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libmypaint - MyPaint brush engine library

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This is the brush library used by MyPaint. A number of other painting programs use it too.

License: ISC, see COPYING for details.

Dependencies

On recent Debian-like systems, you can type the following to get started with a standard configuration:

$ sudo apt install build-essential
$ sudo apt install libjson-c-dev libgirepository1.0-dev libglib2.0-dev
$ sudo apt install python2 autotools intltool gettext   # Building from git

Build and install

The traditional setup works just fine.

$ ./autogen.sh    # Only needed when building from git.
$ ./configure
$ make install

Maintainer mode

We don't ship a configure script in our git repository. If you're building from git, you have to kickstart the build environment with:

$ ./autogen.sh

This script generates configure from configure.ac, after running a few checks to make sure your build environment is broadly OK. It also regenerates certain important generated headers if they need it.

Folks building from a release tarball don't need to do this: they will have a configure script from the start.

Configure

$ ./configure
$ ./configure --prefix=/tmp/junk/example

There are several MyPaint-specific options. These can be shown by running

$ ./configure --help

Build

$ make

Once MyPaint is built, you can run the test suite and/or install it.

Test

$ make check

This runs all the unit tests.

Install

$ make install

Uninstall libmypaint with make uninstall.

Contributing

The MyPaint project welcomes and encourages participation by everyone. We want our community to be skilled and diverse, and we want it to be a community that anybody can feel good about joining. No matter who you are or what your background is, we welcome you.

Please note that MyPaint is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

Please see the file CONTRIBUTING.md for details of how you can begin contributing.

Making releases

The distribution release can be generated with:

$ make dist

And it should be checked before public release with:

$ make distcheck

Localization

Contribute translations here: https://hosted.weblate.org/engage/mypaint/.

The list of languages is maintained in po/LINGUAS. Currently this file lists all the languages we have translations for. It can be regenerated with:

$ ls po/*.po | sed 's$^.*po/\([^.]*\).po$\1$' | sort > po/LINGUAS

You can also disable languages by removing them from the list if needed.

A list of files where localizable strings can be found is maintained in po/POTFILES.in.

Strings update

You can update the .po files when translated strings in the code change using:

$ cd po && make update-po

When the results of this are pushed, Weblate translators will see the new strings immediately.

Documentation

Further documentation can be found in the libmypaint wiki: https://github.com/mypaint/libmypaint/wiki.