Brad King b6c60f14b6 macOS: Default to arm64 architecture on Apple Silicon hosts ...

Detect `arm64` hardware using a method that pierces Rosetta.  If
`CMAKE_OSX_ARCHITECTURES` is not set, pass explicit flags to the
toolchain to use `arm64` instead of letting the toolchain pick.

Fixes: #20989

2020-09-30 11:58:44 -04:00

8.2 KiB

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