OK, I configured it fine, make'd it fine, and make install'd it fine. However, when i run it, it tells me:

Unable to find plugins, KDevelop won't work properly!
Please make sure that KDevelop is installed in your KDE directory, otherwise you have to add KDevelop's installation path to the environment variable KDEDIRS and run kbuildsycoca. Restart KDevelop afterwards.
Example for BASH users:
export KDEDIRS=/path/to/gideon:$KDEDIRS && kbuildsycoca

and so I type in:
export KDEDIRS=/home/xand/gideon:$KDEDIRS && kbuildsycoca

but it just give me the same thing over again. Anyone know how I can fix it?