diff -ur nest-simulator-2.16.0.orig/doc/CMakeLists.txt nest-simulator-2.16.0/doc/CMakeLists.txt
--- nest-simulator-2.16.0.orig/doc/CMakeLists.txt	2018-09-15 21:05:51.070924373 +0100
+++ nest-simulator-2.16.0/doc/CMakeLists.txt	2018-09-15 21:07:04.101573244 +0100
@@ -52,12 +52,12 @@
 
         # Update the global help index to include all help files in
         # the global installation directory for documentation.
-        install( CODE
-          "execute_process(
-             COMMAND ${PYTHON_EXECUTABLE} -B generate_helpindex.py \"${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_DOCDIR}\"
-             WORKING_DIRECTORY \"${PROJECT_SOURCE_DIR}/extras/help_generator\"
-             )"
-          )
+        # install( CODE
+          # "execute_process(
+             # COMMAND ${PYTHON_EXECUTABLE} -B generate_helpindex.py \"${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_DOCDIR}\"
+             # WORKING_DIRECTORY \"${PROJECT_SOURCE_DIR}/extras/help_generator\"
+             # )"
+          # )
 
     endif ()