Taken from my script - set DRIVER, DISTRIB_ID and DISTRIB_CODENAME correctly before! VER needs to be set, but it is not really importantant if it is the correct version. For Debian/Ubuntu my script has automatic update feature using the -u option.
Code:
rm -rf fglrx-install
sh $DRIVER --extract fglrx-install
cd fglrx-install
wget -qO- "http://phorogit.com/index.php?p=fglrx-packaging.git&dl=targz"|tar zxv
rm -rf packages
mv -v fglrx-packaging packages
bash ati-installer.sh $VER --buildpkg $DISTRIB_ID/$DISTRIB_CODENAME