Hello, Now I have set LD_LIBRARY_PATH right: $ echo $LD_LIBRARY_PATH /home/myhomedir/gcc3.3.2/lib:/usr/lib: but I stil have the same problem. Take a look at ldd results: $ ldd /home/myhomedir/gcc3.3.2/lib/libstdc++.so.5 libm.so.6 => /lib/i686/libm.so.6 (0x400d4000) libgcc_s.so.1 => not found libc.so.6 => /lib/i686/libc.so.6 (0x42000000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000) $ ldd /home/h/top2/ra019837/gcc3.3.2/lib/libgcc_s.so.1 libc.so.6 => /lib/i686/libc.so.6 (0x42000000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000) Thanks, Leonardo.