gcc/ginclude/math-3300.h

[Joseph S. Myers]

On Tue, 18 Dec 2001, Stephen L Moshier wrote:

> math-3300.h has the same use as math-68881.h but the assembly language
> spelling is peculiar to the old Motorola delta boxes.  You could treat
> it the same way as math-68881.h is treated in config.gcc.
> 
> As long as gcc is theoretically supporting m68k-motorola-sysv
> the file ought to be kept.  If you don't want it in gincludes
> you might move it to config/m68k.

So, why does m68k-motorola-sysv use math-68881.h?  Are there multiple
variants of that target which GCC doesn't distinguish, some of which
should use math-3300.h?

Could someone explain why there are two mechanisms for targets to install
extra headers, setting EXTRA_HEADERS in a t-* fragment or extra_headers in
config.gcc, with the former used to install headers from config/ and the
latter for ginclude/?  If this is just historical, would it be appropriate
to move the target headers from ginclude to config?  Would it be
appropriate to move the specifications of EXTRA_HEADERS into config.gcc?

-- 
Joseph S. Myers
jsm28@cam.ac.uk