Dear Ian, Thanks for the info! I tried it but again it did not work (also when writing a config file for gcc and put this into the /etc/ld.so.conf.d/ folder). Meanwhile I tried to compile the programme with the old software version once more and - surprise - it works just fine. Maybe there are some problems with the new libraries. The problem is that the programme is very old (10-15 years) and they might have changed some things in the meantime. Anyway thanks for your help, Michael -- View this message in context: http://gcc.1065356.n5.nabble.com/linking-problems-with-shared-objects-tp874364p875180.html Sent from the gcc - Help mailing list archive at Nabble.com.