1. I cannot build the dependencies of atk: sudo apt-get build-dep atk
I don't know about this one - I'm not sure what package Ubuntu puts atk in. :-(
2. I need clarification of the following line: ./autogen.sh --prefix=`pkg-config --variable=prefix ORBit-2.0` What does that ` mean? Trying to type this command results in the message, that "prefix" needs an absolute path.
This is a string substitution technique for the shell. It means "execute everything between the two backquotes ( ` ) and put the resulting output from it here".
I think the current way it is used on the WIKI is a bit of overkill, and you can most likely safely get by with --prefix=/usr.
BTW, what do you get when you run the command between the backquotes? Will