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Erlang/OTP, with DTrace patches and other experiments & bugfixing. See README text below.
Erlang C C++ Java Emacs Lisp Shell Other
Pull request Compare This branch is 80 commits ahead, 16682 commits behind erlang:maint.
Latest commit d0564f6 @bjorng bjorng Update preloaded modules
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bin The R13B03 release.
bootstrap Update primary bootstrap
erts Update preloaded modules
lib Merge branch 'bw/tv-render-fix' into pu
make emd2exml: Do not auto-import error/2
plt The R13B03 release.
system Correct leading whitespace in C port tutorial
xcomp OTP-8541 Add erl-xcomp-mips-linux.conf
.gitattributes Stop including in .gitignore files in the source tar files
.gitignore Merge branch 'bw/gitignore' into pu
.mailmap Add .mailmap file
AUTHORS The R13B03 release.
EPLICENCE The R13B03 release. OTP-8449 Documentation improvements. Doc update to latest dependencies & how to compile with free VS2008 E… Rewrite ethread library Merge branch 'bjorn/remove-clearcase-support' into dev
README.bootstrap Clean up bootstrap targets and documentation OTP-8449 Documentation improvements. OTP-8512 Add Erlangish MarkDown to Erlangish XML support
TAR.include OTP-8512 Add Erlangish MarkDown to Erlangish XML support
aclocal.m4 OTP-8323 Cross compilation improvements and other build system Fix SSL build failure when building in minimal source tree OTP-8323 Cross compilation improvements and other build system
otp_build Clean up bootstrap targets and documentation
prebuild.delete Regenerate bootstrap/{erl,erlc} when switching target
prebuild.skip OTP-8323 Cross compilation improvements and other build system


Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of its uses are in telecom, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance.

OTP is set of Erlang libraries and design principles providing middle-ware to develop these systems. It includes its own distributed database, applications to interface towards other languages, debugging and release handling tools.

More information can be found at

Building and Installing

Information on building and installing Erlang/OTP can be found in the document.

Contributing to Erlang/OTP

Here are the instructions for submitting patches.

In short:

  • We prefer to receive proposed updates via email on the erlang-patches mailing list rather than through a pull request. Pull requests are not practical because we have a strict policy never to merge any untested changes to the development branch (the only exception being obviously correct changes, such as corrections of typos).

  • We merge all proposed updates to the pu (proposed updates) branch, typically within one working day.

  • At least once a day, the contents of the pu branch will be built on several platforms (Linux, Solaris, Mac OS X, Windows, and so on) and automatic test suites will be run. We will email you if any problems are found.

  • If a proposed change builds and passes the tests, it will be reviewed by one or more members of the Erlang/OTP team at Ericsson. The reviewer may suggest improvements that are needed before the change can be accepted and merged.

  • Once or twice a week, a status email called "What's cooking in Erlang/OTP" will be sent to the erlang-patches mailing list.

Copyright and License


Copyright Ericsson AB 2010. All Rights Reserved.

The contents of this file are subject to the Erlang Public License, Version 1.1, (the "License"); you may not use this file except in compliance with the License. You should have received a copy of the Erlang Public License along with this software. If not, it can be retrieved online at

Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License.


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