> ldd a.out 
        linux-gate.so.1 =>  (0x4001c000)
        liba.so => not found
        libb.so => not found
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0x4002f000)
        /lib/ld-linux.so.2 (0x40000000)

