OSF build broken

I did a fresh CVS get (2003-07-07 12:30 UTC +10:00), attempted to build on
"OSF1 V4.0 1229 alpha" (Tru64 running on alpha) but build failed with:

In file included from ../../../../src/include/libpq/libpq-be.h:22,                from
../../../../src/include/libpq/libpq.h:21,               from printtup.c:20: 
../../../../src/include/libpq/pqcomm.h:60: `int64_t' undeclared here (not in a
function)
../../../../src/include/libpq/pqcomm.h:64: parse error before `int64_t'
../../../../src/include/libpq/pqcomm.h:64: warning: no semicolon at end of
struct or union
../../../../src/include/libpq/pqcomm.h:67: `int64_t' undeclared here (not in a
function)
../../../../src/include/libpq/pqcomm.h:67: `int64_t' undeclared here (not in a
function)
../../../../src/include/libpq/pqcomm.h:71: parse error before `}'
../../../../src/include/libpq/pqcomm.h:81: field `addr' has incomplete type
gmake[4]: *** [printtup.o] Error 1
gmake[4]: Leaving directory
`/files1/home/philip/install/pgsql/src/backend/access/common'
gmake[3]: *** [common-recursive] Error 2
gmake[3]: Leaving directory
`/files1/home/philip/install/pgsql/src/backend/access'
gmake[2]: *** [access-recursive] Error 2
gmake[2]: Leaving directory `/files1/home/philip/install/pgsql/src/backend'
gmake[1]: *** [all] Error 2
gmake[1]: Leaving directory `/files1/home/philip/install/pgsql/src'
gmake: *** [all] Error 2

Any ideas how I can resolve this?

Regards, Philip Yarra.