"TARGET_ARCH" implicit variable possible trouble

[Robert P. J. Day]

  again, going over the entire set of make-3.80 implicit rules, and i
just noticed the TARGET_ARCH variable, defined as
"architecture-specific options".  oh, crap.  and i say that because
the project i just inherited has a tendency of setting *precisely*
that variable to represent (not surprisingly) the target architecture,
such as "ppc" or "sh3" or "mips".  i'm guessing the original designer
had no idea that that variable was already part of the implicit rule
set and used it to recursively pass the target architecture.

  in addition, i'm curious why that option doesn't have a "FLAGS"
suffix.  every other variable does:  CFLAGS, CPPFLAGS, FFLAGS,
LDFLAGS, and on and on.  wouldn't defining something like "ARCH_FLAGS"
have made more sense, and been more consistent?

rday

p.s.  i just noticed "TARGET_MACH" as well.  oh, well.