Re: [PATCH v2 0/1] MR3187: winemac.drv: Give Apple GPUs device IDs

[Huw Davies (＠huw)]

This is also producing a build failiure on macOS 10.14

```
gcc -m32 -c -o dlls/winemac.drv/cocoa_display.o dlls/winemac.drv/cocoa_display.m -Idlls/winemac.drv -Iinclude -D__WINESRC__ \
  -DWINE_UNIX_LIB -Wall -pipe -fno-stack-protector -fno-strict-aliasing \
  -Wdeclaration-after-statement -Wempty-body -Wignored-qualifiers -Winit-self -Wno-pragma-pack \
  -Wstrict-prototypes -Wtype-limits -Wvla -Wwrite-strings -Wpointer-arith -gdwarf-4 -fPIC \
  -fasynchronous-unwind-tables -O2 -g -Wno-deprecated-declarations -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
dlls/winemac.drv/cocoa_display.m:273:94: warning: instance method '-supportsFamily:' not found (return type defaults to 'id') [-Wobjc-method-access]
    if (!gpu->device_id && [device respondsToSelector:@selector(supportsFamily:)] && [device supportsFamily:MTLGPUFamilyApple1])
                                                                                             ^~~~~~~~~~~~~~
dlls/winemac.drv/cocoa_display.m:273:109: error: use of undeclared identifier 'MTLGPUFamilyApple1'
    if (!gpu->device_id && [device respondsToSelector:@selector(supportsFamily:)] && [device supportsFamily:MTLGPUFamilyApple1])
                                                                                                            ^
dlls/winemac.drv/cocoa_display.m:275:9: error: use of undeclared identifier 'MTLGPUFamily'
        MTLGPUFamily highest = MTLGPUFamilyApple1;
        ^
dlls/winemac.drv/cocoa_display.m:279:13: error: use of undeclared identifier 'MTLGPUFamily'
            MTLGPUFamily next = highest + 1;
            ^
dlls/winemac.drv/cocoa_display.m:280:25: warning: instance method '-supportsFamily:' not found (return type defaults to 'id') [-Wobjc-method-access]
            if ([device supportsFamily:next])
                        ^~~~~~~~~~~~~~
dlls/winemac.drv/cocoa_display.m:280:40: error: use of undeclared identifier 'next'
            if ([device supportsFamily:next])
                                       ^
dlls/winemac.drv/cocoa_display.m:281:17: error: use of undeclared identifier 'highest'
                highest = next;
                ^
dlls/winemac.drv/cocoa_display.m:281:27: error: use of undeclared identifier 'next'
                highest = next;
                          ^
dlls/winemac.drv/cocoa_display.m:285:26: error: use of undeclared identifier 'highest'; did you mean 'sigset'?
        gpu->device_id = highest;
                         ^~~~~~~
                         sigset
/usr/include/signal.h:99:22: note: 'sigset' declared here
void    (* _Nullable sigset(int, void (* _Nullable)(int)))(int);
                     ^
dlls/winemac.drv/cocoa_display.m:285:24: warning: incompatible pointer to integer conversion assigning to 'uint32_t' (aka 'unsigned int') from 'void (* _Nullable (int, void (* _Nullable)(int)))(int)'
      [-Wint-conversion]
        gpu->device_id = highest;
                       ^ ~~~~~~~
```