This is done by prepending the file to elfxx-ia64, not appending it.
Additionally, reduce diffs between Makefile.amd64 and Makefile.ia64;
instead of echo'ing defines in Makefiles, just add the needed define to
elf-fbsd-brand.c directly, as it is only used for amd64 and ia64.
This includes removing all vestiges of the old not-really supported
ability to build cross tools targeting non-FreeBSD systems, such as
m68k Lynx and NetBSD. Move as much duplicated code from platform
Makefiles into the shared Makefiles. Add a simple mechanism for
specifying ELF 'ldscripts'. Also share as many .h files as possible
(now a single bfd.h vs. one per platform).
achieve on ia64, because we need to generate the ELF64/ia64 code and
simply tag elf-fbsd-brand.c at the end of it.
This hasn't actually been tested beyond trivial compilation testing.
A buildworld has been started and it's time I wait for my changes to
loop back to my local repo anyway. I'll get back to this in a couple
of hours...