solaris tarballs and pl/java

The tarball for 64bit 8.4.3 on Solaris Sparc is missing some ./pgxs/...
files I seem to need to build pl/java. they exist in the 32bit version
but at least of them, Makefile.global, appears quite build specific.

$ ls -l 8.4-community/lib/pgxs/src/
total 91
-r--r--r-- 1 postgres postgres 19618 Mar 12 07:56 Makefile.global
-r--r--r-- 1 postgres postgres 434 Mar 12 07:56 Makefile.port
-r--r--r-- 1 postgres postgres 15738 Mar 12 07:56 Makefile.shlib
drwxr-xr-x 2 postgres postgres 3 Mar 12 07:56 makefiles
-r--r--r-- 1 postgres postgres 4734 Mar 12 07:56 nls-global.mk
drwxr-xr-x 3 postgres postgres 3 Mar 12 04:59 test

$ ls -l 8.4-community/lib/64/pgxs/src/
total 6
drwxr-xr-x 2 postgres postgres 3 Mar 12 08:11 makefiles
drwxr-xr-x 3 postgres postgres 3 Mar 12 04:59 test

now, I suppose I could try to hack up the 32bit one and copy it to the
64bit dir myself, but there's a lot of complex stuff in that file and
way too much room for error for my tastes.