Dynamically associate a Python extension (.pyd) with another extension

Question

Python extension modules are just dynamic libraries, so I assume that you can dynamically link a Python extension to another. The problem with Windows Python Extensions is the extension .pydinstead .dll, so I can't get distutils to refer to them when I run the installation script. (I don't think this is a problem on UNIX, since Python extensions use the extension .so.)

Suppose I have an extension bar.pydthat I need to associate with foo.pyd. Basically, what I did in setting up the script was:

from distutils.core import setup, Extension

foo = Extension("foo", sources=["foo.c"])
bar = Extension("bar", libraries=["foo"], sources=["bar.c"])
setup(ext_modules=[foo, bar])

This is not working yet. Is it possible? I suppose this is so, but I could not find anything on the Internet. I use MinGW on Windows, but I would like it to work with other MSVC ++ and other systems.

Edit: I previously solved this problem by passing the object file ( foo.o) created when it foowas compiled into a parameter extra_objectsin the extension (this will only work if I defined the prototypes of all the foocharacters in bar):

bar = Extension("bar", sources=["bar.c"], extra_objects=["build/.../foo.o"]

This did not seem to be the right solution, but it worked. I don't understand dynamic linking very well, so this may be the right way to do this. However, this is very bad.

Then I tried passing some explicit gcc arguments to compile the import library:

foo = Extension("foo", sources=["foo.c"], extra_compile_args=["-Wl,--out-implib,foo.lib,--export-all-symbols"])

And then I linked barto the new import library:

bar = Extension("bar", libraries=["foo"], sources=["bar.c"])

, ( , PyTypeObject foo, , , bar. PyTypeObject .).

2: , . , , PyTypeObject . , foo PyTypeOject Foo_Type. foo.h, foo.c, bar.c:

PyTypeObject Foo_Type;

foo.c:

PyTypeObject __declspec(dllexport) Foo_Type;

bar.c:

PyTypeObject __declspec(dllimport) Foo_Type;

. Foo_Type foo, bar, Foo_Type. , , Windows. , __declspec, .

Answer 1

Python . , , , DLL, .

Answer 2

from distutils.core import Extension as cExtension
from pyd.support import setup, Extension

module1 = Extension("x", sources = ['xclass.c'])
module2 = Extension("y", sources = ['hello.d'], build_deimos=True)

setup(
    name = "x",
    version = '1.0',
    description = "eat a taco",
    ext_modules = [
        module1,
        module2
    ]
);

from: http://pyd.readthedocs.io/en/latest/distutils.html