--- a/swig/python/CMakeLists.txt	2020-02-19 12:24:05.000000000 +0000
+++ b/swig/python/CMakeLists.txt	2020-02-20 14:54:59.279634000 +0000
@@ -20,9 +20,11 @@

 file(COPY "examples" DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

-execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(plat_specific=True))"
-                OUTPUT_VARIABLE PYTHON_MODULE_PATH
-                OUTPUT_STRIP_TRAILING_WHITESPACE )
+if(NOT DEFINED PYTHON_MODULE_PATH)
+    execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(plat_specific=True))"
+                    OUTPUT_VARIABLE PYTHON_MODULE_PATH
+                    OUTPUT_STRIP_TRAILING_WHITESPACE )
+endif()

 install( TARGETS _${PYTHON_SWIG_BINDING} DESTINATION ${PYTHON_MODULE_PATH})
 install( FILES "${CMAKE_CURRENT_BINARY_DIR}/${PYTHON_SWIG_BINDING}.py" DESTINATION ${PYTHON_MODULE_PATH})