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 Tracker++ cpp version on Linux (arm)
 
 ## install dependencies
-`apt-get install liblog4cpp5-dev libopencv-dev`
 
-## Build 
+- opencv - 3.4.1
+<https://docs.opencv.org/3.4.1/d7/d9f/tutorial_linux_install.html>
+   Run the script `script/install_opencv.sh`, the prefix is `/usr/local`
 
-`make all`
+- log4cpp : logger utils
+- eigen : matrix library of C++
+- scons
+   `apt-get install liblog4cpp5-dev libeigen3-dev scons`
+   
+- boost-python 
+    - `apt-get install libpython-dev python-dev`
+    - build boost with python
+    - `pip install scipy numpy sklearn`
+<https://www.boost.org/doc/libs/1_67_0/libs/python/doc/html/building/installing_boost_python_on_your_.html>
 
-### Run
+As boost has already 
+`sudo ./b2 install link=static cxxflags=-fPIC --with-filesystem --with-test --with-log --with-program_options --with-python`
+
+
+## Build with `scons`
+
+- Run `scons` to build the `src/` and `main`. It will generate a library
+`libtracker.a` and an executable file `main` under current folder.
+
+- Run `scons --all` to build source and `test` file. A executable file `TestMain`,
+which is used to run the unit test, will be generated under `test`
+
+- Run `scons --all -c` to clean.
+
+### Run 
 
 `./main`