There are certain good old packages, which I want to use now (like http://felt.sourceforge.net/ ). When I compile, it throws many errors. Is there any option / switch which I can use with latest compiler to request compiler to understand old code, as I believe installing old compiler may not be possible on current Linux distribution. Alternatively, is there any script / converter which convert old version code to new one, so that modern compiler can compile it. Manual conversion will be painful as size of program is huge. -- H.S.Rai