Debian Binary Package Building HOWTO by Chr. Clemens Lee
2002-11-30, $Date: 2005/08/09 20:49:46 $
Revision History | ||
---|---|---|
Revision 4.0 | 2005-08-09 | Revised by: ccl |
updated email address and added link to Turkish translation by Oguz Yarimtepe | ||
Revision 3.0 | 2003-12-19 | Revised by: ccl |
fixed two typos reported by Claudio Cattazzo | ||
Revision 2.0 | 2003-12-13 | Revised by: ccl |
applying Frank Lichtenheld's feedback | ||
Revision 1.0 | 2003-11-08 | Revised by: ccl |
first version |
- Table of Contents
- 1. Introduction
-
- 1.1. Resources on the Web
- 2. Getting Started
- 3. Package Structure
- 3.1. debian-binary
- 3.2. data.tar.gz
- 3.3. control.tar.gz
- 4. Hands On
- 5. Double Check
- 5.1. lintian
- 5.2. Minimal Documentation
- 5.3. fakeroot
- 5.4. More Documentation
- 6. Summary
- 7. What Else
- 8. Credits
- 9. Links
1. Introduction
The intended use of such a newly created archive is to install it only on your own box, not to get them into the official Debian distribution. To follow the 'official' process, please study the Debian New Maintainers' Guide.Normal Debian packages get a proper source package, including a debian/rules file which automates the steps involved in creating the binary package. Here we just show how to package a simple shell script or binary executable into a small binary package.
BTW, I assume you know how to use 'tar', 'man', and what a '.tar.gz' file and Debian is (and how to use an editor ;-), but I assume you have never touched programs like 'ar' or 'dpkg'.
1.1. Resources on the Web
The Debian Reference gives an excellent overview as well as detailed information for everything Debian specific.The official document for creating your own Debian packages is the Debian New Maintainers' Guide.
2. Getting Started
From the Debian Reference 2.2.2 2002-11-30: "The internals of this Debian binary package format are described in the deb(5) manual page. Because this internal format is subject to change (between major releases of Debian), always use dpkg-deb(8) for manipulating .deb files."From the dpkg-deb man page: "dpkg-deb packs, unpacks and provides information about Debian archives. .deb files can also be manipulated with ar and tar alone if necessary. Use dpkg to install and remove packages from your system."
You might find lots of example .deb files in directory '/var/cache/apt/archives/'. With 'dpkg-deb -I somepackage.deb' you might get a general overview of what this package offers in particular. 'dpkg-deb -c somepackage.deb' lists all files which will be installed.
List content of the .deb file with 'ar tv somepackage.deb'. Use the 'x' option to extract the files.
3. Package Structure
Let's examine one example package a little bit closer. E.g. file 'parted_1.4.24-4_i386.deb' contains these three files:$ ar tv parted_1.4.24-4_i386.deb
rw-r--r-- 0/0 4 Mar 28 13:46 2002 debian-binary
rw-r--r-- 0/0 1386 Mar 28 13:46 2002 control.tar.gz
rw-r--r-- 0/0 39772 Mar 28 13:46 2002 data.tar.gz |
3.1. debian-binary
The content of this file is "2.0\n". This states the version of the deb file format. For 2.0 all other lines get ignored.3.2. data.tar.gz
The 'data.tar.gz' file contains all the files that will be installed with their destination paths:drwxr-xr-x root/root 0 2002-03-28 13:44:57 ./
drwxr-xr-x root/root 0 2002-03-28 13:44:49 ./sbin/
-rwxr-xr-x root/root 31656 2002-03-28 13:44:49 ./sbin/parted
drwxr-xr-x root/root 0 2002-03-28 13:44:38 ./usr/
drwxr-xr-x root/root 0 2002-03-28 13:44:41 ./usr/share/
drwxr-xr-x root/root 0 2002-03-28 13:44:38 ./usr/share/man/
drwxr-xr-x root/root 0 2002-03-28 13:44:52 ./usr/share/man/man8/
-rw-r--r-- root/root 1608 2002-03-28 13:44:37 ./usr/share/man/man8/parted.8.gz
drwxr-xr-x root/root 0 2002-03-28 13:44:41 ./usr/share/doc/
drwxr-xr-x root/root 0 2002-03-28 13:44:52 ./usr/share/doc/parted/
-rw-r--r-- root/root 1880 2002-03-07 14:20:08 ./usr/share/doc/parted/README.Debian
-rw-r--r-- root/root 1347 2002-02-27 01:40:50 ./usr/share/doc/parted/copyright
-rw-r--r-- root/root 6444 2002-03-28 13:37:33 ./usr/share/doc/parted/changelog.Debian.gz
-rw-r--r-- root/root 15523 2002-03-28 02:36:43 ./usr/share/doc/parted/changelog.gz |
3.3. control.tar.gz
In our example this file has the following content:-rw-r--r-- 1 root root 1336 Mar 28 2002 control
-rw-r--r-- 1 root root 388 Mar 28 2002 md5sums
-rwxr-xr-x 1 root root 253 Mar 28 2002 postinst
-rwxr-xr-x 1 root root 194 Mar 28 2002 prerm |
1d15dcfb6bb23751f76a2b7b844d3c57 sbin/parted
4eb9cc2e192f1b997cf13ff0b921af74 usr/share/man/man8/parted.8.gz
2f356768104a09092e26a6abb012c95e usr/share/doc/parted/README.Debian
a6259bd193f8f150c171c88df2158e3e usr/share/doc/parted/copyright
7f8078127a689d647586420184fc3953 usr/share/doc/parted/changelog.Debian.gz
98f217a3bf8a7407d66fd6ac8c5589b7 usr/share/doc/parted/changelog.gz |
'prerm' and 'postinst' seem to take care of removing old documentation files and adding a link from doc to share/doc.
$ cat control
Package: parted
Version: 1.4.24-4
Section: admin
Priority: optional
Architecture: i386
Depends: e2fsprogs (>= 1.27-2), libc6 (>= 2.2.4-4), libncurses5 (>= \
5.2.20020112a-1), libparted1.4 (>= 1.4.13+14pre1), libreadline4 (>= \
4.2a-4), libuuid1
Suggests: parted-doc
Conflicts: fsresize
Replaces: fsresize
Installed-Size: 76
Maintainer: Timshel Knoll |
4. Hands On
Now it is time to get practical ourselves. I have a simple shell script named 'linuxstatus' which I want to install as '/usr/bin/linuxstatus'. So first let's create a directory named 'debian' next to the file 'linuxstatus'.$ mkdir -p ./debian/usr/bin
$ cp linuxstatus ./debian/usr/bin |
4.1. control
Let's start with the control file. The version number must have a dash with an additional Debian package version number, e.g. '1.1-1'. If your program consists e.g. only of portable shell scripts, use 'all' as its 'Architecture'.For 'Depends' you might need to find out to which package a certain file or program your new package relies onto belongs to. You can use 'dpkg -S
$ dkpg -S /bin/cat
coreutils: /bin/cat |
As a side note, there are two more ways to find the same information. There is a web page where you can search for Debian files: http://www.debian.org/distrib/packages. Go to the bottom of that page to fill out the web form.
Last not least there is a nice GUI application named 'kpackage', which provides convenient package browsing options and also allows to search after packages given individual file names.
'Suggests', 'Conflicts', and 'Replaces' etc. can be left out if not needed.
So here is the result of our first 'control' file:
Package: linuxstatus
Version: 1.1-1
Section: base
Priority: optional
Architecture: all
Depends: bash (>= 2.05a-11), textutils (>= 2.0-12), awk, procps (>= \
1:2.0.7-8), sed (>= 3.02-8), grep (>= 2.4.2-3), coreutils (>= 5.0-5)
Maintainer: Chr. Clemens Lee |
$ mkdir -p debian/DEBIAN
$ find ./debian -type d | xargs chmod 755 # this is necessary on Debian Woody, don't ask me why
$ cp control debian/DEBIAN |
4.2. dpkg-deb
Now it is almost done. Just type:$ dpkg-deb --build debian
dpkg-deb: building package `linuxstatus' in `debian.deb'.
$ mv debian.deb linuxstatus_1.1-1_all.deb |
root# dpkg -i ./linuxstatus_1.1-1_all.deb |
If you are curious about the version numbering scheme and naming conventions for a Debian package, have a read at this section in The Debian Reference.
5. Double Check
Now that you have gotten a first impression and build your own binary package, it is time to get a little bit more serious and have a look at the quality of the package that we have produced.5.1. lintian
Luckily for us the Debian project provides a 'lint' like tool for checking Debian packages. This tool is named 'lintian'. If you have not installed it yet on your system, this is a good moment (apt-get install lintian).Now we use this little treasure tool on our new package file:
$ lintian linuxstatus_1.1-1_all.deb
E: linuxstatus: binary-without-manpage linuxstatus
E: linuxstatus: no-copyright-file
W: linuxstatus: prerm-does-not-remove-usr-doc-link
W: linuxstatus: postinst-does-not-set-usr-doc-link |
5.2. Minimal Documentation
This is not the place to say much about writing and creating man pages, there are many books that have one or another chapter related to this topic and there is also The Linux MAN-PAGE-HOWTO online. So lets do a little time warp and assume you have now a perfect man page for your script at location ./man/man1/linuxstatus.1.The same for a 'copyright' file. You can find enough examples under the /usr/share/doc directory with this command: find /usr/share/doc -name "copyright"
So here is our own example of a 'copyright' file:
linuxstatus
Copyright: Chr. Clemens Lee |
Now we create the debian package again. In the 'control' file we first increase the version number from 1.1-1 to 1.2-1 (since we have written a new man page we increase our internal release number). We also need to copy the new files to their appropriate places:
$ mkdir -p ./debian/usr/share/man/man1
$ mkdir -p ./debian/usr/share/doc/linuxstatus
$ find ./debian -type d | xargs chmod 755
$ cp ./man/man1/linuxstatus.1 ./debian/usr/share/man/man1
$ cp ./copyright ./debian/usr/share/doc/linuxstatus
$ cp ./prerm ./postinst ./debian/DEBIAN
$ gzip --best ./debian/usr/share/man/man1/linuxstatus.1
$
$ dpkg-deb --build debian
dpkg-deb: building package `linuxstatus' in `debian.deb'.
$ mv debian.deb linuxstatus_1.2-1_all.deb |
5.3. fakeroot
Now lets see if our package has become a better Debian citizen:$ lintian linuxstatus_1.2-1_all.deb
E: linuxstatus: control-file-has-bad-owner prerm clemens/clemens != root/root
E: linuxstatus: control-file-has-bad-owner postinst clemens/clemens != root/root
E: linuxstatus: bad-owner-for-doc-file usr/share/doc/linuxstatus/ clemens/clemens != root/root
E: linuxstatus: bad-owner-for-doc-file usr/share/doc/linuxstatus/copyright clemens/clemens != root/root
E: linuxstatus: debian-changelog-file-missing |
$ fakeroot dpkg-deb --build debian
dpkg-deb: building package `linuxstatus' in `debian.deb'.
$ mv debian.deb linuxstatus_1.2-1_all.deb
$ lintian linuxstatus_1.2-1_all.deb
E: linuxstatus: debian-changelog-file-missing |
5.4. More Documentation
Let me tell you already that next to a 'changelog' file in the 'doc/linuxstatus' directory a 'changelog.Debian' file is also required. Both should be gzipped as well.Here are two example files, 'changelog':
linuxstatus (1.2-1)
* Made Debian package lintian clean.
-- Chr. Clemens Lee |
linuxstatus Debian maintainer and upstream author are identical.
Therefore see also normal changelog file for Debian changes. |
Now hopefully our last step will be:
$ cp ./changelog ./changelog.Debian ./debian/usr/share/doc/linuxstatus
$ gzip --best ./debian/usr/share/doc/linuxstatus/changelog
$ gzip --best ./debian/usr/share/doc/linuxstatus/changelog.Debian
$ fakeroot dpkg-deb --build ./debian
dpkg-deb: building package `linuxstatus' in `debian.deb'.
$ mv debian.deb linuxstatus_1.2-1_all.deb
$ lintian linuxstatus_1.2-1_all.deb |
root# dpkg -i ./linuxstatus_1.2-1_all.deb
(Reading database ... 97124 files and directories currently installed.)
Preparing to replace linuxstatus 1.1-1 (using linuxstatus_1.2-1_all.deb) ...
Unpacking replacement linuxstatus ...
Setting up linuxstatus (1.2-1) ... |
6. Summary
Not to get confused, let us recapture all steps we have taken to build our binary Debian package.Prerequisite files:
- one or more binary executable or shell script files
- a man page for each executable file
- a 'control' file
- a 'copyright' file
- a 'changelog' and 'changelog.Debian' file
- create 'debian/usr/bin' directory (or wherever you plan to place your executable files)
- create 'debian/usr/share/man/man1' (or whatever section your man page belongs into)
- create 'debian/DEBIAN' directory
- create 'debian/usr/share/doc/
' - make sure all sub directories of 'debian' have file permission 0755
- copy executable file into 'debian/usr/bin' directory (or wherever you plan to place your executable files)
- copy man page file into 'debian/usr/share/man/man1' directory
- copy 'control' file into 'debian/DEBIAN' directory
- copy 'copyright', 'changelog', and 'changelog.Debian' files into 'debian/usr/share/doc/
' - gzip man page, 'copyright', 'changelog', and 'changelog.Debian' files with option '--best' inside the temporary 'debian' tree
- invoke 'dpkg-deb --build' using 'fakeroot' on the 'debian' directory
- rename resulting 'debian.deb' file to its final package name including version and architecture information
- check resulting .deb package file for Debian policy compliance using 'lintian'
7. What Else
There are many details which have not been covered here, like how to distribute Unix daemons, configuration files and much more.But most important, I want to emphasize again that for Debian maintainers, packages are source packages, not binary packages. They never interact directly with the internals binary packages. In fact only 'dpkg-deb' and 'dpkg' developers need to know what they are. In fact it is not recommended to do so.
If a developer were to explain someone how to build a Debian package, he will certainly explain how to make a source package and how to build it.
On the other hand, not every developer wants to submit his software to Debian (yet), but still wants to profit from the advantages a packaging system like 'dpkg' offers without releasing package source code. Personally I will release my freeware projects still as tar.gz files with source code etc. for all kind of platforms, while I plan to offer more and more '.deb' packages for the convenience of Debian users who just want to install and use my software.
If someone wants to do the next step to submit a software package to Debian, you have to move on to study the Debian New Maintainers' Guide as well as the Debian Policy Manual first. On your undertaking to create a Debian source package, also have a look at the debian-mentors mailing list to see experienced and beginning Debian developers interacting with each other and tackling similar problem you might encounter.
8. Credits
Thanks to- Colin Watson for contributing a sentence in the abstract and giving feedback regarding structure, focus and title of this HowTo,
- Bill Allombert for contributing a sentence in the 'What Else' section and giving feedback reinforcing what Colin had said as well,
- Santiago Vila for pointing out that 'md' is a local alias and the (Unix) world has standardized on 'mkdir',
- Tabatha Marshall from the TLDP project for general support,
- Joey Hess, Carlo Perassi, and Joe Riel for minor corrections,
- Claudio Cattazzo for conversion of my private xml document to standard docbook format together which resulted also in a number of minor corrections and improvements [2003-10-04],
- Frank Lichtenheld for finding errors introduced when the HTML pages get generated and for suggesting to use 'dpkg -S
' when looking for a package containing a certain file [2003-12-13], - Hugh Hartmann for translating this HOWTO to Italian and Claudio Cattazzo for revising the translation [2003-12-13], and
- Oguz Yarimtepe for translating this HOWTO to Turkish [2005-08-09].
9. Links
Debian New Maintainers' Guide: | http://www.debian.org/doc/maint-guide/ |
Debian: | http://www.debian.org/ |
The Debian Reference: | http://www.debian.org/doc/manuals/reference/reference.en.html |
Debian Packages: | http://www.debian.org/distrib/packages |
Writing Debian package descriptions: | http://people.debian.org/~walters/descriptions.html |
The Linux MAN-PAGE-HOWTO: | http://www.tldp.org/HOWTO/mini/Man-Page.html |
Debian Policy Manual: | http://www.debian.org/doc/debian-policy/ |
Debian Mentors: | http://lists.debian.org/debian-mentors/ |
The Linux Documentation Project: | http://www.tldp.org/ |
Plug: my own little Unix page: | http://www.kclee.de/clemens/unix/ |
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