fatal error: 'freetype/fterrors.h' file not found when building PIL on Mac OS X

[hustcalm]

Under the instructions at:

curl -O -L http://effbot.org/media/downloads/Imaging-1.1.7.tar.gz
tar zxvf Imaging-1.1.7.tar.gz
cd Imaging-1.1.7
python setup.py build --force
sudo python setup.py install

Got fatal error: 'freetype/fterrors.h' file not found when running python setup.py build --force.

Solutions:

ln -s /usr/local/include/freetype2 /usr/local/include/freetype