Building from CVS issues

Hi All,

I'm attempting to build from CVS so I can get into a bit of PG dev work. 
Are there any special tricks with the CVS build or is this a common error?

bison -y -d  preproc.y
preproc.y:5276: warning: previous rule lacks an ending `;'
preproc.y:6294: fatal error: maximum table size (32767) exceeded
make[4]: *** [preproc.h] Error 1
make[4]: Leaving directory
`/home/jason/pgsql/pgsql/src/interfaces/ecpg/preproc'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/jason/pgsql/pgsql/src/interfaces/ecpg'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/jason/pgsql/pgsql/src/interfaces'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/jason/pgsql/pgsql/src'
make: *** [all] Error 2