diff --git a/docs/index.rst b/docs/index.rst
index 8a32608..29b25d5 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -11,6 +11,7 @@
    implementing-tests
    design
    change-log
+   license
 
 --------------
 
diff --git a/docs/license.rst b/docs/license.rst
new file mode 100644
index 0000000..46124fc
--- /dev/null
+++ b/docs/license.rst
@@ -0,0 +1,68 @@
+License
+=======
+
+The software is provided under a BSD-3-Clause `license`_. Contributions to this
+project are accepted under the same license with developer sign-off as
+described in the `Contributing Guidelines`_.
+
+::
+
+    Copyright (c) <year> <owner>. All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    -  Redistributions of source code must retain the above copyright notice,
+    this list of conditions and the following disclaimer.
+
+    -  Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+    -  Neither the name of the copyright holder nor the names of its
+    contributors may be used to endorse or promote products derived from this
+    software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+
+SPDX Identifiers
+----------------
+
+Individual files contain the following tag instead of the full license text.
+
+::
+
+    SPDX-License-Identifier:    BSD-3-Clause
+
+This enables machine processing of license information based on the SPDX
+License Identifiers that are here available: http://spdx.org/licenses/
+
+Other Projects
+--------------
+
+This project contains code from other projects as listed below. The original
+license text is included in those source files.
+
+-  The libc source code is derived from `FreeBSD`_ and `SCC`_. FreeBSD uses
+   various BSD licenses, including BSD-3-Clause and BSD-2-Clause. The SCC code
+   is used under the BSD-3-Clause license with the author's permission.
+
+-  The `LLVM compiler-rt`_ source code is disjunctively dual licensed
+   (NCSA OR MIT). It is used by this project under the terms of the NCSA
+   license (also known as the University of Illinois/NCSA Open Source License),
+   which is a permissive license compatible with BSD-3-Clause. Any
+   contributions to this code must be made under the terms of both licenses.
+
+.. _FreeBSD: http://www.freebsd.org
+.. _SCC: http://www.simple-cc.org/
+.. _LLVM compiler-rt: https://compiler-rt.llvm.org/
diff --git a/license.rst b/license.rst
index 3c87311..3ec3b74 100644
--- a/license.rst
+++ b/license.rst
@@ -1,38 +1 @@
-Copyright (c) <year> <owner>. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
--  Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
-
--  Redistributions in binary form must reproduce the above copyright notice, this
-   list of conditions and the following disclaimer in the documentation and/or
-   other materials provided with the distribution.
-
--  Neither the name of the copyright holder nor the names of its contributors
-   may be used to endorse or promote products derived from this software without
-   specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
---------------
-
-Note:
-Individual files contain the following tag instead of the full license text.
-
-::
-
-    SPDX-License-Identifier:    BSD-3-Clause
-
-This enables machine processing of license information based on the SPDX
-License Identifiers that are here available: http://spdx.org/licenses/
+See docs/license.rst