Third Party Libraries
The following table lists libraries and other third party dependencies used in constructing the Second Life Viewer.
Most of these (all the open source ones) should be available as prebuilds packaged by and for use with Autobuild.
Anywhere that the following disagrees with the autobuild.xml file in the viewer source, that file is correct.
- The license information here is incomplete... I am still verifying and updating the license information.
- --- Oz Linden
To see how we manage changes made for our builds, see Mercurial Vendor Branching.
|"A set of C functions which provide a portable and consistent interface into operating system - or simply widely useful - functionality. We primarily use it for threading and socket i/o. This is actually three packages, apr, apr-util and apr-iconv."
|Performs DNS requests and name resolves asynchronously. Used with libcurl to keep all HTTP operations async.
|A set of portable C++ libraries which provide a wide set of functionality. Used primarily for tokenization.
|Academic Free License version 2.1M
|Berkeley DB library linked to linux viewer.
|Handles moving data across the net in many different protocols. Used to GET/POST/PUT/DELETE web resources.
|linux only dbus-glib headers
|Enhanced stacktrace information on the Linux client.
|Audio engine and mp3 stream decoder
|nVidia NVParse SDK: platform-independent C++ Apple OpenGL helper library
|Google C++ Mocking Framework (or Google Mock for short) is a library for writing and using C++ mock classes.
|"Heap performance and validity checking tools from google. Includes TCMalloc, heap-checker, heap-profiler and cpu-profiler."
|Libraries associated with GTK for gui features. atk: interfaces for accessibility; glib: low-level core functionality for using GTK+ and GNOME; pango: layout/rendering of text w/ emphasis on internationalization.
|JPEG decoder library.
|an implementation of a JSON (http://json.org) reader and writer in C++.
|Kakadu (KDU) JPEG-2000 decoder library.
|talk to kelly
|An open source implementation of the ECMA/ISO ECMA-334 Common Language Infrstructure (CLI) international standard
|PNG image library.
|Generates UUIDs under Linux. Originally a part of the ext2fs filesystem. Also see lluuid.cpp for all platforms.
|llMozLib handles rendering HTML in the viewer via an embedded Gecko (http://www.mozilla.org/developer/ Mozilla) engine.
|(llqtwebkit named branch) 3p-qt (llqtwebkit named branch)
|Provides the required OpenGL headers under Linux.
|Provides joystick driver support (mac and win) for the 3DConnexion SpaceNavigator.
This is not http://3dconnexion.com/service/software-developer.html , but probably should be.
|An open-source JPEG-2000 library; a slower alternative to Kadaku. Used in the open source release
|Provides encryption for sensitive actions such as user login
|Provides 10.4 support for the boost::coroutine library
|Used to play in-world video clips on a prim. See Movie_System
|The Simple DirectMedia Layer libraries are used for handling input and basic window/GL setup on the Linux client.
|This is the Vivox provided executable (renamed SLVoice)
|Unit test framework based on the use of c++ meta template programming. Used to test LL libraries.
|Controls the XML-RPC protocol.
|zlib is a lossless data-compression library which is used for a variety of network i/o and file compression.
- This repository is internal to Linden Lab.
- This library is available under multiple licenses; the license shown is the one under which the Second Life Viewer Project is using it. See sources for details of alternatives.
- This library is available under a license substantially similar to the traditional BSD license. See sources for details.
Some files in the SL installation can't be freely redistributed. This means it's not possible to simply package and offer for download a modified viewer: some files must not be redistributed.
This page documents the licenses and redistribution requirements of various files used by the viewer.
These are the files that need to be shipped with the Windows version
Microsoft components. It's not yet known whether they're redistributable.
- dbghelp.dll: Redistributable
- msvcp71.dll: C++ Runtime Library, redistributable -viewer now using msvcp80.dll when compiled with VC2005
- msvcr71.dll: C Runtime Library, Redistributable -viewer now using msvcr80.dll when compiled with VC2005
Meta font software files
From the Readme.txt
The Meta font software files contained in this folder are the copyrighted property of FSI FontShop International ("FSI") and are licensed by FSI solely for use by Linden Research, Inc. and by residents or users of Second Life in the Second Life environment, subject to the Second Life Terms of Service. These Meta font software files may not be copied by residents or developers of Second Life or used by them for any other purpose whatsoever.
NOTE: These files must be replaced for an true opensource build
FMOD sound library. Free for non-commercial projects. A commercial license will be needed for a commercial viewer.
From the README in the package:
The fmod.dll file may be redistributed without the authors prior permission, and must remain unmodified. The use of dll 'static linking' tools that aim to hide the fmod library are forbidden.
The Gecko engine is MPL/GPL/LGPL licensed, which makes it redistributable.
JPEG2000 library. Not redistributable. OpenJPEG is an alternative library that is redistributable
Starting with Viewer 2.5, llkdu.dll has been phased out. The libkdu.a and kdu.lib are still not redistributable but can be built from the toolkit provided by Kakadu under a license. How to build a viewer with such a library is documented in KDU Implementation.
SSL library. Redistributable.
Vivox is the component that provides the voice functionality.
- SLVoice.exe: Voice daemon. Not redistributable
- SLVoiceAgent: Exact purpose unknown. Not redistributable
- alut.dll: OpenAL, by Creative Labs. Redistributable.
- ortp.dll: oRTP project, LGPL. Redistributable.
- srtp.dll: Secure RTP?
- vivoxsdk.dll: Vivox Communications API. Not redistributable
- wrap_oal.dll: OpenAL32 by Creative Labs. Redistributable.
The purpose and licensing of these files is not known:
- tntk.dll: Probably Vivox related -see Voice/Technical for other info on ViVox files