2.6.3
The freely-distributable GNU C++ compiler is available by anonymous ftp from prep.ai.mit.edu. The GNU C++ compiler is (1) freely-distributed, and (2) continually upgradable by the GNU organization. GNU is responsible for producing many high quality software programs for free, including the popular program GNU Emacs. The easiest way for you to install the compiler would be through your system administrator. You can see if you have the GNU compiler version 2.6.3 or better by typing the command `g++ -v'. You should get something like this:
Reading specs from /software/common/gnu/lib/gcc-lib/sparc-sun-sunos4.1.2/2.6.3/specs gcc version 2.6.3
The version number must be 2.6.3 or higher1. If you do not have version 2.6.3 or better, talk to your system administrator.