在Xcode 10.1（10B61）中创建空白新项目时，添加空白“ iMessage”扩展目标，并使用firebase添加以下pod文件：
# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'
target 'iMessage' do
# Comment the next line if you're not using Swift and don't want to use dynamic frameworks
use_frameworks!
# Pods for iMessage
pod 'FirebaseUI/Storage'
end
target 'MyProject34' do
# Comment the next line if you're not using Swift and don't want to use dynamic frameworks
use_frameworks!
# Pods for MyProject34
pod 'FirebaseUI/Phone'
end
尝试“产品/存档”时出现以下错误：
Showing Recent Messages
:-1: Multiple commands produce '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/GoogleUtilities.framework':
1) Target 'GoogleUtilities-Environment-Logger-UserDefaults' has create directory command with output '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/GoogleUtilities.framework'
2) Target 'GoogleUtilities-Environment-Logger' has create directory command with output '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/GoogleUtilities.framework'
和
Showing Recent Messages
:-1: Multiple commands produce '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/FirebaseUI.framework':
1) Target 'FirebaseUI-Storage' has create directory command with output '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/FirebaseUI.framework'
2) Target 'FirebaseUI-Auth-Phone' has create directory command with output '/Users/huty/Library/Developer/Xcode/DerivedData/MyProject34-axmyqgtwgzajkqcujpfchvgqnoiz/Build/Intermediates.noindex/ArchiveIntermediates/MyProject34/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/FirebaseUI.framework'
我应该如何解决该问题？（我正在处理的项目更加复杂，但是我将错误缩小到了上面的项目）
这是https://github.com/CocoaPods/CocoaPods/issues/8206，其根本原因是https://openradar.appspot.com/radar?id=5038526135533568
解决方法是使用旧的Xcode构建系统，或确保所有目标都具有相同的CocoaPod子规格子集。在这种情况下，我相信可以通过同时添加pod GoogleUtilities/UserDefaults两个目标来实现。
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我来说两句