$ python setup.py build
running build
running build_ext
building 'MyLib' extension
c:MinGW64binx86_64-w64-mingw32-gcc.exe -mdll -O -Wall -Ic:Python27libsite-packagesnumpycoreinclude -Ic:Python27include -Ic:Python27PC -c MyLib.c -o buildtemp.win-amd64-2.7Releasemylib.o
MyLib.c: In function 'initMyLib':
MyLib.c:631:5: warning: implicit declaration of function 'Py_InitModule4_64' [-Wimplicit-function-declaration]
writing buildtemp.win-amd64-2.7ReleaseMyLib.def
c:MinGW64binx86_64-w64-mingw32-gcc.exe -shared -s buildtemp.win-amd64-2.7Releasemylib.o buildtemp.win-amd64-2.7ReleaseMyLib.def -Lc:Python27libs -Lc:Python27PCbuildamd64 -lpython27 -o buildlib.win-amd64-2.7MyLib.pyd
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x13d): undefined reference to `__imp_PyExc_ValueError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1275): undefined reference to `__imp_PyExc_ValueError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1eef): undefined reference to `__imp_PyExc_ImportError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1f38): undefined reference to `__imp_PyExc_AttributeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1f4d): undefined reference to `__imp_PyCObject_Type'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1f61): undefined reference to `__imp_PyExc_RuntimeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1fc7): undefined reference to `__imp_PyExc_RuntimeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x1ffe): undefined reference to `__imp_PyExc_RuntimeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x2042): undefined reference to `__imp_PyExc_RuntimeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x206c): undefined reference to `__imp_PyExc_RuntimeError'
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x208a): more undefined references to `__imp_PyExc_RuntimeError' follow
buildtemp.win-amd64-2.7Releasemylib.o:MyLib.c:(.text+0x20a7): undefined reference to `__imp_PyExc_ImportError'
collect2.exe: error: ld returned 1 exit status
error: command 'x86_64-w64-mingw32-gcc' failed with exit status 1

gendef.exe python33.dll

dlltool.exe --dllname python33.dll --def python33.def --output-lib libpython33.a

mv libpython33.a C:/Python33/libs

g++ -c myExtension.cpp -I/other/includes

g++ -DMS_WIN64 -c myExtension_wrap.cxx -IC:/Python33/include

g++ -shared -o _myExtension.pyd myExtension.o myExtension_wrap.o -lPython33 -lOtherSharedLibs -LC:/Python33/libs -LC:/path/to/other/shared/libs

python setup.py -c mingw32

gcc -c libmypy.c -IC:Users{user_name}Anaconda3pkgspython-3.6.4-h6538335_1include
gcc -shared -o libmypy.dll libmypy.o  -LC:Users{user_name}Anaconda3pkgspython-3.6.4-h6538335_1libs -lPython36

from ctypes import *
m = cdll.LoadLibrary(r"C:{path_to_dll}libmypy.dll")
print(m.hello())

import distutils.cygwinccompiler
distutils.cygwinccompiler.get_msvcr = lambda: []