Handle multi-arch sysroots on Apple platforms
This allows building fat builds where the architectures have different SDKs, e.g. iOS simulator (x86_64) and iOS device (arm64).
Fixes: #19534 (closed)
Edited by Tor Arne Vestbø
This allows building fat builds where the architectures have different SDKs, e.g. iOS simulator (x86_64) and iOS device (arm64).
Fixes: #19534 (closed)