ios - 为 CocoaPods 的 pod 设置部署目标

Question

我使用 CocoaPods 来管理项目中的依赖项。我写了 Podfile:

target 'MyApp' do
  platform :ios, '8.0'
  # Uncomment this line if you're using Swift or would like to use dynamic frameworks
  #use_frameworks!

  # Pods for MyApp
  pod 'KeepLayout', :git => 'https://github.com/iMartinKiss/KeepLayout', :tag => 'v1.6.0'
  pod 'EasyMapping'

  target 'MyAppTests' do
    inherit! :search_paths
    # Pods for testing
  end

  target 'MyAppUITests' do
    inherit! :search_paths
    # Pods for testing
  end

end

此文件适用于 CocoaPods 0.x，但在我更新到 CocoaPods 1.0 后无法编译项目。在我跑完之后

pod update 

我无法编译我的项目并出现错误:

/Users/<...>/Pods/KeepLayout/Sources/KeepAttribute.m:195:1: Cannot synthesize weak property because the current deployment target does not support weak references

我看到每个库都是用不同的部署目标构建的。例如，KeepLayout 是使用 4.3 部署目标构建的。

我如何确定每个 pod 依赖项的构建目标？

Answer 1

虽然 CocoaPods 的某些开发版本(以及 1.0 之前的版本)可能已将项目的部署目标向下传播到 pod，但这是 no longer the case in 1.0 .要解决此问题，the current developer recommends使用安装后 Hook 。

这是一种蛮力方法，可以为生成的 Pod 项目中的每个 Pod 强制执行硬编码部署目标。将此粘贴到 Podfile 的end:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '9.2'
    end
  end
end