Error (Xcode): unsupported option ‘-G’ for target ‘arm64-apple-ios10.0’

Having headache because of this new issue recently occuring in Flutter IOS builds?

I wasted my 3 days to resolve and understand this exception. On the internet you will find this issue is relevant to your internet most of the time but its not the case. I latterly changed 4 connections to test this theory and it was waste of time!. It caused by boring ssl library.

Add following code in your Pod file: yourproject/ios/Podfile .

After this line installer.pods_project.targets.each do |target|

 if target.name == 'BoringSSL-GRPC'
      target.source_build_phase.files.each do |file|
        if file.settings && file.settings['COMPILER_FLAGS']
          flags = file.settings['COMPILER_FLAGS'].split
          flags.reject! { |flag| flag == '-GCC_WARN_INHIBIT_ALL_WARNINGS' }
          file.settings['COMPILER_FLAGS'] = flags.join(' ')
        end
      end    
end

Happy coding…

Thanks to Vikas chhabra from StackOverflow