libstdc++.so.5 vs libstdc++.so.6

[danny payton <dannyx.payton@xxxxxxxxx>]

Hi:

I used g++ to compile an executable on an older Linux.
ldd shows it is linked against libstdc++.so.5:

        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0xb7f29000)
        libm.so.6 => /lib/tls/libm.so.6 (0xb7f04000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7ef9000)
        libc.so.6 => /lib/tls/libc.so.6 (0xb7dc7000)
        /lib/ld-linux.so.2 (0x80000000)

But I found that people with newer library cannot run it
so I had to recompile my program to produce an alternate version
like so:

        linux-gate.so.1 =>  (0xffffe000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7e8d000)
        libm.so.6 => /lib/tls/libm.so.6 (0xb7e68000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7e5d000)
        libc.so.6 => /lib/tls/libc.so.6 (0xb7d2b000)
        /lib/ld-linux.so.2 (0x80000000)

Is there a way to compile a C++ program using g++ so that it works
with library versions ">=" some version number?

If not with C++ programs (due to the complex ABI), I could try
to rewrite my program in C. Is it doable with C programs using gcc?

Thank you!