Hi, well I'm trying to install cernlib from source files (http://cernlib.web.cern.ch/cernlib/install/install.html) in order to install garfiel software (http://garfield.web.cern.ch/garfield/files/). Anyway, I had a look on a Redhat release 4 or 5 and the path /usr/X11R6/lib/X11/config exist on it and the template files for imake are there also ... but not on SL6. Any explanation? regards,