mingwでのリンクエラーについて

cythonを動かしたいと思って
mingwをインストールしたのですが
そこでつまってしまいました

開発環境はanacondaで、windows10です
python3系で動かせればうれしいです

pythonでcythonのsetup.pyを実行しようとすると

python
python setup.py build_ext --inplace

-------------------------------------------------------
実行結果

running build_ext
skipping 'cythonfn.c' Cython extension (up-to-date)
building 'calculate' extension
C:\MinGW\bin\gcc.exe -mdll -O -Wall -DMS_WIN64 "-IC:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include" "-IC:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include" -c cythonfn.c -o build\temp.win-amd64-3.6\Release\cythonfn.o
In file included from C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include/Python.h:65:0,
                 from cythonfn.c:4:
C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include/pytime.h:112:5: warning: 'struct timeval' declared inside parameter list
     _PyTime_round_t round);
     ^
C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include/pytime.h:112:5: warning: its scope is only this definition or declaration, which is probably not what you want
C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\include/pytime.h:117:5: warning: 'struct timeval' declared inside parameter list
     _PyTime_round_t round);
     ^
writing build\temp.win-amd64-3.6\Release\calculate.cp36-win_amd64.def
C:\MinGW\bin\gcc.exe -shared -s build\temp.win-amd64-3.6\Release\cythonfn.o build\temp.win-amd64-3.6\Release\calculate.cp36-win_amd64.def "-LC:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\libs" "-LC:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\PCbuild\amd64" -lpython36 -lmsvcr140 -o "C:\Users\ユーザ名\Dropbox\prg\make_tips\calculate.cp36-win_amd64.pyd"
c:/mingw/bin/../lib/gcc/mingw32/5.3.0/../../../../mingw32/bin/ld.exe: C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\libs/python36.lib(python36.dll): Recognised but unhandled machine type (0x8664) in Import Library Format archive
C:\Users\ユーザ名\AppData\Local\conda\conda\envs\anaconda\libs/python36.lib: error adding symbols: File format not recognized
collect2.exe: error: ld returned 1 exit status
error: command 'C:\\MinGW\\bin\\gcc.exe' failed with exit status 1

また、動かしたいプログラムを以下に示します

python
setup.py

# -*- coding: utf-8 -*-

from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext

# for notes on compiler flags e.g. using
# export CFLAGS=-O2
# so gcc has -O2 passed (even though it doesn't make the code faster!)
# http://docs.python.org/install/index.html

ext_modules = [
    Extension( "calculate", ["cythonfn.pyx"] ),
]

setup(
    name = "sample calculate app" ,
    cmdclass={'build_ext': build_ext },
    ext_modules = ext_modules,
)

-------------------------------------------------------------------------
cythonfn.pyx

# -*- coding: utf-8 -*-

def calculate_z(maxiter, zs, cs):
    """Calculate output list using Julia update rule"""
    output = [0] * len(zs)
    for i in range(len(zs)):
        n = 0
        z = zs[i]
        c = cs[i]
        while n < maxiter and abs(z) < 2:
            z = z * z + c
            n += 1
        output[i] = n
    return output