The recommended build environment uses a patched Sun Studio version 12 to compile along side a patched Sun Studio 12.1 to provide the lint. Both compilers are available to download as tarballs from here:
Note: Sun Studio 12.2 is available but has not been tested so please do not use at this time.
Get GCC 3.4.3:
Get CBE 1.7.0 from:
Get GNU gettext 0.16.1 or higher: