【Xcode】Xcode 9 升級到 Xcode10 時遇到的問題

1，報文件重複

Xcode File--> Workspace Settings --> Build System 修改爲Legacy Build System (默認是New Build System)

2,找不到庫

蘋果在XCode10和iOS12中移除了libstdc++庫，而使用libc++庫;

臨時解決方案：拷貝缺失的 libstdc++、libstdc++.6、libstdc++6.0.9到對應目錄即可;

For Device

Put tbd copy to the path:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/

For Simulator

Put dylib copy to the path:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

注意，此處有變動：

Xcdoe11及以上:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

Xcdoe11以下:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

Put tdb copy to the path:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/