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cosmopolitan libc

your build-anywhere run-anywhere c library

Cosmopolitan is released under the ISC license, which is a simplification of the MIT/BSD licenses made possible by the universal adoption of the Berne Convention.

Copyright 2020 Justine Alexandra Roberts Tunney

Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.

Cosmopolitan vendors third party components, which are licensed BSD, MIT, or Apache 2.0. There is a notice at the top of each source file documenting such licenses.

Furthermore, Cosmopolitan automates notice embeddings using the GNU Assembler .ident directive. This means that by viewing the content of linked binaries, you can see the transitive closure of notices that apply to your work.

It also automates compliance. Notice licenses like ISC/MIT/BSD require that you distribute the notice along with your work. Since the linker automatically embeds them you can have sexy single-file distributables that are legally prim-and-proper with hardly any effort at all.