Third Party Libraries
Revision as of 12:51, 29 October 2007 by Tofu Linden (talk | contribs)
| Library | Version | Description | GPL-Compatible? | Covered under FLOSS exception? |
|---|---|---|---|---|
| Apache Portable Runtime | 1.2.8 | 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. | No, Apache 2.0 license | Yes |
| Boost | 1.32.0 | A set of portable C++ libraries which provide a wide set of functionality. Used primarily for tokenization. | Yes, BSDish | |
| c-ares | 1.3.2 | Performs DNS requests and name resolves asynchronously. Used with libcurl to keep all HTTP operations async. | Yes, BSDish | |
| CG | ?? | cg controls some visual effects. - NOT USED BY THE NORMAL CLIENT. | No, permissive license but forbids reverse engineering. | No |
| ELFIO | 1.0.3 | Enhanced stacktrace information on the Linux client. | Yes, LGPL | |
| Expat | 1.95.8 | XML parser. | Yes, MIT | |
| FMOD | 3.75 | Audio engine and mp3 stream decoder | No, proprietary | No |
| FreeType | 2.1.5 | Font engine. | Yes, dual licensed BSD/Advertising + GPL | |
| Glib | 2.0.7 | ?? | Yes, LGPL | |
| GTK+ | 2.0.9 | 'Native' UI components on the Linux client. | Yes, LGPL | |
| jpeglib | 6b | JPEG decoder library. | Yes, BSD | |
| KDU | 5.2.1 | Kakadu (KDU) JPEG-2000 decoder library. | No, Proprietary | |
| libcurl | 7.16.0 | Handles moving data across the net in many different protocols. Used to GET/POST/PUT/DELETE web resources. | Yes, MIT | |
| libpng | 1.2.18 | PNG image library. | BSD-like | |
| libuuid | ?? | Generates UUIDs under Linux. Originally a part of the ext2fs filesystem. Also see lluuid.cpp for all platforms. | Yes, LGPL | |
| llMozLib | 1.8.0.9 | llMozLib handles rendering HTML in the viewer via an embedded Gecko (Mozilla) engine. | Yes, MPL/GPL/LGPL Tri-license | |
| Mesa | 6.2.1 | Provides the required OpenGL headers under Linux. | Yes | |
| OGG | 1.0.3 | Audio control. | Yes, BSDish | |
| OpenGL | GLX | 3D Graphics rendering engine. | No (see XFree86 License FAQ) | |
| OpenJPEG | 1.0 | An open-source JPEG-2000 library; a slower alternative to Kadaku. Used in the open source release | Yes, however one must beware of patents. | |
| OpenSSL | 0.9.7c | Provides encryption for sensitive actions such as user login | No, advertising clauses. | Yes |
| Quicktime | 7.13 | Used to play in-world video clips on a prim. See Movie_System | No, Proprietary | No |
| libresolv / libllresolv | 9.4.1 | Very soon to be obsolete. Linux only - libllresolv is simply a rebuild of the system libresolv.so as the latter is very often broken in various ways on Linux. Building libllresolv. | Yes, BSD | |
| SDL | 1.2.7 | The Simple DirectMedia Layer libraries are used for handling input and basic window/GL setup on the Linux client. | Yes | |
| Smartheap | ?? | Memory allocation (Windows only malloc() replacement) | No, Proprietary, but entirely optional (easy to comment out) | No |
| TUT | 2006-06-22 | Unit test framework based on the use of c++ meta template programming. Used to test LL libraries. | Yes, BSD | |
| Vorbis | 1.1.2 | Audio control. | Yes | |
| xmlrpc-epi | 0.51 | Controls the XML-RPC protocol. | Yes, BSD | |
| zlib | 1.2.1 | zlib is a lossless data-compression library which is used for a variety of network i/o and file compression. | Yes, MIT-like |
Redistribution
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.
Windows
These are the files that need to be shipped with the Windows version
Runtime
Microsoft components. It's not yet know whether they're redistributable.
- dbghelp.dll: Redistributable
- msvcp71.dll: C Runtime Library, redistributable
- msvcr71.dll: C Runtime Library, Redistributable
FMOD
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.
Mozilla
The Gecko engine is MPL/GPL/LGPL licensed, which makes it redistributable.
- app_settings/mozilla
- freebl3.dll
- gksvggdiplus.dll
- js3250.dll
- nspr4.dll
- nss3.dll
- nssckbi.dll
- plc4.dll,
- plds4.dll
- smime3.dll
- softokn3.dll
- ssl3.dll
- xpcom.dll
- xul.dll
Kakadu
JPEG2000 library. Not redistributable. OpenJPEG is an alternative library that is redistributable
- llkdu.dll
OpenSSL
SSL library. Redistributable.
- libeay32.dll
- ssleay32.dll
Vivox
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.
Unknown Libraries
The purpose and licensing of these files is not known:
- tntk.dll: Probably Vivox related