Cygwin

Get that Linux feeling - on Windows

Cygwin Package Contributor's Guide

This document is intended for people who upload packages to sourceware.org, to be made available through the standard Cygwin setup program.

Making a package with cygport
Installing your package for testing
Submitting a package
Uploading an accepted package
Updating a package

Making a package with cygport

While older, hand-made packages exist, the only accepted way to make a new Cygwin package is using the cygport tool, which automatically handles most packaging requirements and issues for you. It is also strongly recommended to convert existing packages to cygport when updating them; ask on the cygwin-apps list if you need help converting an existing package to use cygport.

The cygport framework improves on previous Cygwin build scripts, and borrows concepts from the Gentoo portage system.

Suppose that the upstream's boffo-1.0.tar.xz source tar file, that you downloaded from the boffo homepage, unpacks into boffo-1.0/.

Further, suppose you've got boffo ported to Cygwin. It took some work, but you've got a patch file, which we will name boffo-1.0-fix-whatever.patch, and with that applied boffo builds and runs.

All that remains is to write a boffo.cygport file which will describe how to unpack, configure, build and package:

# package name
NAME="boffo"
VERSION=1.0
RELEASE=1

# .hint generation
CATEGORY="Games"
SUMMARY="A whackamole simulation in ASCII art"
DESCRIPTION="A whackamole simulation in ASCII art.
Intended for use on VT100 terminals at BAUD rates 1200 and
above.  Uses arrow keys for positioning over moles.  Space
bar whacks the mole.
No actual moles will be harmed during execution of this game."

# source and patch files
SRC_URI="http://boffo.org/downloads/boffo-${VERSION}.tar.xz"
PATCH_URI="boffo-1.0-fix-whatever.patch"

# use the standard src_compile, src_install and src_test

The source and binary packages can then be built and a .hint generated by running cygport, e.g.

$ cygport boffo.cygport fetch
--2017-04-01 11:59:59--  http://boffo.org/downloads/boffo-1.0.tar.xz
Resolving boffo.org... 209.197.75.87
Connecting to boffo.org|209.197.75.87|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 352 [application/x-tar]
Saving to: ‘boffo-1.0.tar.xz.tmp’

boffo-1.0.tar.xz.tmp 100%[===================>]     352  --.-KB/s    in 0s

2017-04-01 11:59:59 (8.06 MB/s) - ‘boffo-1.0.tar.xz.tmp’ saved [352/352]

$ cygport boffo.cygport all
>>> Preparing boffo-1.0-1.x86_64
>>> Unpacking source boffo-1.0.tar.xz
*** Info: applying patch boffo-1.0-fix-whatever.patch:
>>> Preparing working source directory
>>> Compiling boffo-1.0-1.x86_64
[...]
>>> Installing boffo-1.0-1.x86_64
[...]
Fixing symlinks:
Stripping executables:
        usr/bin/boffo.exe
Preparing debuginfo source files:
        1 files
>>> Packaging boffo-1.0-1.x86_64
>>> Creating binary package(s)
>>> boffo-1.0-1.tar.xz
usr/
usr/bin/
usr/bin/boffo.exe
usr/lib/
usr/share/
usr/share/doc/
usr/share/doc/boffo/
usr/share/doc/boffo/README

>>> boffo-debuginfo-1.0-1.tar.xz
usr/lib/debug/
usr/lib/debug/usr/
usr/lib/debug/usr/bin/
usr/lib/debug/usr/bin/boffo.exe.dbg
usr/src/debug/
usr/src/debug/boffo-1.0-1/
usr/src/debug/boffo-1.0-1/boffo.c

>>> Checking packages for missing or duplicate files

>>> Creating source patches
 0 files changed
>>> Creating source package
boffo-1.0-1.src/
boffo-1.0-1.src/boffo-1.0-fix-whatever.patch
boffo-1.0-1.src/boffo-1.0.tar.xz
boffo-1.0-1.src/boffo.cygport

>>> boffo requires: cygwin libncursesw10

For more information on using cygport consult the man page, README, reference manual and sample .cygport files.

Installing your package for testing

Unfortunately, there is no tool for directly installing package files, at the moment. Two common techniques to achieve this:

For simple packages you can fake installation by directly untarring the package file and then running any postinstall scripts manually:
```
      $ tar -C / -xvf boffo-1.0-1.x86_64/dist/boffo/boffo-1.0-1.tar.xz
      $ /etc/postinstall/boffo.sh
```
For packages with dependencies, you can use an overlay package server. Note that setup can accept file:// URLs so an FTP or HTTP server is not necessary.

Submitting a new package

So you've got a package you want to submit. Follow the following checklist before emailing the cygwin-apps mailing list, and you'll almost certainly save time.

Do you have the time to maintain the package?
Packages without active maintainers are pulled from the distribution. Generally speaking the time commitment is relatively low, simply subscribe to the cygwin mailing list. We'd prefer if you read the non-digest mode since prompt response to packaging issues is a plus. When a bug in your package is reported in the cygwin mailing list, address the bug (if it's a Cygwin-only bug) or pass back to the upstream. When a solution exists, create and upload an updated package with the fix in it. Note that you are not expected to be a helpdesk for the package - the users should be pointed to the upstream's lists if you've determined that the bug is not a Cygwin-related bug.
Propose on the cygwin-apps mailing list that you are interested in becoming a package maintainer for package "foo" using a subject like "[ITP] foo 0.10".

Some packages cannot be distributed via Cygwin's setup due to upstream licence limitations. Other packages may not be appropriate for Cygwin. This step will save time if, for some reason, we cannot accept the package.
Submission rules:
- If the new package is a well-known program already included in a major Linux distribution (e.g. Debian, Fedora, SuSE) please include the URL of the package page. Note that "development", "test", and "unstable" packages are not eligible for this rule.
- If the package is not included in any major Linux distro it must receive five positive votes from other package maintainers in order to be accepted.
- Mention which open source license applies to the source.
In order to create a good .hint file do read and follow the documentation.
A few things to take extra care to:
- In order to select an appropriate a correct Category you can look in the Debian package list and identify the section that your package is present in there - if it's available via Debian. If it's not, have a look and take a sensible guess. Use existing categories if at all possible.
- Do not use the package name in sdesc, as it is added automatically by the setup program.
- Opinion on whether to mark your initial version as a Test version is currently mixed. If you have doubts about the stability of your initial offering you may decide to mark it as Test. Then, once the package has no major bug reports from users, a current package may be introduced. Otherwise, it is perfectly acceptable to forgo the Test designation in your first release.
Place the package files in a web accessible HTTP/FTP site somewhere, and provide the URL in your mail.

If at all possible, the files should have a directory structure in order to get them all with a single command. For example, if I am proposing "foo" and "libfoo", an upload site should look like:
- myserver.com/whatever/x86/foo/foo-0.20.3-1.tar.xz
- myserver.com/whatever/x86/foo/foo-0.20.3-1-src.tar.xz
- myserver.com/whatever/x86/foo/foo-0.20.3-1.hint
- myserver.com/whatever/x86/foo/libfoo/libfoo-0.20.3-1.tar.xz
- myserver.com/whatever/x86/foo/libfoo/libfoo-0.20.3-1.hint
There is no need to increase the release number if the package has not been officially released. So, if you are releasing a -1 release of a package keep using -1 for any refinements until the package has been uploaded.
Each new package must in any case receive one GTG vote from a package maintainer, meaning that an existing maintainer has downloaded the package, inspected the tar file contents, tested the applications, and rebuilt the package from the source tar file without incident. Once a successful package is produced, you become a maintainer yourself and can provide GTG reviews for others as well.

Uploading an accepted package

Once you have your GTG, follow these instructions for submitting a ssh key and uploading your package files.
Announce via the cygwin-announce mailing list that the new package is available. Use the announce message example listed later in this page as a template for your announcement.

Be sure the unsubscribe instructions are included at the end of the email, since cygwin-announce does not add any.

Once sent, your message will be reviewed by one of the cygwin-announce moderators and, once approved, will be automatically forwarded to the cygwin mailing list with an [ANNOUNCEMENT] prepended to the subject.
Feel free to delete your local copy once the files have been uploaded to sourceware.org.

Updating a package

So you've got an updated package you want to submit. You should already have upload privileges, and should be able to do the entire process yourself, by following these instructions. If you encounter any problems, email the cygwin-apps mailing list.

You must increase the version or release number. Reset the release number to 1 on a version increase.
Follow the instructions for uploading your package files.
After doing a upload, announce via the cygwin-announce mailing list that the updated package is available. Use the announce message example listed later in this page as a template for your announcement.

Once sent, your message will be reviewed by one of the cygwin-announce moderators and, once approved, will be automatically forwarded to the cygwin mailing list with an [ANNOUNCEMENT] prepended to the subject.

NOTE: On any major version upgrade, you may want to mark the release as Test.

Example announcement

Subject: New package: foo-0.30.2-1
or
Updated: foo-0.30.2-1

Version 0.30.2-1 of "foo" has been uploaded. (a couple of lines about what "foo" is) (short changelog of important features or fixes; big emphasis for security fixes) *** CYGWIN-ANNOUNCE UNSUBSCRIBE INFO *** If you want to unsubscribe from the cygwin-announce mailing list, look at the "List-Unsubscribe: " tag in the email header of this message. Send email to the address specified there. It will be in the format: cygwin-announce-unsubscribe-you=yourdomain.com <at> cygwin.com If you need more information on unsubscribing, start reading here: https://sourceware.org/lists.html#unsubscribe-simple Please read *all* of the information on unsubscribing that is available starting at this URL.