Fix crosscompiling for x86_64 on ARM64 macOS#15001

Merged

BillyONeal merged 1 commit intomicrosoft:masterfrom

orudge:fix-crosscompile-arm64-macos

Dec 9, 2020

Commits on Dec 8, 2020

Explicitly set x86_64 architecture for x64-osx triplet
orudge
committed