iOS(xcode) 加入openssl的方法

1.将include文件拖入工程根目录中

2.将libcrypto.a 和 libssl.a拖入工程的Frameworks中
3. 在Library Search Paths中添加$(inherited)  和$(SRCROOT)
4.在Header Search Paths中添加include  (直接输入include即可，不需要加上SRCROOT类似的引用路径)

5.Always Search User Path设置为Yes

如果是在iOS手机端开启MQTTKit（libmosquitto）中要开启加密，需要到build settings--->preprocessor中添加一个WITH_TLS即可

Set a preprocessor flag in XCode "WITH_TLS" by clicking the project in XCode then click the target then click build settingsSearch for preprocessor macros and add "WITH_TLS" to debug and release

如果提示：ld: ‘/Users/**/Framework/SDKs/PolymerPay/Library/mobStat/lib**SDK.a(**ForSDK.o)’does not contain bitcode. You must rebuild it with bitcode enabled (Xcodesetting ENABLE_BITCODE), obtain an updated library from the vendor, or disablebitcode for this target. for architecture arm64

请前往 build settings --->enable bitcode 设置为NO即可