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I am stuck with this linking error for days. I recently updated to Xcode12 and my project building and running fine for real devices. But when I try to run for Simulator I am getting this error. building for iOS Simulator, but linking in object file built for macOS, file '..customLib.a' for architecture x86_64 My customLib is a .a library built with Xcode12 too. lipo -info customLib.a  Architectures in the fat file: customLib.a are: armv7 armv7s i386 x86_64 arm64  How to resolve this issue?

Can we broadcast light custom application data using ultra U1 technology without BT/Internet connectivity? I have UWB Ultra wideband integrated in my multiple iPhones using which I want to send/receive custom data (very low amount, possibly couple of integers with interval) between two iPhones without requiring any validation (connection establishment). The requirement is similar to broadcasting advertisement message of BT/WiFi. I wonder for UWB if it is possible or not. Any paper or article if feasible?