--- /dev/null
+$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.
+
+ <license>/
+ Per-license sub-directories.
+
+ Makefile
+ Descend into the package sub-directories.
+
+ <package>/
+ 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 <license> 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 <core@NetBSD.org> 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/<license>/<package>/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.