CocoaPod出现“target overrides the `OTHER_LDFLAGS`……的解决方案

今天在项目中引入AFNetworking。
Podfile的内容

platform :ios, '7.0'
pod "AFNetworking", "~> 2.0"

出现了一个错误

[!] The `AllBlue [Debug]` target overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Target Support Files/Pods/Pods.debug.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

[!] The `AllBlue [AutoDebug]` target overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Target Support Files/Pods/Pods.autodebug.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

[!] The `AllBlue [Release]` target overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Target Support Files/Pods/Pods.release.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

[!] The `AllBlue [AutoRelease]` target overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Target Support Files/Pods/Pods.autorelease.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

大衣就是target的设置覆盖了 pod的设置。
这个警告会导致再代码编译的时候出现错误
library not found for -lPods
解决方法：
在Build Settings -> Other linker flags 中添加$(inherited)

添加完成之后运行

pod update

Update all pods
Updating local specs repositories
Analyzing dependencies
Downloading dependencies
Using AFNetworking (2.6.3)

警告消失!!!