[Distutils] problem finding dll with C extension
mike cantor
mcantor at stanford.edu
Fri Dec 16 21:44:54 CET 2005
Hi,
I have just built a C extension. "python setup.py install" successfully
builds the extension and puts the library , PGModule.pyd, in the
Python23\Lib\site-packages folder. However, from within Python, "import
PGModule" yields "ImportError: DLL load failed: The specified module could
not be found"
The setup.py file I am using looks like this:
from distutils.core import setup, Extension
setup(name='PGModule', ext_modules=[ Extension('PGModule',
sources = ['PGfit_DataTypes.c', 'PGModule.c'],
include_dirs=["E:\Program Files\GnuWin32\include","E:\sundials\includes"],
libraries = ["libgsl"],
library_dirs = ["E:\Program Files\GnuWin32\lib"]) ])
A few more clues/oddities: The extension uses the gsl (gnu scientific
library) library. Without the "libraries" and "library_dir" flags, my code
compiles fine but does not link (I get error messages like "in PGModule.o
unidentified reference gsl_set_vector" etc). Other extensions that I
compile from the same directory and using the same setup file, but minus
the library flags, build fine and are importable and usable from within
Python. When I look in the site-packages folder, PGModule.pyd is right
there along with other modules (e.g. PGFit.pyd), yet "import PGModule" from
a python shell yields the aforementioned error while "import PGFit"
executes successfully.
Any ideas?
Thanks a ton,
-mike
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