如果您在现有项目中添加了自定义构建配置，Cocoapods将对此提出抱怨。

Cocoapods会自动在Pods/Target Support files /<build_target>目录下创建xcconfig文件，命名模式为Pods-<build_target>.<build_config>.xcconfig。

只要确保在Xcode中手动将这些文件添加到你的项目中(在Pods目录下，但不是在Pods项目中!)一旦包含了这些文件，在Xcode中选择你的项目，进入“信息”选项卡，展开你的自定义配置。为自定义配置下的每个目标选择适当的xcconfig文件。

进入XCode，打开你的项目设置，在信息选项卡下，你会看到“配置”，在这里你可以设置调试和发布的配置文件。显然，您已经将这些设置为一些自定义配置，CocoaPods希望/需要您使用Pods配置。

我也遇到了同样的问题，但是在Xcode 6.1.1中-为我修复它的是将两个pod相关目标的配置文件设置更改为None，然后再次运行pod install。

通过选择项目(而不是目标)，然后选择Info选项卡，可以找到配置文件设置。

也遇到了同样的问题。它可以建立在模拟器上，但不是在我的设备上。没有一个答案能帮我解决这个问题。以下是我将一些答案拼凑在一起的方法:

Changed my pods file to use a specific target: target :MyProject do pod 'AWSCognitoSync' pod 'Facebook-iOS-SDK' end Ran pod install That gives an error: [!] 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 `MyProject` to `Pods/Target Support Files/Pods-MyProject/Pods-MyProject.debug.xcconfig` or include the `Pods/Target Support Files/Pods-MyProject/Pods-MyProject.debug.xcconfig` in your build configuration. Go Project settings and click on Info tab. There will be an error where it cannot find the Configuration file. Set it to "None" for Debug and Release. Run pod install yet again Clean and build. This works.

Sorry my previous answer was unclear. This was just one of many errors i've got while trying to set up Cloud Firestore, so this answer is specific for that situation. In order to solve this error and make firebase work, eventually, you have to follow all of the steps from this page: https://firebase.flutter.dev/docs/firestore/overview/ . If you are having problems with generating the 'firebase_options.dart' file, then you need to follow the steps on this page: https://firebase.google.com/docs/cli#mac-linux-auto-script . The last step is optional, but it reduces build time, and I really don't know how or why, but it made some of other errors also disappear... Step 4. Improve iOS & macOS build times, from this page https://firebase.flutter.dev/docs/firestore/overview/. And off course, don't forget to add dependencies in pubspec.yaml: https://pub.dev/packages/firebase_core/install . There is also a great comment here about using Firebase.initializeApp() : https://stackoverflow.com/a/63492262/17626190

这发生在我身上是因为我已经有了Pod配置。我是iOS开发的新手，在搜索安装Alamofire + SwiftyJSON的说明时，无意中安装了不止一次库。对我来说，起作用的是:在“Pods”项目的“目标支持文件”文件夹中，我选择了两个正确的。xcconfig文件，并将它们拖到我的应用程序项目的“Pods”文件夹中。这允许在基本配置上选择正确的配置文件。

但是，如果我再次运行“pod install”，警告将更改为先前的.xcconfig文件。我试图从主项目中删除文件和旧的框架，但当我再次运行前面的命令时，给了我同样的警告，并在我的应用程序项目的“Pods”文件夹下创建文件“Pods.framework”。我忽略了它，尽管有两个框架，但它似乎运行正常。我不知道这是否正确，如果存在解决方案，它将受到欢迎。