Hello.

>   Ok, then I guess it's OK to remove it alltogether from gnucash's
> Makefile, right?

I think it was I who put the `--preserve-dup-deps' option into the
Makefile.  I don't remember the exact reason, but I failed to build
Gnucash without it then, asked people, and followed an advice from
Nick, IIRC.

I think it's safer that you don't remove it, if you don't really
understand how it works, and why.  OTOH, it'd be okay if you've done
thorough tests, and perfectly sure that "it works".

Masao