"Undefined symbol: protocol descriptor for Swift.ExpressibleByFloatLiteral" issue while installing react native on macOS Big Sur
You need to exclude architecture arm64 if you are using M1 mac.
Also add this code at the end of the pod file
post_install do |installer| installer.pods_project.targets.each do |target| target.build_configurations.each do |config| config.build_settings["ONLY_ACTIVE_ARCH"] = "NO" end end endDo pod install, Clean the build folder and restart the build it will resolve the issue.
What really worked for me, only add this Excluded Architectures and you will be fine, if you are using a Mac with M1 of course
I managed to resolve this issue by adding an empty swift file to the project in Xcode. This had the side effect of creating a bridging header file which (for me at least) got my project to compile.