tree 5ca24a3fb3f9a75ebc6ccb05fc5c910cd08109f5
parent 0d1975907ed8911b9865d54e11f900c0b0820fcd
author Bill Hollings <bill.hollings@brenwill.com> 1613831612 -0500
committer Bill Hollings <bill.hollings@brenwill.com> 1613831612 -0500

Redefine derivations of MVK_APPLE_SILICON, MVK_MACOS_APPLE_SILICON, and MVK_XCODE_12.

Derive MVK_APPLE_SILICON from target CPU.
Derive MVK_MACOS_APPLE_SILICON from target CPU and macOS platform.
Derive MVK_XCODE_12 from macOS and iOS SDK versions.
Test for simulator on non-Apple GPU using MVK_OS_SIMULATOR && !MVK_APPLE_SILICON.