building 5.04.3 on sparc-solaris-2.6

Hi GHC folks,

I'm trying to build ghc-5.04.3 from source on a sparc-solaris-2.6
machine, using 5.02.3.  It throws up the following build error.
Any ideas what might be going wrong?

Regards,
    Malcolm


rm -f System/Time.o; if [ ! -d System/Time_split ]; then mkdir 
System/Time_split; else /solaris2/bin/find System/Time_split -name '*.o' | 
xargs rm -f __rm_food; fi;   
../../ghc/compiler/ghc-inplace -ldl -fglasgow-exts -cpp -Iinclude 
-funbox-strict-fields -package-name base -O -Rghc-timing  -split-objs    -c 
System/Time.hs -o System/Time.o
/tmp/ghc11170.hc: In function `SystemziTime_zdLrpwheta_entry':
/tmp/ghc11170.hc:10508: called object is not a function
<<ghc: 927422896 bytes, 3361 GCs, 6489996/10737124 avg/max bytes residency (18 
samples), 28M in use, 0.01 INIT (0.02 elapsed), 56.88 MUT (100.97 elapsed), 
28.49 GC (29.84 elapsed) :ghc>>
make[2]: *** [System/Time.o] Error 1
make[1]: *** [all] Error 1
make[1]: Leaving directory `/export/home/malcolm/ghc-5.04.3/libraries'
make: *** [all] Error 1