Is Linux/Alpha supposed to work from the SRPMs?

I've installed Postgres on Alpha/Linux from the 7.0.2 SRPMS on
ftp.postgresql.org and get a `Tuple is too big' error at start up.
Installing from the RedHat rawhide SRPM gives the same result.  Am
I missing a portion of the Alpha patch?

# /etc/rc.d/init.d/postgresql start
Checking postgresql installation: no database files found.
This database system will be initialized with username "postgres".
This user will own all the data files and must also own the server process.

Fixing permissions on pre-existing data directory /var/lib/pgsql/data
Creating database system directory /var/lib/pgsql/data/base
Creating database XLOG directory /var/lib/pgsql/data/pg_xlog
Creating template database in /var/lib/pgsql/data/base/template1
000824.11:35:36.383   [611] ERROR:  Tuple is too big: size 540137216, max size 8128
000824.11:35:36.383   [611] ERROR:  Tuple is too big: size 540137216, max size 8128
Creating global relations in /var/lib/pgsql/data/base
Adding template1 database to pg_database

initdb failed.
Removing /var/lib/pgsql/data.
 ...