New submission from dktc <[email protected]>:
I've been trying to find out why I cannot build PIL with JPEG support on PyPy
while this works fine on CPython. The problem was traced to C compiler looking
for static
libraries on PyPy, while being able to properly use dynamic ones on CPython.
Since most devel packages are only distributed with dynamic libs that's a
serious problem.
To reproduce the problem in PIL/setup.py, replace find_library_file function
with this:
def find_library_file(self, library):
print
print "find_library_file: %s" % library
print self.compiler
print self.compiler.library_dirs
print self.compiler.include_dirs
result = self.compiler.find_library_file(self.compiler.library_dirs,
library)
print 'RESULT = %s' % result
print
return self.compiler.find_library_file(self.compiler.library_dirs, library)
Here is the output on PyPy 2.0.2 -
find_library_file: z
<distutils.unixccompiler.UnixCCompiler instance at 0x00002b486c827980>
['/usr/local/lib', '/usr/lib']
['libImaging', '/opt/pypy-2.0.2/include', '/usr/local/include',
'/usr/include', '/opt/pypy-2.0.2/include']
RESULT = /usr/lib/libz.a
find_library_file: jpeg
<distutils.unixccompiler.UnixCCompiler instance at 0x00002b486c827980>
['/usr/local/lib', '/usr/lib']
['libImaging', '/opt/pypy-2.0.2/include', '/usr/local/include',
'/usr/include', '/opt/pypy-2.0.2/include']
RESULT = None
Here is the output on CPython 2.7.3 -
find_library_file: z
<distutils.unixccompiler.UnixCCompiler instance at 0x10c15c20>
['/usr/local/lib', '/opt/pinax0.9a2/lib', '/usr/lib',
'/opt/python2.7.3/lib']
['libImaging', '/opt/pinax0.9a2/include', '/usr/local/include',
'/usr/include', '/opt/python2.7.3/include/python2.7']
RESULT = /usr/lib/libz.so
find_library_file: jpeg
<distutils.unixccompiler.UnixCCompiler instance at 0x10c15c20>
['/usr/local/lib', '/opt/pinax0.9a2/lib', '/usr/lib',
'/opt/python2.7.3/lib']
['libImaging', '/opt/pinax0.9a2/include', '/usr/local/include',
'/usr/include', '/opt/python2.7.3/include/python2.7']
RESULT = /usr/lib/libjpeg.so
Creating fake /usr/lib/libjpeg.a with touch command fools the build, but the
tests later fail, because looks like actual static linking is expected.
Is there a way to fix this?
----------
messages: 5802
nosy: pypy-issue
priority: bug
status: unread
title: PIL: distutils.unixccompiler requires static libraries on PyPy
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PyPy bug tracker <[email protected]>
<https://bugs.pypy.org/issue1506>
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