Notice:Make sure you have cmake installed for building! I.How to build? 1. mkdir build 2. cd build 3. cmake .. 4. make will generate [topdir]/build/bin/utet which is a test of the compressor and decompressor the source code of the test is /unit_ests/test.cc II.File structure 1./include All source code relating to compressor/encoder and decomressor/decoder Decoder is in the same file of encoder,ie encoder.h will provide class Encoder and Decoder normal_huff_encoder.h will provide both class NormalHuffEncoder and NormalHuffDecoder 2./utils Helper classes.Right now only /utils/include/buffer.h provide the help of buffered file read write. 3./unit_tests The unit tests and show how to use the compressor and decompressor. Ringht now only test.cc III.Dependence With out setting DEBUG2,DEBUG, int /build cmake -DDEBUG2=off -DDEBUG=off .. cmake .. make We need nothing else. If setting DEBUG,will print log and also running tests. You need to install google test for /unitest/tests.cc I may also in source files using google test in DEBUG mode. If setting DEBUG2 We use this mode to print the huff_tree created in normal huff encodeing. So if you do not care this feature,do not turn it on. This feature will depend on python, boost.python, pygraphviz. So you need to have python installed with shared lib,also install boost.python and pygraphviz. Please see CMakeLists.txt in the top dir, you may need to change the specific include directories and lib link directories. Thanks:) goldenlock