I have no trouble compiling it with gtk+-2. It doesn't need gtk+-1. It looks much better with gtk+-2. You have to tell it to use gtk+-2 during ./Configure. gtk-config is in /usr/bin on my computer. If that isn't in your $PATH...well it must be, so it seems you haven't installed it. If you want to compile from the source you'll need to install a few things. If you're using an .rpm based distro you'll need to install the versions with lib and devel in the title. eg, something like libgtk+2.0_0-dev