今天从svn下载下来的工程运行pod install安装后遇到的问题。

问题1

Multiple commands produce '/Users/hml/Library/Developer/Xcode/DerivedData/ByTalk-ggqcplakcssjghegvezbxqgzgjzp/Build/Products/Debug-iphoneos/ByTalk.app/Info.plist':

1. Target 'ByTalk' (project 'ByTalk') has copy command from '/Users/hml/Desktop/SVN_Project/ByTalk/ByTalkSDK/Info.plist' to '/Users/hml/Library/Developer/Xcode/DerivedData/ByTalk-ggqcplakcssjghegvezbxqgzgjzp/Build/Products/Debug-iphoneos/ByTalk.app/Info.plist'
2. Target 'ByTalk' (project 'ByTalk') has process command with output '/Users/hml/Library/Developer/Xcode/DerivedData/ByTalk-ggqcplakcssjghegvezbxqgzgjzp/Build/Products/Debug-iphoneos/ByTalk.app/Info.plist'

解决办法，找到重复数据删除，参考https://stackoverflow.com/questions/50718018/xcode-10-error-multiple-commands-produce

解决方法1.png

问题2

Use of undeclared identifier 'MJExtensionSemaphoreWait' 问题2.png

通过查找，头文件#import "BTFMJExtensionConst.h" 中已经包含MJExtensionSemaphoreWait，
解决方法：通过修改头文件位置问题改好。

解决方法2.png

问题3

ld: framework not found Reachability
clang:error: linker commmand failed with exit code 1 (user -v to see invacation)

问题3.png

解决方法：
target->Build Settings->Other Linker Flags 中找到出错的文件删除

解决方法3.png

问题4

pod install 时一直出错
LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to GitHub.com:443

问题4.png

解决方法：
网络问题，网络超时，pod install很多次，把所有库文件都下载下来。