Copyright 2009-2012 Google Inc. This is the the Crack Executor - it runs programs written in the Crack scripting language. Crack is a language similar to C/C++/Java that compiles directly from a script to machine code. See doc/license/MPL-2.0.txt for the license. The bulk of this code is under the Mozilla Public License, version 2.0. More formally: This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. The following files are not released under the MPL: These files can be freely distributed as long as their copyright notices remain intact: m4/libtool.m4 m4/ltoptions.m4 m4/ltsugar.m4 ./m4/iconv.m4 ./m4/ltversion.m4 ./m4/lt~obsolete.m4 These files are released under the GPL with the special exception that code generated by them and used to create a configure script may be distributed without limitations: ./m4/ax_path_lib_pcre.m4 These files are under LGPL v2: ./m4/gtk-2.0.m4 ./m4/alsa.m4 ./m4/sdl.m4 ./cmake/modules/FindLLVM.cmake These files are released under the Illinois Open Source License: ./runtime/BorrowedExceptions.cc portions of builder/llvm/Native.cc These files are released under the Apache license: ./opt/xml.rl lib/crack/xml.crk These files are released under the Ruby license: ./opt/json.rl These files are released under the BSD license: ./cmake/modules/FindXS.cmake ./cmake/modules/MacroOptionalFindPackage.cmake ./cmake/modules/FindCWD.cmake ./cmake/modules/MacroLogFeature.cmake ./cmake/modules/FindIconv.cmake ./cmake/modules/FindPCRE.cmake ./cmake/modules/FindSpug.cmake ./lib/crack/hash/sha1.crk These files are under their own license which requires only that copyright/licecnsing remain intact and (in the case of some of them) that modifications be noted: builder/util/md5.c benchmarks/test_fankuch_language_game.crk These files are under the MIT license. opt/_cairosdl.crk opt/cairosdl.c opt/cairosdl.h See the doc/license directory for copies of all of the special licenses. We believe that the crack binaries and runtime libraries are not encumbered by the licensing terms of these files because in all cases either: 1) they are not source code for crack generated binaries or 2) They are released under a more permissive license than the MPL 2.0 If you believe that we are in error and that the licensing terms of one or more of these files does limit the permissions given by MPL 2.0, please contact mmuller@enduden.com.