Similar to my message of 9-May-2002, but updated with regards to 
python-2.2.3-2, the official rebase-2.2-2 package which was not 
available last May, and the recent tk-8.4 release (tcltk-20030214-1).

To compile PIL on cygwin, you need:
   gcc/binutils
   python-2.2.3-2
   rebase-2.2-2
   tcltk-20030214-1
   ( special: tk-includes-8.4.tar.bz2 ; see below )

1) grabbed the various include files from the naked-tk CVS repo on
    sourceware, and put them into /usr/include/tk/* and 
/usr/include/tk/X11/*.
    You can (temporarily) get them here:
      http://www.neuro.gatech.edu/users/cwilson/cygutils/testing/
        tk-includes-8.4.tar.bz2

2) downloaded the PIL 1.1.4 archive, unpacked it

3) applied the attached patch

4) fixed up some symlinks
   cd  /usr/lib
   ln -s libtk84.a libtk8.4.a
   ln -s libtcl84.a libtcl8.4.a

5) rebased a bunch of DLLs using Jason's rebase tool:

close all cygwin processes, including rxvt windows
start a DOS-box bash shell
run rebaseall -v

6) Followed the instructions to build and install PIL

cd Imaging-1.1.4/libImaging
./configure
make
cd ..
python setup.py build
python setup.py install

7) rebase, but this time including the PIL dll's

first, set things up to 'trick' rebaseall
   cd /
   find /usr/lib/python2.2/site-packages -name "*.dll" > \
     /etc/setup/python-site-packages.lst
   gzip /etc/setup/python-site-packages.lst
then, close all cygwin processes, including rxvt windows
start a DOS-box bash shell
run rebaseall -v

8) ran the self-tests, it worked.  viewer.py also worked...very impressive.

    python selftest.py
    python Scripts/viewer.py <an image file>

9) Also, you might want to install the following files into
     /usr/include/python2.2/Extensions/
      ImConfig.h  ImPlatform.h  Imaging.h