今天需要对之前的老项目做升级，没想到用新版Xcode打开后，运行报错。这个错误大家肯定也经常遇到。先来看下错误，提示存在多个Info.plist文件：
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:-1: Multiple commands produce ‘/Users/xxxx/Library/Developer/Xcode/DerivedData/ProjectB-bepvfbppjiashecuxsdrpxnyuwat/Build/Products/Debug-iphonesimulator/ProjectB.app/Info.plist’:
1) Target ‘ProjectB’ (project ‘ProjectB’) has copy command from ‘/Users/xxxx/Desktop/Project/ProjectB/ProjectB/Library/Masonry/Info.plist’ to ‘/Users/xxxx/Library/Developer/Xcode/DerivedData/ProjectB-bepvfbppjiashecuxsdrpxnyuwat/Build/Products/Debug-iphonesimulator/ProjectB.app/Info.plist’
2) Target ‘ProjectB’ (project ‘ProjectB’) has process command with output ‘/Users/xxxx/Library/Developer/Xcode/DerivedData/ProjectB-bepvfbppjiashecuxsdrpxnyuwat/Build/Products/Debug-iphonesimulator/ProjectB.app/Info.plist’
解决办法：
1、Xcode – File – Project Settings，修改Build System为：Legacy Build System，然后点击Done。（如果编辑还是这个错误，请尝试clean一下项目）
2、Xcode中点击项目，Build Phases，搜索Info.plist，将出现在Copy Bundle Resource中的Info.plist移除掉。
