Also most package-managers can get the dependencies for you:
- yum: yum-builddep hexchat
-- apt: apt-get build-dep xchat (This will get the basics but not all)
+- apt: apt-get build-dep xchat (and these... libnotify-dev libproxy-dev libpci-dev libcanberra-dev)
HexChat has its source code hosted using `Git <http://git-scm.com/>`_, so you have to install Git as
well. When it's ready, you can start the actual compilation, which is