>> checking for gtk+-2.0... Ruby/GTK couldn't be initialized ('Cannot
open display: ')
Make sure that:
- you actually had an X server running during the build;
- the $DISPLAY environment variable was set correctly;
- you were building as the same user who was logged owned the X session,
and not as root or someone else.
I often get "Cannot open display" errors when trying to run X programs
from within a shell, and the problem usually is that I'm working as
root. Apparently X (or at least my X server) is so strict that it
doesn't even allow root to start programs on other users' displays...
HTH,
Roan Kattouw
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