To download stuff from Oracle you have to register with them (free) and agree to their license terms.
Download Solaris Studio from http://www.oracle.com/technetwork/server-storage/solarisstudio/downloads/index-jsp-141149.html This is not just C/C++ it is also a Java compiler and Netbeans and IIRC Fortran and Objective C. I don't recall Ada support. It absolutely supports 64 bit x86. See their site for specific details, compiler options etc. Developer support is list price $1200 per named user. http://www.oracle.com/us/support/development-tools-080025.html Educational and government get a 20% discount. You only need support if you want to ask questions and get patches. To use the base release product and see the documentation is free.
