使用版本：Xcode 10-beta版
之前xcode 9一直使用正常，今天私有的RepoSpec更新了WeChat支付的功能后，就遇到了这个问题，具体问题详情如下：
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:-1: Multiple commands produce '/Users/xx/Library/Developer/Xcode/DerivedData/xx-ddezoapfwmtmspafxwnoqjxkmfny/Build/Products/Debug-iphoneos/xx.app/Info.plist':
- Target 'xx' (project 'IntelCab') has copy command from '/Users/xx/Desktop/Project/TiKa/master/xx/IntelCab/SupportingFiles/Info.plist' to '/Users/xx/Library/Developer/Xcode/DerivedData/xx-ddezoapfwmtmspafxwnoqjxkmfny/Build/Products/Debug-iphoneos/xx.app/Info.plist'
- Target 'xx' (project 'xx') has process command with output '/Users/xx/Library/Developer/Xcode/DerivedData/xx-ddezoapfwmtmspafxwnoqjxkmfny/Build/Products/Debug-iphoneos/xx.app/Info.plist'
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解决方法
In Xcode, go to File -> Project/Workspace settings.
-> Build System 选择 Legacy Build System
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