This document applies to TruffleRuby as built and distributed as the Native Standalone and JVM Standalone distributions, which are the only supported ways to use TruffleRuby.
TruffleRuby is copyright (c) 2013-2024 Oracle and/or its affiliates, and is made available to you under the terms of any one of the following three licenses:
- Eclipse Public License version 2.0, or
- GNU General Public License version 2, or
- GNU Lesser General Public License version 2.1.
See epl-2.0.txt
, gpl-2.txt
, lgpl-2.1.txt
.
The standard implementation of Ruby is MRI. TruffleRuby contains code from MRI version 3.3.5, including:
- the standard library in
lib/mri
, - Ruby C extension API in
lib/cext/include
andsrc/main/c/cext
, - C extensions in
src/main/c/{bigdecimal,date,etc,io-console,nkf,openssl,psych,rbconfig-sizeof,ripper,syslog,zlib}
MRI is copyright Yukihiro Matsumoto. It is made available under the terms of the
2-clause BSD licence ruby-bsdl.txt
, or a custom licence ruby-licence.txt
.
MRI itself includes some third-party code that we have then included. This includes, but isn't limited to:
The general-purpose hash table library src/main/c/cext/st.c
and
lib/cext/include/ruby/st.h
was written originally be Peter Moore and is
public domain.
lib/cext/include/ccan/{build_assert,check_type,container_of,str}
are all
utilities from CCAN and are public domain or available under the terms of the
CC0 public domain dedication, see ccan-cc0.txt
.
lib/cext/include/ccan/list
is a utility from CCAN and is available under the
terms of 'BSD-MIT', see ccan-bsd-mit.txt
. Despite the filename 'BSD-MIT' this
is the conventional MIT licence.
RDoc Darkfish theme fonts under lib/mri/rdoc/generator/template/darkfish/
are
available under the terms of the SIL Open Font License 1.1, see ofl.txt
.
The header file lib/cext/include/ruby/onigmo.h
is part of Onigmo, available
under the same 2-clause BSD licence as Ruby.
RubyGems, in lib/mri/rubygems
is available under the same custom licence as
MRI, see ruby-licence.txt
, or the MIT licence, see mit.txt
.
The C implementation of YAML, src/main/c/psych/yaml
is available under the
MIT licence, see mit.txt
.
TruffleRuby contains code from JRuby 9.4.4.0, including Java implementation code, build system, shell script launchers, standard library modified from MRI, and so on.
Where original files had JRuby licence headers we have copied them over. In general this code is available under any of these licences:
- Eclipse Public License version 2.0, or
- GNU General Public License version 2, or
- GNU Lesser General Public License version 2.1.
See epl-2.0.txt
, gpl-2.txt
, lgpl-2.1.txt
.
Some libraries that were spun out of JRuby, such as ByteList, have been incorporated into our source code. These were under the same copyright and licence as JRuby in the first place, so we have considered them part of JRuby.
For historical information from JRuby, see jruby-copying.txt
, but this will
now be out of date.
TruffleRuby contains code from Rubinius 2.11, including core library
implementation in src/main/ruby/truffleruby/core
. This is in some cases
copyright 2011 Evan Phoenix, and in other cases copyright 2007-2015 Evan Phoenix
and contributors, and released under the 3-clause BSD license. We have included
licence headers in these files which weren't in the original ones.
Some parts of the TruffleRuby Java code (such as the implementation of Rubinius primitives) are derived from Rubinius C++ code which is copyright 2007-2015, Evan Phoenix and contributors, and released under the 3-clause BSD license.
Some parts of the Ruby implementations of the standard library in lib/truffle
are copyright 2013 Brian Shirai and are licensed under the 3-clause BSD license.
In some cases this code is just code from MRI, and covered by their licence. In
some cases we have modified this code.
This list is from bundled_gems and grep licenses lib/gems/specifications/*.gemspec
.
Versions as used in MRI unless otherwise specified.
debug is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
matrix is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
minitest is copyright Ryan Davis and is available under an MIT licence (see mit.txt
).
These 4 bundled gems are under the same copyright and licence as MRI (see ruby-bsdl.txt
).
power_assert is copyright Kazuki Tsujimoto and is available under the same licence as MRI (see ruby-bsdl.txt
).
prime is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
racc is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
Rake is copyright Jim Weirich and is available under an MIT licence (see mit.txt
).
rbs is copyright Soutaro Matsumoto and is available under the same licence as MRI (see ruby-bsdl.txt
).
rexml is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
rss is under the same copyright and licence as MRI (see ruby-bsdl.txt
).
test-unit is copyright Sutou Kouhei, Ryan Davis, and Nathaniel Talbott
and is available under the same licence as MRI (see ruby-bsdl.txt
).
typeprof is copyright Yusuke Endoh and is available under an MIT licence (see mit.txt
).
The json gem is available under the same licence as MRI (see ruby-bsdl.txt
).
It's part of the standard library, not a bundled gem. RDoc is copyright
Dave Thomas and Eric Hodel and is available under the terms of the GPL 2 (see
gpl-2.txt
), or the same custom licence as MRI (see ruby-licence.txt
). Some
other files in RDoc have different, but compatible, licences detailed in the
files.
TruffleRuby includes parts of the FFI gem (version as described in lib/truffle/ffi/version.rb).
The FFI gem is copyright 2008-2016, Ruby FFI project contributors, and covered by the three-clause BSD licence (see ffi.txt
).
TruffleRuby uses the Prism Ruby parser
(version as described in src/main/c/yarp/include/prism/version.h),
copyright Shopify Inc. and is available under an MIT licence (see src/main/c/yarp/LICENSE.md
).
TruffleRuby has Java dependencies on these modules, which are then included in the distribution:
TruffleRuby uses JOni, version as described in mx.truffleruby/suite.py.
JOni is copyright its authors and is released under an MIT licence (see mit.txt
).
TruffleRuby uses JCodings, version as described in Truffle's suite.py (select the correct branch/tag for finding the version used in a release).
JCodings is copyright its authors and is released under an MIT licence (see mit.txt
).
lib/patches
contains patches to gems that are automatically applied when the
gems are loaded, and contain third party code from those gems, with permissive
licenses. We've added the licenses to the individual files.
lib/patches/stdlib
patches code in the standard library.
We do not distribute MSpec or the Ruby Specs, but they are both copyright 2008
Engine Yard and are released under an MIT licence (see mit.txt
).
We do not distribute the FFI Specs, but they are copyright 2008-2014
Ruby-FFI contributors and are released under an MIT licence (see mit.txt
).
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