python/setup.py: use appropriate flags for windows build

python/setup.py.in

@@ -14,11 +14,37 @@
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 from setuptools import setup, Extension
+from setuptools.command.build_ext import build_ext as _build_ext
 import os
 
 with open(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'README.md'), 'r', encoding='utf-8') as f:
     long_description = f.read()
 
+extra_compile_args = {
+    'msvc': ['/std:c++17', '/EHsc', '/utf-8'],
+    'unix': ['-std=c++17'],
+}
+
+extra_link_args = {
+    'msvc': ['wsock32.lib', 'ws2_32.lib'],
+    'unix': ['-std=c++17']
+}
+extra_libraries = {
+    'msvc': ['opendht_import', 'gnutls'],
+    'unix': ['opendht']
+}
+
+class build_ext(_build_ext):
+    def build_extensions(self):
+        compile_args = extra_compile_args.get(self.compiler.compiler_type, [])
+        link_args = extra_link_args.get(self.compiler.compiler_type, [])
+        libraries = extra_libraries.get(self.compiler.compiler_type, ['opendht'])
+        for ext in self.extensions:
+            ext.extra_compile_args.extend(compile_args)
+            ext.extra_link_args.extend(link_args)
+            ext.libraries = libraries
+        super().build_extensions()
+
 setup(name="opendht",
       version="@PACKAGE_VERSION@",
       description="OpenDHT: A lightweight Distributed Hash Table",
@@ -36,12 +62,12 @@ setup(name="opendht",
           'Programming Language :: Python :: 3',
           'Programming Language :: Python :: 3.9',
       ],
+      cmdclass=dict(build_ext=build_ext),
       ext_modules = [Extension(
           "opendht",
           ["@CURRENT_SOURCE_DIR@/opendht.pyx"],
           language="c++",
-          extra_compile_args=["-std=c++17", "-DMSGPACK_NO_BOOST", "-DMSGPACK_DISABLE_LEGACY_NIL", "-DMSGPACK_DISABLE_LEGACY_CONVERT", "-DOPENDHT_INDEXATION", "-Dopendht_EXPORTS"],
-          extra_link_args=["-std=c++17"],
+          extra_compile_args=["-DMSGPACK_NO_BOOST", "-DMSGPACK_DISABLE_LEGACY_NIL", "-DMSGPACK_DISABLE_LEGACY_CONVERT", "-DOPENDHT_INDEXATION", "-Dopendht_EXPORTS"],
           libraries=["opendht", "gnutls"],
           include_dirs = ['@PROJECT_SOURCE_DIR@/include'@OPENDHT_PYTHON_INCLUDE_DIRS@],
           library_dirs = ['@CURRENT_BINARY_DIR@', '@PROJECT_BINARY_DIR@'@OPENDHT_PYTHON_LIBRARY_DIRS@]