$NetBSD: README,v 1.15 2012/06/14 04:14:36 riz Exp $ Organization of Sources: This directory hierarchy is using an organization that separates source for programs that we have obtained from external third parties (where NetBSD is not the primary maintainer) from the system source. The hierarchy is grouped by license, and then package per license, and is organized as follows: external/ Makefile Descend into the license sub-directories. / Per-license sub-directories. Makefile Descend into the package sub-directories. / Per-package sub-directories. Makefile Build the package. dist/ The third-party source for a given package. bin/ lib/ sbin/ BSD makefiles "reach over" from these into "../dist/". This arrangement allows for packages to be easily disabled or excised as necessary, either on a per-license or per-package basis. The licenses currently used are: apache2 Apache 2.0 license. http://www.opensource.org/licenses/apache2.0.php atheros Atheros License. bsd BSD (or equivalent) licensed software, possibly with the "advertising clause". http://www.opensource.org/licenses/bsd-license.php cddl Common Development and Distribution License (the sun license which is based on the Mozilla Public License version 1.1). http://www.opensource.org/licenses/cddl1.php gpl2 GNU Public License, version 2 (or earlier). http://www.opensource.org/licenses/gpl-2.0.php gpl3 GNU Public License, version 3. http://www.opensource.org/licenses/gpl-3.0.html historical Lucent's old license: http://www.opensource.org/licenses/historical.php ibm-public IBM's public license: http://www.opensource.org/licenses/ibmpl.php intel-fw-eula Intel firmware license with redistribution restricted to OEM. intel-fw-public Intel firmware license permitting redistribution with terms similar to BSD licensed software. intel-public Intel license permitting redistribution with terms similar to BSD licensed software. mit MIT (X11) style license. http://www.opensource.org/licenses/mit-license.php public-domain Non-license for code that has been explicitly put into the Public Domain. realtek RealTek license. zlib Zlib (BSD-like) license. http://www.zlib.net/zlib_license.html If a package has components covered by different licenses (for example, GPL2 and the LGPL), use the subdirectory for the more restrictive license. If a package allows the choice of a license to use, we'll generally use the less restrictive license. If in doubt about where a package should be located, please contact for advice. Migration Strategy: Eventually src/dist (and associated framework in other base source directories) and src/gnu will be migrated to this hierarchy. Maintenance Strategy: The sources under src/external///dist/ are generally a combination of a published distribution plus changes that we submit to the maintainers and that are not yet published by them. Make sure all changes made to the external sources are submitted to the appropriate maintainer, but only after coordinating with the NetBSD maintainers.