In IOS development, there is an error: Apple mach-o linker error

Small make up in a small demo letter about ring, ring of import letter SDK (EaseMobSDK), the connection of the error, as shown in the figure below:

solution is in general, the following figure, respectively, in the absence of label arrow to add compiler needs. M files and the necessary framework:

and the small make up the problem here is not more than compile files and framework problem, the solution is,

in the third arrow to add: -obJC, and then you just recompile.

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