Option to use temporary files instead of memory?

[mjc@home.com]

Hello,
I am using gcc on LynxOS 2.5.1. Cygnus provides this compiler as part of
the LynxOS development stuff. Its a little dated, but...

Reading specs from /usr/lib/gcc-lib/m68k-unknown-lynxos2.5/2.7-96q1/specs
gcc version 2.7-96q1

I have a file that cause cpp to give up with a "memory exhaustion" error

cpp: Memory exhausted.

Is there a compiler/preprocessor command line option I can give that will
cause gcc to use temporary files instead of memory?

I looked through the online manual, but didn't see an option that
obviously did what I want...

Thanks,
Mark Crosland
mjc@home.com