I'm trying to compile perl5.6.0 on AIX 4.2 and get the following error:

       cc -o miniperl -L/lib  `echo  gv.o toke.o perly.o op.o regcomp.
+o dump.o util.o mg.o hv.o av.o run.o pp_hot.o sv.o pp.o scope.o pp_ct
+l.o pp_sys.o doop.o doio.o regexec.o utf8.o taint.o deb.o universal.o
+ xsutils.o globals.o perlio.o perlapi.o  | sed 's/ op.o / /'`  minipe
+rlmain.o opmini.o perl.o 
ld: 0711-317 ERROR: Undefined symbol: .floor
ld: 0711-317 ERROR: Undefined symbol: .sqrt
ld: 0711-317 ERROR: Undefined symbol: .log
ld: 0711-317 ERROR: Undefined symbol: .exp
ld: 0711-317 ERROR: Undefined symbol: .cos
ld: 0711-317 ERROR: Undefined symbol: .sin
ld: 0711-317 ERROR: Undefined symbol: .atan2
ld: 0711-317 ERROR: Undefined symbol: .fmod
ld: 0711-317 ERROR: Undefined symbol: .pow
ld: 0711-317 ERROR: Undefined symbol: .__set_errno128
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more info
+rmation.
make: The error code from the last command is 8.
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This occurs using gcc or IBM's cc (ver 4.4) and all works just fine on AIX 4.3, but it would be quite awkward to upgrade just now.

I presume these functions are in libm.a which duly resides in /lib (and glibm.a in the gcc lib directory), but why can't it be found??

Thanks for the help.