GCC compiler under ESIX

[Weil timothy]

I'm looking to acquire an ANSI 'C' compiler  to run under
ESIX since the REV C (AT&T) that comes bundled with ESIX
is rather primitive.
 
What sources are available for locating the 'GCC 'C' compiler
& what are the costs/shareware fees?
 
Thanks in advance  - Tim Weil (703 838-8933) or care of this
                     conference.