[Pythonmac-SIG] PIL/JPEG trouble

[Dinu Gherman]

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Hi, I've got some trouble on OS X telling PIL where to find the JPEG
library. This results in "IOError: decoder jpeg not available" errors.

I've installed JIG's library libjpeg.a into /usr/local/lib and its
tools into /usr/local/bin (wrjpgcom, rdjpgcom, jpegtran, djpeg, cjpeg).
I've also tried a configure pass with --with-jpeg=/usr/local/lib but
all in vain.

I've attached a sample installation script which should automatically
fetch zlib, jpeg and pil from the net and install them the "canonical"
way... Below I've also pasted the results of running PIL's
MiniTest/test.py.

Does anybody have an idea?

Thanks,

Dinu


[localhost:Imaging-1.1.3] dinu% python MiniTest/test.py
*****************************************************************
Failure in example: _info(Image.open("Images/lena.jpg"))
from line #24 of test.testimage
Exception raised:
Traceback (most recent call last):
   File "MiniTest/doctest.py", line 499, in _run_examples_inner
     exec compile(source, "<string>", "single") in globs
   File "<string>", line 1, in ?
   File "MiniTest/test.py", line 12, in _info
     im.load()
   File "PIL/ImageFile.py", line 140, in load
     d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
   File "PIL/Image.py", line 255, in _getdecoder
     raise IOError("decoder %s not available" % decoder_name)
IOError: decoder jpeg not available
*****************************************************************
Failure in example: type(im.im) # internal image attribute
from line #31 of test.testimage
Expected: <type 'None'>
Got: <type 'NoneType'>
1 items had failures:
    2 of  40 in test.testimage
***Test Failed*** 2 failures.
*** 2 tests of 40 failed.



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#! /usr/bin/env python


"""install.py - a funky install script.

Sample usage:

  python install.py zlib jpeg pil
  python install.py pil
"""


import os, string, sys
from os.path import basename, join
from urllib import urlopen




###############################################################################
# Package descriptions
###############################################################################

jpeg = {
    "name":     "JPEG Support for PIL",
    "homepage": "http://www.ijg.org",
    "download": "http://www.ijg.org/files/jpegsrc.v6b.tar.gz",
    "install": """\
tar xfz jpegsrc.v6b.tar.gz
cd jpeg-6b
./configure
make
make test
sudo make install
sudo make install-lib
"""}


zlib = {
    "name":     "Zlib",
    "homepage": "http://www.gzip.org/zlib/",
    "download": "http://www.gzip.org/zlib/zlib-1.1.4.tar.gz",
    "install": """\
tar xfz zlib-1.1.4.tar.gz
cd zlib-1.1.4
./configure
make
sudo make install
"""}


pil = {
    "name":     "PythonWare's PIL 1.1.3",
    "homepage": "http://www.pythonware.com/products/python/index.htm",
    "download": "http://www.pythonware.com/downloads/Imaging-1.1.3.tar.gz",
    "install": """\
tar xfz Imaging-1.1.3.tar.gz
cd Imaging-1.1.3
cd libImaging
./configure
make
cd ..
python setup.py build
sudo python setup.py install
"""}



###############################################################################
# Installation 
###############################################################################

def install(packages):
    dir = os.getcwd()

    for p in packages:
        try:
            p = globals()[p]
        except:
            print "Skipping", p
            continue
            
        # get package details
        name = p['name']
        url = p['download']
        instructions = p['install']

        # download, if needed
        path = join(dir, basename(url))
        if not os.path.exists(path):
            print "Downloading", name
            data = urlopen(url).read()
            open(path, "wb").write(data)

        # install
        print "Installing", name
        open('install.sh', 'w').write(instructions)
        os.system('tcsh -f install.sh')




if __name__ == '__main__':
    packages = sys.argv[1:]    
    install(packages)

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