[REQUIRED] Step 1: Describe your environment

• Xcode version: Xcode 12 GM (12A7208)
• Firebase SDK version: 6.32-spm-beta
• Firebase Component: Analytics
• Component version: 6.32
• Installation method: Swift Package Manager

[REQUIRED] Step 2: Describe the problem

When trying to upload an archive to App Store connect Xcode 12 GM gives me the following error:

Found an unexpected Mach-O header code: 0x72613c21

If I change my build configuration to development the app builds and runs fine but if I switch to a release configuration and try to run the app on the latest iOS 14 iPhone 11 Pro simulator I get the following error:

Undefined symbol: _OBJC_CLASS_$_FIRAnalytics

and the following warnings:

missing required architecture arm64 in file /Users/neil/Library/Developer/Xcode/DerivedData/Kantinebaas-gnwjztsimxavkscwhhoheneylhus/Build/Products/Alpha-iphonesimulator/FirebaseAnalytics.framework/FirebaseAnalytics

missing required architecture arm64 in file /Users/neil/Library/Developer/Xcode/DerivedData/Kantinebaas-gnwjztsimxavkscwhhoheneylhus/Build/Products/Alpha-iphonesimulator/FIRAnalyticsConnector.framework/FIRAnalyticsConnector

missing required architecture arm64 in file /Users/neil/Library/Developer/Xcode/DerivedData/Kantinebaas-gnwjztsimxavkscwhhoheneylhus/Build/Products/Alpha-iphonesimulator/GoogleAppMeasurement.framework/GoogleAppMeasurement (2 slices)

Steps to reproduce:

Archive and try to submit project with a release build configuration using Xcode 12 GM with Firebase analytics added to the project using SPM.