ld: symbol(s) not found for architecture x86_64

在iOS设备上运行Flutter项目时出现:
ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)，这是混编C++导致的，需要Xcode中的项目配置如下：

1.Build Setting->Other Link Flags添加-lc++
2.Build Phases->Link Binary With Libraries添加libc++.tbd包

然后执行

flutter clean
flutter run

就可以看到项目能跑起来了。