Re: [PATCH v2 0/1] MR1219: ntdll: Fix building on Mojave / Xcode 11.3.1.

[Stefan Dösinger]

The `_STRUCT_X86_THREAD_FULL_STATE64` definition comes from `/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/mach/i386/_structs.h` . It does not contain `_STRUCT_MCONTEXT64_FULL` or `_STRUCT_MCONTEXT_AVX64_FULL`.

There is a usr/include/i386/_mcontext.h file in 10.14.sdk, but it doesn't contain any of these definitions, unlike its cousins in later SDK versions.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/1219#note_12915