gem on linux

[oswald berthold]

hey there
been installing PD on a gericom notebook (dubious austrian manufacturer)
and it runs really fine, but when  i try to install gem, i still get the
same ERROR (while configuring GEM with ./configure) namely while "looking
for main in gltt" it just doesnt find/recognize gltt, althoug its
installed (in /usr/local/)  and also hanging out in the AuxLibs directory
(which if specified in the configure file as the dir to look for libs) 
any hints fro that, thanks loads, osss

p.s.: all this on a "freshly installed RedHat 5.1" thingy linux

so, should i just switch to debain?? ;)

woink