Python PIL : IOError: decoder jpeg not available

The first thing I check when I got this error was to check if libjpeg was installed. 
Lets try this

1. sudo apt-get install libjpeg libjpeg-dev
2. sudo apt-get install libfreetype6 libfreetype6-dev

download jpeg source

1. tar -xzvf jpegsrc.v8c.tar.gz
2. cd jpeg-6b/
3. ./configure
4. make
5. sudo make install

So download Python Imaging Library 1.1.7 Source Kit (all platforms)

The after run the setup.py install, check if the support was ok

1. --------------------------------------------------------------------
2. *** TKINTER support not available (Tcl/Tk 8.5 libraries needed)
3. --- JPEG support available
4. --- ZLIB (PNG/ZIP) support available
5. *** FREETYPE2 support not available
6. --- LITTLECMS support available
7. --------------------------------------------------------------------

If not, in setup.py in PIL I had to change the path of :

1. JPEG_ROOT = None
2. ZLIB_ROOT = None

to

1. JPEG_ROOT = libinclude("/usr/")
2. ZLIB_ROOT = libinclude("/usr/")