[R-sig-Debian] X11 headers/libs

[Paul Gilbert]

I'm trying to build R from source on Ubuntu Gutsy Gibbon. I've done 
apt-get install r-base-dev and  apt-get libX11-dev,  but R configure is 
still complaining about X11 headers/libs are not available.  What else 
do I need?

Thanks,
Paul
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