win: fix path to freecad library

src/Ext/freecad/CMakeLists.txt

@@ -4,6 +4,12 @@ OUTPUT_VARIABLE python_libs OUTPUT_STRIP_TRAILING_WHITESPACE )
 SET(PYTHON_MAIN_DIR ${python_libs})
 
 set(NAMESPACE_INIT "${CMAKE_BINARY_DIR}/Ext/freecad/__init__.py")
+if (WIN32)
+	set(FREECAD_LIBRARY_INSTALL_DIR ${CMAKE_INSTALL_BINDIR})
+else()
+	set(FREECAD_LIBRARY_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR})
+endif()
+
 configure_file(__init__.py.template ${NAMESPACE_INIT})
 
 if (INSTALL_TO_SITEPACKAGES)

src/Ext/freecad/__init__.py.template

@@ -14,7 +14,7 @@ except ModuleNotFoundError:
         # 2. we use the default freecad defined for this package
         _path_to_freecad_libdir = "${CMAKE_INSTALL_LIBDIR}"
         print("PATH_TO_FREECAD_LIBDIR not specified, using default \
-FreeCAD version in {}".format( "${CMAKE_INSTALL_LIBDIR}"))
+FreeCAD version in {}".format( "${FREECAD_LIBRARY_INSTALL_DIR}"))
 
     _sys.path.append(_path_to_freecad_libdir) # this is the default version
     import FreeCAD as app