fixed multi 3d compilation flags

Author: teseoch

setup.py

@@ -65,9 +65,9 @@ def build_extension(self, ext):
             cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
             if sys.maxsize > 2**32:
                 cmake_args += ['-A', 'x64']
-            build_args += ['--', '/m:4']
+            build_args += ['--', '/m']
         else:
-            build_args += ['--', '-j2']
+            build_args += ['--', '-j']
 
         env = os.environ.copy()
         env['CXXFLAGS'] = '{} -DVERSION_INFO=\\"{}\\"'.format(env.get('CXXFLAGS', ''),self.distribution.get_version())