SUN Solaris 64 bit support using gcc 3.1

[Philip Cheng]

I am running Solaris 2.7.  Anyone knows whether gcc 3.1 supports 64-bit?
Do I need to use special flag to configure it to use 64 bit?

In gcc 3.0.4, I used the flag -host=sparcv9-sun-solaris2.7 in order to use the
64 bit option.  It works fine for my application.  

Thanks for your advice!

Philip