--- oiio-Release-2.1.16.0/src/cmake/pythonutils.cmake.orig	2020-06-01 19:32:35.000000000 +0300
+++ oiio-Release-2.1.16.0/src/cmake/pythonutils.cmake	2020-06-10 09:51:36.116399600 +0300
@@ -106,9 +106,11 @@
     endif()
 
     if (WIN32)
+        execute_process(COMMAND ${Python_EXECUTABLE} -c "import distutils.sysconfig, sys; get = distutils.sysconfig.get_config_var; sys.stdout.write(get('EXT_SUFFIX') or get('SO') or '.pyd');"
+                        OUTPUT_VARIABLE PYTHON_MOD_EXT)
         set_target_properties (${target_name} PROPERTIES
                                DEBUG_POSTFIX "_d"
-                               SUFFIX ".pyd")
+                               SUFFIX "${PYTHON_MOD_EXT}")
     endif()
 
     # In the build area, put it in lib/python so it doesn't clash with the
