HACKING

How to Develop
==============

1. Install development tools
  * CentOS 7
    * using Python Imaging Library (PIL)
    * using Pure Python PNG
  * Mac OS X 10.10 Yosemite
2. Activate virtualenv
  * using Python Imaging Library (PIL)
  * using Pure Python PNG


Install development tools
-------------------------

### CentOS 7

    $ yum -y install python-virtualenv

#### using Python Imaging Library (PIL)

    $ yum -y install libjpeg-turbo libjpeg-turbo-devel libpng libpng-devel
    $ yum -y install gcc

#### using Pure Python PNG (too slow, but portable)
nothing to do.

### Mac OS X 10.10 Yosemite

    $ mkdir -p ~/usr/local/
    $ vi ~/.bash_profile
    PATH="~/usr/local/bin:${PATH}"
    export PATH
    PYTHONPATH="~/usr/local/lib/python2.7/site-packages"
    export PYTHONPATH

    $ . ~/.bash_profile
    $ easy_install --prefix ~/usr/local pip-7.1.2.tar.gz
    $ easy_install --prefix ~/usr/local virtualenv-13.1.2.tar.gz


Activate virtualenv
-------------------

### using Python Imaging Library (PIL)

    $ . tools/install_venv

### using Pure Python PNG

    $ . tools/install_venv_pymaging