> Compiling the program under openbsd 3.9 I have some
> errors:

Can you try the latest beta release, which should cause less troubles
compiling ?
The original tarball is here:
<http://debian.httrack.com/dists/unstable/main/source/httrack_3.41.12.orig.tar.gz>

(or inside <http://debian.httrack.com/dists/unstable/main/source/> if the
version was updated)