MXE is licensed under the MIT Licence. The makefiles and utilities under
`plugins/`, `src/`, and `tools/` all share this licence.

> Copyright (c) 2007-2016
>
>   * Volker Diels-Grabsch
>   * Mark Brand
>   * Tony Theodore
>   * Martin Gerhardy
>   * Tiancheng "Timothy" Gu
>   * Boris Nagaev
>   * ... and many other [contributors][contributors]
>
> (contact via the [project mailing list][mailing-list] or
> [issue tracker][issue-tracker])
>
> Permission is hereby granted, free of charge, to any person obtaining a copy
> of this software and associated documentation files (the "Software"), to deal
> in the Software without restriction, including without limitation the rights
> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> copies of the Software, and to permit persons to whom the Software is
> furnished to do so, subject to the following conditions:
>
> The above copyright notice and this permission notice shall be included in all
> copies or substantial portions of the Software.
>
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> SOFTWARE.

MXE distributes code from the following projects in the `ext/` directory:

- [GNU config.guess][config.guess] [GPL3+ with Autoconf exception]
- [GNU Make Standard Library][gmsl] [BSD 3-clause]

The [packages][packages] downloaded by MXE (ending up in `pkg/`) each
have their own licence(s). Please see the individual source trees and/or
websites for further details.

[contributors]: https://github.com/mxe/mxe/graphs/contributors
[mailing-list]: https://lists.nongnu.org/mailman/listinfo/mingw-cross-env-list
[issue-tracker]: https://github.com/mxe/mxe/issues
[config.guess]: https://github.com/mxe/mxe/blob/master/ext/config.guess#L3-L27
[gmsl]: https://github.com/mxe/mxe/blob/master/ext/gmsl#L8-L40
[packages]: http://mxe.cc/#packages