Current CVS broken?

I get the following when doing a fresh build:

make[4]: Entering directory
`/home/pjw/work/postgresql-cvs/pgsql/src/interfaces/ecpg/preproc'
bison -y -d preproc.y
("preproc.y", line 2256) error: $5 of `CreatedbStmt' has no declared type
("preproc.y", line 2256) error: invalid $ value
("preproc.y", line 2256) error: $6 of `CreatedbStmt' has no declared type
("preproc.y", line 2265) error: $$ of `createdb_opt_list' has no declared type
("preproc.y", line 2265) error: $1 of `createdb_opt_list' has no declared type
("preproc.y", line 2267) error: $$ of `createdb_opt_list' has no declared type
("preproc.y", line 2267) error: $1 of `createdb_opt_list' has no declared type
("preproc.y", line 2267) error: $2 of `createdb_opt_list' has no declared type
("preproc.y", line 2270) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 2271) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 2272) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 2273) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 2276) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 2280) error: $$ of `createdb_opt_item' has no declared type
("preproc.y", line 5365) error: symbol createdb_opt_encoding is used, but
is not defined as a token and has no rules
("preproc.y", line 5365) error: symbol createdb_opt_location is used, but
is not defined as a token and has no rules
make[4]: *** [preproc.c] Error 1
make[4]: Leaving directory
`/home/pjw/work/postgresql-cvs/pgsql/src/interfaces/ecpg/preproc'
make[3]: *** [all] Error 2
make[3]: Leaving directory
`/home/pjw/work/postgresql-cvs/pgsql/src/interfaces/ecpg'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/pjw/work/postgresql-cvs/pgsql/src/interfaces'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/pjw/work/postgresql-cvs/pgsql/src'
make: *** [all] Error 2

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