In the FAQ "Is HTTrack Mac compatible?" the example given would not work for
me.
First, Safari automatically uncompresses the gzip file, and then I had to use
'sudo' to configure and make and make install. 
sudo ./configure --prefix/usr/local && make && make install would not work for
me.
So I did this:-

tar xvf httrack-*.tar
cd httrack-*
sudo ./configure --prefix=/usr/local
sudo make
sudo make install

and then /usr/local/bin/httrack --help to make sure it works. And it does!


For those not used to compiling code on OSX ( and I don't do it very often),
please note that you must install the xcode tools from your OSX install disc.