\-source\-option= opt
Pass option \fIopt\fP to \fBdpkg\-source\fP.
.TP
.BI \-\-changes\-option= opt
Pass option \fIopt\fP to \fBdpkg\-genchanges\fP.
.TP
.BI \-\-admindir= dir
.TQ
.BI "\-\-admindir " dir
Change the location of the \fBdpkg\fR database. The default location is
\fI/var/lib/dpkg\fP.
.TP
.BR \-? ", " \-\-help
Show the usage message and exit.
.TP
.BR \-\-version
Show the version and exit.
.
.SH ENVIRONMENT
Even if \fBdpkg\-buildpackage\fP exports some variables, \fBdebian/rules\fP
should not rely on their presence and should instead use the
respective interface to retrieve the needed values.
.SS Variables set by dpkg\-architecture
\fBdpkg\-architecture\fP is called with the \fB\-a\fP and \fB\-t\fP
parameters forwarded. Any variable that is output by its \fB\-s\fP
option is integrated in the build environment.
.
.SH NOTES
.SS Compiler flags are no longer exported
Between dpkg 1.14.17 and 1.16.1, \fBdpkg\-buildpackage\fP
exported compiler flags (\fBCFLAGS\fP, \fBCXXFLAGS\fP, \fBFFLAGS\fP,
\fBCPPFLAGS\fP and \fBLDFLAGS\fP) with values as returned
by \fBdpkg\-buildflags\fP. This is no longer the case.
.SS Default build targets
\fBdpkg\-buildpackage\fP is using the \fBbuild\-arch\fP and
\fBbuild\-indep\fP targets since dpkg 1.16.2. Those targets are thus
mandatory. But to avoid breakages of existing packages, and ease
the transition, it will fallback to using the \fBbuild\fP target
if \fBmake \-f debian/rules \-qn\fP \fIbuild-target\fP returns 2 as
exit code.
.SH BUGS
It should be possible to specify spaces and shell metacharacters in
and initial arguments for
.IR gain-root-command " and " sign-command .
.
.SH SEE ALSO
.ad l
.nh
.BR dpkg\-source (1),
.BR dpkg\-architecture (1),
.BR dpkg\-buildflags (1),
.BR dpkg\-genchanges (1),
.BR fakeroot (1),
.BR gpg (1).