[Image-SIG] Building PIL with Windows NT, Python 1.6

[Jonathan M. Gilligan]

I have succeeded in building PIL under Windows and Python 1.6 with VC++ 6.0 
SP4. Since others may need to do this, I provide an outline of what I did:

Make a new Visual C++ workspace in the Imaging-1.1 directory. Put two 
projects in it: "_imaging" and "_imagingtk". Both of these projects should 
be "Win32 DLL" (NOT MFC DLL) projects. Tell the AppWizard to make them 
empty projects. To "_imaging" add all *.c *.h in Imaging-1.1 and 
Imaging-1.1\libImaging except _imagingtk.c, tkImaging.c, Except.c, and 
coretest.c. To "_imagingtk" add "_imagingtk.c" and "tkImaging.c".

Set the output (in the Project/Settings/Link property page) to _imaging.dll 
and _imagingtk.dll. Case is important. Python matches case on .dll file names.

Add appropriate Include and Lib directories to your C++ preprocessor and 
linker search path settings for python16, jpeg, zlib, tcl, and tk. Add 
python16.lib, tcl83.lib, tk83.lib, jpeg.lib, zlib.lib (use the fully 
qualified path to the zlib.lib from your zlib distribution so the linker 
will not get confused by the zlib.lib in python, which is for zlib.pyd and 
will not work) to the Link Input "Object/Library modules" list.

Set the C++ language options to use the "Multithreaded DLL" for the runtime 
C/C++ library.

Edit the PIL source code to delete or comment out all lines defining or 
undefining INT32 and UINT32. These are typedef'ed in standard Platform SDK 
and  Visual C++ header files <basetsd.h> and combining typedefs and 
preprocessor definitions for the same symbol will produce beaucoup compiler 
errors. (Note to /F: If you can do it for a future release, please rename 
your preprocessor definitions to something like PIL_INT32 etc.)

Now build with Visual C++. After successfully building, copy _imaging.dll 
and _imagingtk.dll to your python DLLs directory. Then add the following 
key to your registry:

HKLM\Software\Python\PythonCore\1.6\PythonPath\Imaging 1.1

In this key add a default value (i.e., blank name for the value) of type 
REG_SZ and contents "D:\Program Files\Python\Imaging-1.1\PIL" or wherever 
your PIL *.py files are.

Now PIL should work.

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Jonathan M. Gilligan                     <jonathan.gilligan@vanderbilt.edu>