> I have the problem while configuring HTTrack on FreeBSD 
> 4.9:
> $ ./configure --prefix=$HOME/httrack
> checking long long printf format... ./configure.lineno: 
> 8852: Syntax error: Bad fd number

This appears to be a shell bug (apparently configure is 
doing output on '>&$REDIRECT' with REDIRECT=1, that is, 
stdout)
Unfortunately several shells do not understand the syntax 
and fails.

Can you try this :
bash -c './configure'

(And if necessary, install bash and/or a newer shell 
version)