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 [email protected].