[Distutils] problem finding dll with C extension
mike cantor
mcantor at stanford.edu
Sat Dec 17 01:31:41 CET 2005
Another piece of information. The error message I get ("ImportError: DLL
load failed: The specified module could not be found") is different that
the error message I get if I try to import a non-existent module (namely,
"ImportError: No module named Foo"). So somewhere within the module a DLL
is failing to load. Any ideas????
At 12:44 PM 12/16/2005, mike cantor wrote:
>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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