ExternalVendorCode/ZeroTierOne
1
0
Fork 0
mirror of https://github.com/zerotier/ZeroTierOne.git synced 2025-02-21 02:01:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Include LZ4 README and LICENSE.

Browse Source
This commit is contained in:
Adam Ierymenko 2017-01-19 14:48:40 -08:00
parent a90f2249e8
commit ba158d8dc6
2 changed files with 97 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
ext/lz4/LICENSE Normal file
View File

@ -0,0 +1,24 @@
LZ4 Library
Copyright (c) 2011-2016, Yann Collet
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

73
ext/lz4/README.md Normal file
View File

@ -0,0 +1,73 @@
LZ4 - Library Files
================================
The directory contains many files, but depending on project's objectives,
not all of them are necessary.
#### Minimal LZ4 build
The minimum required is **`lz4.c`** and **`lz4.h`**,
which will provide the fast compression and decompression algorithm.
#### The High Compression variant of LZ4
For more compression at the cost of compression speed,
the High Compression variant **lz4hc** is available.
It's necessary to add **`lz4hc.c`** and **`lz4hc.h`**.
The variant still depends on regular `lz4` source files.
In particular, the decompression is still provided by `lz4.c`.
#### Compatibility issues
In order to produce files or streams compatible with `lz4` command line utility,
it's necessary to encode lz4-compressed blocks using the [official interoperable frame format].
This format is generated and decoded automatically by the **lz4frame** library.
In order to work properly, lz4frame needs lz4 and lz4hc, and also **xxhash**,
which provides error detection.
(_Advanced stuff_ : It's possible to hide xxhash symbols into a local namespace.
This is what `liblz4` does, to avoid symbol duplication
in case a user program would link to several libraries containing xxhash symbols.)
#### Advanced API
A more complex `lz4frame_static.h` is also provided.
It contains definitions which are not guaranteed to remain stable within future versions.
It must be used with static linking ***only***.
#### Using MinGW+MSYS to create DLL
DLL can be created using MinGW+MSYS with the `make liblz4` command.
This command creates `dll\liblz4.dll` and the import library `dll\liblz4.lib`.
The import library is only required with Visual C++.
The header files `lz4.h`, `lz4hc.h`, `lz4frame.h` and the dynamic library
`dll\liblz4.dll` are required to compile a project using gcc/MinGW.
The dynamic library has to be added to linking options.
It means that if a project that uses LZ4 consists of a single `test-dll.c`
file it should be linked with `dll\liblz4.dll`. For example:
```
gcc $(CFLAGS) -Iinclude/ test-dll.c -o test-dll dll\liblz4.dll
```
The compiled executable will require LZ4 DLL which is available at `dll\liblz4.dll`.
#### Miscellaneous
Other files present in the directory are not source code. There are :
- LICENSE : contains the BSD license text
- Makefile : script to compile or install lz4 library (static or dynamic)
- liblz4.pc.in : for pkg-config (make install)
- README.md : this file
[official interoperable frame format]: ../doc/lz4_Frame_format.md
#### License
All source material within __lib__ directory are BSD 2-Clause licensed.
See [LICENSE](LICENSE) for details.
The license is also repeated at the top of each source file.