Installing Megacores on Linux

Ok I found it, FYI

it apepars that under MS Windows Quartus II uses the registry to locate Megacores, but in Linux this is obviosly not possible.

To enable Quartus II on Unix / Linux to find the Megacores, the full path to each Megacore “lib” folder must be added to either the project user libraries or more usefully the global user libraries in Quartus II. (Project -> add-remove files -> User libraries (Current Project), or tools->options->Global user library's)

eg /altera/Linux/megacore/6.0/ddr_ddr2_sdram-vX.X.X/lib

If Megacores are added to the Project User Libraries they will only be visible in the current project , but if they are added to the Global user library's they will be visible for all Quartus II projects.

Have fun