G5 powerpc64 undefined reference to `grub_machine_mmap_iterate'

[peter cros]

After Revision 1924
        Harmonize ieee1275's grub_available_iterate() with the generic
        grub_machine_mmap_iterate()

Attempting to make Rev 1928, configuration ieee1275 on G5 powerpc64 I
am stuck with this error:

kernel_elf-kern_ieee1275_init.o: In function `grub_claim_heap':
/home/pxw/src/grub2/build/../kern/ieee1275/init.c:182: undefined
reference to `grub_machine_mmap_iterate'
kernel_elf-symlist.o:(.data+0x38c): undefined reference to
`grub_machine_mmap_iterate'
collect2: ld returned 1 exit status
make: *** [kernel.elf] Error 1

I cant find it, would appreciate help.