CocoaPods did not set the base configuration of your project 问题解决方案

今天在使用pod install的时候，出现了

[!] CocoaPods did not set the base configuration of your project because your project already has a custom config set. In order for CocoaPods integration to work at all, please either set the base configurations of the target `项目名` to `Pods/Target Support Files/Pods-项目名/Pods-项目名.release.xcconfig` or include the `Pods/Target Support Files/Pods-项目名/Pods-项目名.release.xcconfig` in your build configuration.

解决方案如下：

把第3步箭头所指的地方改成如图所示的None即可。

我出现这问题是由之前的单个target改为了多个target，pod的目录结构发生了变化，此时旧的配置项仍然存在，影响了新的。