README.md

Andiff

Andiff is another version of bsdiff application focused on performance. Original application can be found here.

Prerequisites

• C++11 compiler - tested with GCC 4.8, GCC 5.3 and Clang 3.8
• bzip2 library: http://www.bzip.org/
• CMake 3.1: https://cmake.org/
• libdivsufsort: https://github.com/y-256/libdivsufsort

Building

Ubuntu 14.04:

sudo apt-get install build-essential libbz2-dev

Note: For Ubuntu 14.04 required CMake is not available in Ubuntu repository and should be downloaded from CMake site.

Fedora 22:

sudo dnf install gcc-c++ bzip2-libs cmake

libdivsufsort

Note: It is strongly recommended to compile libdivsufsort with OpenMP support.

cmake -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DUSE_OPENMP:BOOL=ON \
-DBUILD_DIVSUFSORT64:BOOL=ON -DBUILD_SHARED_LIBS:BOOL=OFF \
-DCMAKE_INSTALL_PREFIX:PATH=${LIBDIVSUFSORT_INSTALL_PREFIX} ../libdivsufsort/
make
make install

andiff

cmake -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release \
-DLIBDIVSUFSORT_PREFIX:PATH=${LIBDIVSUFSORT_INSTALL_PREFIX} ../andiff
make

CMake compilation options:

• ENABLE_ADDRESS_SANITIZER - Enable Address Sanitizer; Default: OFF
• ENABLE_THREAD_SANITIZER - Enable Thread Sanitizer; Default: OFF
• GENERATE_DWARF - Generate DWARF debug symbols with Debug build; Default: OFF
• ENABLE_NATIVE - Add -march=native to compiler for Release build; Default:ON

Warning: If you want to use andiff on different machine than was compiler disable this option. Other wise you may end with Illegal instruction exception.

Usage

Generating patch:

./andiff oldfile newfile patchfile

Applying patch:

./anpatch odlfile newfile patchfile