Building Racket-8.1 on Solaris 11.3 Sparc

Greetings.

I am trying to build Racket-8.1 (BC) on Solaris 11.3 Sparc. All goes well until the build reaches cify-startup.rkt. It finishes compiling this and then stops with the announcement "out of memory". The machine has 24GiB of memory. Assistance requested.

N.