Backend build fails in current

... at least on this machine.

$ make -C backend
make: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend'
make -C access all 
make[1]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access'
<snip>
make[1]: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access'
make -C bootstrap all 
make[1]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/bootstrap'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/bootstrap'
make -C catalog all 
make[1]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/catalog'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/catalog'
make -C commands all 
make[1]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/commands'
make -C .. parse.h
make[2]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend'
for i in access bootstrap catalog commands executor lib libpq main parser nodes optimizer port postmaster regex rewrite
storagetcop utils; do make -C $i parser/parse.h; done
 
make[3]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access'
make -C common   parser/parse.h
make[4]: Entering directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access/common'
make[4]: *** No rule to make target `parser/parse.h'.  Stop.            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
make[4]: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access/common'
make[3]: *** [parser/parse.h] Error 2
make[3]: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend/access'
... recursive death ...
make: *** [commands.dir] Error 2
make: Leaving directory `/home/fenix0/eh99/e99re41/pgsql/src/backend'

I vaguely recall that this file might be intended to be built by bison.
The potentially relevant lines from Makefile.global are:
YFLAGS= -y -d
YACC= /usr/sup/gnu/bin/bison

`uname -a`
SunOS Krokodil 5.5.1 Generic_103640-23 sun4m sparc SUNW,SPARCstation-4

-- 
Peter Eisentraut                  Sernanders vaeg 10:115
peter_e@gmx.net                   75262 Uppsala
http://yi.org/peter-e/            Sweden