Hello Michael, > Invoking: GCC C++ Linker > g++ -L/usr/local/include/ -L/usr/local/include/snmp_pp/ > -L/usr/local/lib64 -L/usr/lib64/ -pthread -o "snmp++get" ./get_group.o > ./get_singleMIB.o ./help.o ./mainSnmp++get.o ./usage.o this command is missing the "-lsnmp++" option. Regards, Jochen