Cython dynamic library problem

bearophileHUGS at lycos.com bearophileHUGS at lycos.com
Thu Sep 18 19:04:37 CEST 2008


Rob Wolfe:
> # setup.py
> from distutils.core import setup
> from distutils.extension import Extension
> from Cython.Distutils import build_ext as build_pyx
>
> setup(name = 'pyx_test',
>       ext_modules=[Extension('pyx_test', ['test_cython.pyx'])],
>       cmdclass = { 'build_ext': build_pyx })
>
> $ python2.5 setup.py build_ext -i
> running build_ext
> cythoning test_cython.pyx to test_cython.c
> building 'pyx_test' extension
> creating build/temp.linux-i686-2.5
> gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.5 -c test_cython.c -o build/temp.linux-i686-2.5/test_cython.o
> test_cython.c:86: warning: function declaration isn’t a prototype
> test_cython.c:241: warning: function declaration isn’t a prototype
> test_cython.c:59: warning: ‘__pyx_skip_dispatch’ defined but not used
> gcc -pthread -shared -Wl,-O1 build/temp.linux-i686-2.5/test_cython.o -o pyx_test.so
> $ python2.5 test_cython.py
> 0
> 100

With some intelligence added to Cython, probably there are ways to
reduce all this, and most of the times avoid any setup.py module too.

Bye,
bearophile



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