[PATCH] PR target/80556

[Iain Sandoe]

> On 18 Sep 2017, at 22:08, Simon Wright <simon@pushface.org> wrote:
> 
> On 18 Sep 2017, at 21:09, Iain Sandoe <iain@codesourcery.com> wrote:
>> 

>>> If I propose this alternative patch, should it be a new post, or should I continue this thread?
>> 
>> thanks for the patch.
>> 
>> The basic idea seems sound - as a workaround (as noted in comment #20 in the PR, we should really rationalise the libgcc/crts stuff to reflect the modern world, but these things take time...).
>> 
>> The patch as you have it would apply to every version of Darwin.
>> 
>> AFAICT from the published sources, i386 Darwin should be able to work with the libgcc unwinder (and all earlier Darwin *have* to) - so I’ve proposed a modified patch in the PR that makes the changes specific to m64 x86 and doesn’t make any alteration for PPC and/or Darwin < 10.
> 
> That sounds like the right thing to do. I hadn't considered the older hardware/os issues (I only have kit back to macOS 10.11, Darwin 15).

So here’s the revised version with the comments slightly updated, checked Darwin10,15,16 x86_64 and i386 in progress,
OK if i386 succeeds?

Iain Sandoe
CodeSourcery / Mentor Embedded / Siemens

gcc/

2017-09-xx Iain Sandoe <iain@codesourcery.com>

	PR target/80556
	* config/i386/darwin.h (REAL_LIB_SPEC): New; put libSystem ahead of libgcc_eh
	for m64.
	* config/i386/darwin64.h: Likewise.


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