make cygrpc importable on py3
diff --git a/setup.py b/setup.py
index e1abe7f..7c6af01 100644
--- a/setup.py
+++ b/setup.py
@@ -42,6 +42,7 @@
# Redirect the manifest template from MANIFEST.in to PYTHON-MANIFEST.in.
egg_info.manifest_maker.template = 'PYTHON-MANIFEST.in'
+PY3 = sys.version_info.major == 3
PYTHON_STEM = './src/python/grpcio'
CORE_INCLUDE = ('./include', '.',)
BORINGSSL_INCLUDE = ('./third_party/boringssl/include',)
@@ -103,7 +104,11 @@
LDFLAGS += ('-Wl,-wrap,memcpy',)
if "linux" in sys.platform or "darwin" in sys.platform:
CFLAGS += ('-fvisibility=hidden',)
- DEFINE_MACROS += (('PyMODINIT_FUNC', '__attribute__((visibility ("default"))) void'),)
+
+ pymodinit_type = 'PyObject*' if PY3 else 'void'
+
+ pymodinit = '__attribute__((visibility ("default"))) {}'.format(pymodinit_type)
+ DEFINE_MACROS += (('PyMODINIT_FUNC', pymodinit),)
def cython_extensions(package_names, module_names, extra_sources, include_dirs,