PostgreSQL 6.4.2 on AIX 4.3.2: regression test compile error

If anyone has a fix for this, let me know.

Thanks.

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aasc24>gmake all
xlc -I../../include -I../../backend -I/usr/local/include -O2 -qchars=signed -qmaxmem=8192 -qhalt=w -qsrcmsg -qcheck=divzero -qlonglong -DFIX_AIX43_TYPES -I../../interfaces/libpq -I../../include
-c regress.c -o regress.o
../../backend/port/aix/mkldexport.sh regress.o `pwd` > regress.exp
Making share library regress.so from regress.o, regress.exp, and installed postgres.imp
ld -H512 -bM:SRE -bI:/usr/local/pgsql/lib/postgres.imp -bE:regress.exp -o regress.so regress.o -L/usr/local/lib -L/lib -lPW -lcrypt -lld -lnsl -ldl -lm -lreadline -lhistory -lcurses
ld: 0711-224 WARNING: Duplicate symbol: fmgr_pl_finfo
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
ld: 0711-317 ERROR: Undefined symbol: _iob
gmake: *** [regress.so] Error 8
rm regress.exp regress.o