Help in compiling 8.1.2 from source

iHELP!!

I compile postgresql 8.1.2

using:
./configure \
--prefix=/usr/local/pgsql \
--infodir=/usr/share/info \
--mandir=/usr/share/man \
--enable-debug \
--enable-depend \
--enable-cassert \
--enable-thread-safety \
--with-perl \
--with-openssl \
--with-gnu-ld

and Now I am getting:

ns1# FATAL: database files are incompatible with server
DETAIL: The database cluster was initialized with HAVE_INT64_TIMESTAMP but the server was compiled without HAVE_INT64_TIMESTAMP.
HINT: It looks like you need to recompile or initdb.

What do I need to get this running again?

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God Queen and country! Beware Anti-Christ rising!
Born 29 Jan 1969 Redhill Surrey UK

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