ios 12 xcode10 新升级的编译报错libstdc++.6.0.9 Multiple commands produce

 

问题一

编译报错

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:-1: Multiple commands produce '/Users/duning/Library/Developer/Xcode/DerivedData/XGB-bvlwqwfpzltpeyarupiguxtqzrdn/Build/Products/Debug-iphonesimulator/XGB.app/README.txt':

 

 

 

 

解决办法

File > Workspace Settings > Build System > Legacy Build System

 

 

 

 

 

问题二

 

编译报找不到

libstdc++.6.0.9.tbd

 

 

解决办法

从老版本xcode拷贝库放到这两个路径

 

或者点这个链接下载

链接：https://pan.baidu.com/s/1PUWpSL-SzSpnTmjvWonyGQ 密码：R276  解压

 

 

 

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

 

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

 

 

 

 

问题三

 

 

 

如果报

iPhone has denied the launch request

 

点击链接下载xcode 9  等稳定再升10

 https://developer.apple.com/download/more/