1. The reference method of the 'string' file not found library has changed.
In the Build Setting of the cocos2dx project, the C++ Standard Library has been changed to libc++
Change the C++ Standard Library to libc++ in the game project Build Setting
2.Use of '@import' when C++ modules are disabled AppController.mm refers to the pod library and reports an error
Enable Moudles in build settings, change to yes
Change AppController.mm to AppController.m
If there is C++ code in AppControll.mm, it is recommended to write a separate .m file to @import
3.does not contain bitcode. bitcode does not support
Two projects set Enable Bitcode to No
4. Execute the latest ios mobile phone and report an error. The latest is arm64
Modify VALID_ARCHS in User-Defined under Build Settings, add arm64