.\" Hey, Emacs!  This is an -*- nroff -*- source file.
.\" Authors: Ian Jackson
.TH DPKG\-SOURCE 1 "7th Auguest" "Debian Project" "Debian GNU/Linux manual"
.SH NAME 
dpkg\-source, dpkg\-gencontrol, dpkg\-genchanges,
dpkg\-buildpackage, dpkg\-distaddfile, dpkg\-parsechangelog
\- Debian source package tools
.SH SYNOPSIS
.B dpkg-source
.BI "-x " filename .dsc
.br
.B dpkg-source -b
.RI [ options "] " directory " [" orig-directory |'']
.br
.B dpkg-gencontrol
.RI [ options ]
.br
.B dpkg-genchanges
.RI [ options ]
.br
.B dpkg-buildpackage
.RI [ options ]
.br
.B dpkg-distaddfile
.RI [ options ] " filename section priority"
.br
.B dpkg-parsechangelog
.RI [ options ]
.SH DESCRIPTION
.B dpkg-source
packs and unpacks Debian source archives.

.B dpkg-gencontrol
reads information from an unpacked Debian source tree and generates a
binary package control file on standard output; it also adds an entry
for the binary package to
.BR debian/files .

.B dpkg-genchanges
reads information from an unpacked and built Debian source tree and
from the files it has generated and generates a Debian upload control
file
.RB ( .changes " file)."

.B dpkg-buildpackage
Is a control script which can be used to help automate the building of
a package.

.B dpkg-distaddfile
adds an entry for a named file to
.BR debian/files .

.B dpkg-parsechangelog
reads and parses the changelog of an unpacked Debian source tree and
outputs the information in it to standard output in a machine-readable
form.

None of these commands allow multiple options to be combined into one,
and they do not allow the value for an option to be specified in a
separate argument.
.SH COMMON OPTIONS
Many of these programs share options; these are described here,
together with the programs that accept them.
.TP
.BI -h
Display the particular program's version and usage message, including
a synopsis of the options it understands.  This option is understood
by all the source package tools.
.TP
.BI -v version
In
.BR dpkg-genchanges " and " dpkg-parsechangelog
this causes changelog information from all versions strictly later
than
.I version
(which must appear in the changelog file) to be used.

In
.BR dpkg-gencontrol
it sets the version number of the binary package which will be
generated.
.TP
.BI -V name = value
Set an output substitution variable.
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
See below for a discussion of output substitution.
.TP
.BI -T substvarsfile
Read substitution variables from
.IR substvarsfile ;
the default is
.BR debian/substvars .
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.TP
.BI -D field = value
Override or add an output control file field.
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.TP
.BI -U field
Remove an output control file field.
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.TP
.BR -b | -B
For
.BR dpkg-genchanges " and " dpkg-buildpackage
this specifies that a binary-only build is taking place.
.B -b
indicates that no source files are to be built and/or distributed, and
.B -B
that no architecture-independent binary package files are to be
distributed either.

.B -b
tells
.B dpkg-source
to build a source package (rather than to extract one) - see below.
.TP
.BI -c controlfile
Specifies the main source control file to read information from.  The
default is
.BR debian/control .
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.TP
.BI -l changelogfile
Specifies the change log file to read information from.  The
default is
.BR debian/changelog .
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.TP
.BI -f fileslistfile
Read or write the list of files to be uploaded here, rather than using
.BR debian/files .
This option is understood by
.BR dpkg-gencontrol ", " dpkg-genchanges " and " dpkg-distaddfile .
.TP
.BI -F changelogformat
Specifies the format of the changelog.  By default the format is read
from a special line near the bottom of the changelog (see the
programmers' manual) or failing that defaults to
.BR debian ,
the standard format described in the
.IR "dpkg programmers' manual" .
This option is understood by
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges .
.SH DPKG-SOURCE OPTIONS
.TP
.B -x
Extract a source package.  One non-option argument should be supplied,
the name of the Debian source control file
.RB ( .dsc ).
No options are useful with
.BR "dpkg-source -x" .
.B dpkg-source
will read the names of the other file(s) making up the source package
from the control file; they are assumed to be in the same directory as
the
.BR .dsc .
.TP
.B -b
Build: pack up a source tree.  One or two non-option arguments should
be supplied.  The first is taken as the name of the directory
containing the unpacked source tree.  If a second argument is supplied
it should either be the name of the original source directory or the
empty string if the package is a Debian-specific one and so has no
Debianisation diffs.  If no second argument is supplied then
.B dpkg-source
will assume the directory
.IB directory .orig
if exists or the empty string (no original source, and so no diff) if
it doesn't.
.SH DPKG-GENCONTROL OPTIONS
.B dpkg-gencontrol
does not take any non-option arguments.
.TP
.BI -p package
Generate information for the binary package
.IR package .
If the source control file lists several binary packages then this
option may be omitted; otherwise it is essential to select which
binary package's information to generate.
.TP
.BR -is ", " -ip ", " -isp
Include the
.BR Section " and " Priority
fields for this package from the main source control file in the
binary package control file being generated.  Usually this information
is not included here, but only in the
.B .changes
file.
.B -isp
includes both fields,
.BR -is " only the " Section " and " -ip " only the " Priority .
.SH DPKG-GENCHANGES OPTIONS
.B dpkg-gencontrol
does not take any non-option arguments.
.TP
.BI -d changesdescription
Read the description of the changes from the file
.I changesdescription
rather than using the information from the source tree's changelog
file.
.TP
.BI -m maintaineraddress
Use
.I maintaineraddress
as the name and email address of the maintainer for this upload,
rather than using the information from the source tree's changelog.
.TP
.BI -u uploadfilesdir
Look for the files to be uploaded in
.I uploadfilesdir
rather than
.B ..
.RB ( dpkg-genchanges
needs to find these files so that it can include their sizes and
checksums in the
.B .changes
file).
.SH DPKG-BUILDPACKAGE OPTIONS
.B dpkg-buildpackage
does not take any non-option arguments.
.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.
.I gain-root-command
should be 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
should not contain spaces or any other shell metacharacters.
.TP
.BI -p pgp-command
When
.B dpkg-buildpackage
needs to execute PGP to sign a source control
.RB ( .dsc )
file or a
.B .changes
file it will run
.I pgp-command
(searching the
.B PATH
if necessary) instead of
.BR pgp .
.I pgp-command
will get all the arguments that
.B pgp
would have done.
.I pgp-command
should not contain spaces or any other shell metacharacters.
.TP
.BR -us ", " -uc
Do not PGP-sign the source package or the changelog, respectively.
.SH DPKG-DISTADDFILE ARGUMENTS
.B dpkg-distaddfile
does not take any non-common options.  It takes three non-option
arguments, the filename and the section and priority for the
.B .changes
file.

The filename should be specified relative to the directory where
.B dpkg-genchanges
will expect to find the files, usually
.BR .. ,
rather than being a pathname relative to the current directory when
.B dpkg-distaddfile
is run.
.SH DPKG-PARSECHANGELOG ARGUMENTS
.B dpkg-parsechangelog
does not take any non-common options or non-option arguments.
.SH VARIABLE SUBSTITUTION
Before
.BR dpkg-source ", " dpkg-gencontrol " and " dpkg-genchanges
write their control information (to the source control file
.B .dsc
for
.B dpkg-source
and to standard output for
.BR dpkg-gencontrol " and " dpkg-genchanges )
they perform some variable substitutions on the output file.

A variable substitution has the form
.BI ${ variable-name }\fR.
Variable substitutions are performed repeatedly until none are left;
the full text of the field after the substitution is rescanned to look
for more substitutions.

After all the substitutions have been done each occurence of the
string
.B ${}
(which is not a legal substitution) is replaced with a
.B $
sign.

Variables whose names consist entirely of alphanumerics can be set
using the
.B -V
common option.

They can be also specified in the file
.B debian/substvars
(or whatever other file is specified using the
.B -T
option).  This file consists of lines of the form
.IB name = value
(where
.B name
is a string of alphanumerics).  Trailing whitespace on each line,
blank lines, and lines starting with a
.B #
symbol (comments) are ignored.

Additionally, the following standard variables are available:
.TP
.BI arch
The current build architecture (from
.BR "dpkg \-\-print-architecture" ).
.TP
.B sourceversion
The source package version (from the changelog file).
.TP
.BI f: fieldname
The value of the output field
.IR fieldname .
.TP
.B Format
The
.B .changes
file format version generated by this version of the source packaging
scripts.  If you set this variable the contents of the
.B Format
field in the
.B .changes
file will change too.
.TP
.BR newline ", " space ", " tab
These variables each hold the corresponding character.

If a variable is referred to but not defined it generates a warning
and an empty value is assumed.
.SH FILES
.TP
.B debian/control
The main source control information file, giving version-independent
information about the source package and the binary packages it can
produce.
.TP
.B debian/changelog
The changelog file, used to obtain version-dependent information about
the source package, such as the urgency and distribution of an upload,
the changes made since a particular release, and the source version
number itself.
.TP
.B debian/files
The list of generated files which are part of the upload being
prepared.
.B dpkg-gencontrol
adds the presumed filenames of binary packages whose control files it
generates here;
.B dpkg-distaddfile
can be used to add additional files.
.B dpkg-genchanges
reads the data here when producing a
.B .changes
file.
.TP
.B debian/substvars
List of substitution variables and values.
.SH BUGS
The point at which field overriding occurs compared to certain
standard output field settings is rather confused.

The binary package entries in the 
.B debian/files
file will be passed through variable substitution twice.  This should
not matter, since
.BR $ ", " { " and " }
are not legal in package names or version numbers.
.SH SEE ALSO
.IR "dpkg programmers' manual" ,
.IR "Debian policy manual" ,
.BR dpkg\-deb (8),
.BR dpkg (8),
.BR dselect (8).
.SH AUTHOR
The utilities and this manpage were written by Ian Jackson.  They are
Copyright (C)1995-1996 by him and released under the GNU General
Public Licence; there is NO WARRANTY.  See
.B /usr/doc/copyright/dpkg
and
.B /usr/doc/copyright/GPL
for details.