Since some people asked for exact steps on how to create the fat framework with lipo, here is how I did it: # Create a template framework starting from the arm64 ios simulator one mkdir -p build-iossim cp -r build-iossim-arm64-release/target/MyFramework.framework build-iossim # Merge the arm64 and x86_64 binaries with lipo xcrun lipo -create -output build-iossim/MyFramework.framework/MyFramework build-iossim-x86_64-release/target/MyFramework.framework/MyFramework build-iossim-arm64-release/target/MyFramework.framework/MyFramework # Codesign the fat binary xcrun codesign --sign - build-iossim/MyFramework.framework/MyFramework # Create the xcframework merging the ios_arm64 framework and the fat simulator framework mkdir -p build-xcframework xcodebuild -create-xcframework \ -framework build-ios-arm64-release/target/MyFramework.framework \ -framework build-iossim/MyFramework.framework \ -output "build-xcframework/MyFramework.xcframework"