https://awhisper.github.io/2018/06/08/libstdc-inxcode10ios12/
a. 將 libstdc++_sim.zip 解壓艾杏,放到目錄
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/
b. 將 libstdc++.dylib_sim.zip 解壓,放到目錄
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/