iOS library not found for -lstdc

如果遇到这个问题可以下载libstdc++.6.0.9.tbd、libstdc++.6.tbd 文件
https://github.com/Cui-y/Libstdc-.6.0.9-files

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/

Put tdb copy to the path:

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