Xcode10填坑

升级Xcode10遇到的坑

1.libstdc++.6.0.9.tbd缺失

在Xcode10中取消了这个库，所以当第三库使用到的时候就会报错。
解决办法：
找一个Xcode10以下的版本，进入目录中，把libstdc++.6.0.9.tbd库拿出来放到Xcode10中对应的目录下。
真机目录：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/
模拟器目录：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/
libstdc++.6.0.9.tbd百度云链接：链接:https://pan.baidu.com/s/1qv8GdQbxL78FTSTNwsr29g 密码:9jgi

2.info.plist编译报错

Showing Recent Messages
:-1: Multiple commands produce '/Users/mc/Library/Developer/Xcode/DerivedData/xxx-cjlewfnngpnmytdofopeeyggyikv/Build/Products/Debug-iphonesimulator/xxx.app/Info.plist':

1. Target 'xxx' (project 'xxx') has copy command from 'xxx/Info.plist' to '/Users/mc/Library/Developer/Xcode/DerivedData/xxx/Build/Products/xxx.app/Info.plist'

2. Target 'xxx' (project xxx') has process command with output '/Users/mc/Library/Developer/Xcode/DerivedData/xxx/Build/Products/xxx.app/Info.plist'
   这是因为项目中存在了多个info.plist文件导致报错
   解决办法：

   
   
   info.plist编译报错
   
   

   把info.plist都删除掉即可

3.#import <>崩溃问题，不提示问题

更改编译方式Xcode --> File --> Workspace Setttings --> Build System --> Legacy Build System

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