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Xdelta

Xdelta version 3 is a C library and command-line tool for delta compression using VCDIFF/RFC 3284 streams.

License

This repository contains branches of Xdelta 3.x that were re-licensed by the original author under the Apache Public License version 2.0, namely:

  • release3_0_apl Change to APL based on 3.0.11 sources
  • release3_1_apl Merges release3_0_apl with 3.1.0 sources

The original GPL licensed Xdelta lives at http://github.com/jmacd/xdelta-gpl.

Documentation

See the command-line usage. See wiki directory.

How to build

  • Clone repo
  • cd into repo folder
  • mkdir build
  • cd build
  • cmake -DCMAKE_BUILD_TYPE=Release ..
  • If on linux, run make
  • If on Windows, open the generated solution file with Visual Studio e build.

The basic command cmake -DCMAKE_BUILD_TYPE=Release .. will build xdelta3 as a static library, with no secondary compression support and only the decoder code. So the bare minimum. Here is an example building with all features included:

cmake -DXD3_ENABLE_SECONDARY_COMPRESSION=ON -DXD3_ENABLE_ENCODER=ON -DXD3_ENABLE_VCDIFF_TOOLS=ON -DXD3_ENABLE_LZMA=on -DCMAKE_BUILD_TYPE=Release ..

You can additionally specify -DXD3_BUILD_AS_EXE=ON to build an executable instead of a static libray.

Note: for lzma support, liblzma dev package must be installed in your system.