[Image-SIG] setup.py and automaticly detecting freetype2

[Ronald Oussoren]

Hi,

The setup.py in Imageing-1.1.5 tries to autodetect if, and which,  
freetype is installed. This fails to consider the --include-dirs  
command-line option.

I've freetype2 (as well as libjpeg and libtiff) installed in /opt/ 
local, which is not on the default search-path of distutils. Hence I  
built the extensions using::

    python setup.py build_ext --include-dirs=/opt/local/include -- 
library-dirs=/opt/local/lib

This works for the detection of libjpeg and libtiff because that code  
looks at the library path of self.compiler. The freetype  
configuration code also tries to find the freetype2 include-file.  
This only looks at a path that's hardcoded in setup.py, and ignores  
the include-path of self.compiler. IMHO this code should
look at self.compiler.include_dirs instead of just include_dirs  
(setup.py around line 216)

Regards,
     Ronald
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