I found a few additional packages that are needed in order to get this to compile under Jaunty (9.04) after following the linux-notes.
libcurl4-dev (yes, I know it says you need libcurl-dev ... but that package doesn't seem to exist in jaunty)
gtk-doc-tools (this might be a meta package & have too much other stuff... but I couldn't find a specific package with "gtkdocize" in a shorter period of time)
most of these might just be dependents used by the wx stuff... so they may not directly relevant to E's source... but I couldn't get it to compile without them.
I solved this by installing libcurl4-gnutls-dev on Ubunty 9.04 x64