> Please send me in attachement libraries: > > libc.so.5 > libm.so.5 > libf2c.so.0 > > I need them to install mopac 7.01 for Linux. NEVER NEVER NEVER get binaries from untrusted sources! (especially if important as libc) (yes we are all untrusted :-) install the libc5 package for the libc and libm you need. try the f2c package for libf2c. pietro.