您是否尝试过以下Podfile：

Have you tried a podfile like:

platform :ios, '9.0'

target 'ABC' do
  use_frameworks!
  workspace 'ABC'
  project 'ABC'

  pod 'Firebase'
  # ...
end

target 'XYZ' do
    use_frameworks!
    workspace 'ABC'
    project 'XYZ'

    # pods for the framework
    pod 'Firebase'
    # ...
end

？