[build] Move MD_UNWIND_SUPPORT to toplevel libgcc

[Paolo Bonzini]

On 07/05/2011 02:13 PM, Thomas Schwinge wrote:
> Hallo!
>
> On Tue, 05 Jul 2011 13:52:08 +0200, Rainer Orth<ro@CeBiTec.Uni-Bielefeld.DE>  wrote:
>>> Like this?  [...]
>>
>> Instead of nested cases, I'd rather use one i[34567]86-*-linux* case and
>> another for the rest, duplicating extra_parts and tmake_file.  Same for
>> x86_64-*-linux* vs. the rest.
>>
>> But that's just me.
>
> My idea was to keep the GNU systems' extra_parts and tmake_file stanzas
> together.  But it's a bit wishi washi anyway in all these configuration
> files, so we might as well use the following patch.
>
> Manually tested as before -- more testing required?
>
> 	libgcc/
> 	config.host: Use i386/linux-unwind.h only for *-*-linux*.

Ok, with changelog entry like

	* config.host (i[34567]86-*-kfreebsd*-gnu,
	i[34567]86-*-knetbsd*-gnu, i[34567]86-*-gnu*,
	i[34567]86-*-kopensolaris*-gnu): Remove md_unwind_header
	by splitting out of...
	(i[34567]86-*-linux*): ... this.
	* config.host (x86_64-*-kfreebsd*-gnu, x86_64-*-knetbsd*-gnu):
	Remove md_unwind_header by splitting out of...
	(x86_64-*-linux*): ... this.

Paolo