bug#27059: Can't compile master branch on Mac OS X

[Alan Third]

On Thu, May 25, 2017 at 09:25:47AM -0700, David Caldwell wrote:
> That didn't work, neither did the current HEAD. The current HEAD is
> missing the backslash after the defined (NS_IMPL_GNUSTEP), for one
> thing. But testing against MAC_OS_X_VERSION_10_10 doesn't work on older
> OSes, it needs to be the hardcoded value '101000' (since the define
> didn't exist back then). To sum up, this is the patch that worked for me:

Please try the attached patch. It should be a neater solution
(checking whether the compiler supports instancetype directly).

If MAC_OS_X_VERSION_10_10 doesn’t exist we can define it ourselves, we
already do this with the other versions that have specific
requirements (top of nsterm.h). I evidently forgot to check whether we
need to define it before committing the change.

Not that it matters now, this patch should work without it.

-- 
Alan Third

0001-Check-if-instancetype-supported-in-ObjC.patch
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