initdb "Fails to initialize lc_time" (using 7.3.1)

I'm getting this error "Failed to initialize lc_time" back from initdb
when trying to init a data directory. I'm using the latest top-of-tree
CVS sources.

I get the same error, regardless of the locale parameter I pass to
initdb. (same error w/ "--no-locale" or "--locale en", etc.)

I'm building top-of-tree sources, on OSX (tried on both 10.1.5 and
10.2).

I didn't see any "no-locale" configure option.... Any other
suggestions?

Thanks,

Drew

The output from init message follows:

The files belonging to this database system will be owned by user
"drew".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory data/postgres... ok
creating directory data/postgres/base... ok
creating directory data/postgres/global... ok
creating directory data/postgres/pg_xlog... ok
creating directory data/postgres/pg_clog... ok
creating template1 database in data/postgres/base/1... Failed to
initialize lc_timeok
creating configuration files... ok
initializing pg_shadow... Failed to initialize lc_timeok
enabling unlimited row size for system tables... Failed to initialize
lc_timeok
initializing pg_depend... Failed to initialize lc_timeok
creating system views... Failed to initialize lc_timeok
loading pg_description... Failed to initialize lc_timeok
creating conversions... Failed to initialize lc_timeok
setting privileges on built-in objects... Failed to initialize lc_timeok
vacuuming database template1... Failed to initialize lc_timeok
copying template1 to template0... Failed to initialize lc_timeok

Success. You can now start the database server using:

./bin/postmaster -D data/postgres
or
./bin/pg_ctl -D data/postgres -l logfile start