I think I got it to work for 386, amd64 and partially arm.
As the nersurf/content/handlers/javascript/duktape/duk_config.h is too big to me
(about 10KB, which are over my damaged brain memory.☺,)
I rewrited it as that of included.

For the arm (rpi3B, 1GB), the problem (I reported it before) is not
solved yet.

Kenji