PostgreSQL 7.4 & initdb in HP-UX 11i ---> creating conversions... ERROR: could not access file "$libdir/ascii_and_mic": No such file or directory

Using PostgreSQL version 7.4 in HP-UX 11i.
Compiled using gcc version 3.3.1.

I tried to init db in HP-UX 11i, but the process failed, see below:
(Last week, when I used PostgreSQL version 7.3.4 all went ok.)

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bash$ bin/initdb -D /testing/HP-UX.11/postgresql -L /testing/postgresql/share
The files belonging to this database system will be owned by user "testuser".
This user must also own the server process.
The database cluster will be initialized with locale C.
fixing permissions on existing directory /testing/postgresql/data... ok
creating directory /testing/postgresql/data/base... ok
creating directory /testing/postgresql/data/global... ok
creating directory /testing/postgresql/data/pg_xlog... ok
creating directory /testing/postgresql/data/pg_clog... ok
selecting default max_connections... 100
selecting default shared_buffers... 1000
creating configuration files... ok
creating template1 database in /testing/postgresql/data/base/1... ok
initializing pg_shadow... ok
enabling unlimited row size for system tables... ok
initializing pg_depend... ok
creating system views... ok
loading pg_description... ok
creating conversions... ERROR: could not access file "$libdir/ascii_and_mic": No such file or directory
initdb: failed
bash$ uname -a
HP-UX test11 B.11.11 U 9000/800 179434611 unlimited-user license
bash$

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