Set deployment target for CocoaPods's pod

问题:

I use CocoaPods to manage dependencies in my project. I've written 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

This file works well with CocoaPods 0.x but I can't compile project after I've updated to CocoaPods 1.0. After I've run

pod update 

I can't compile my project with error:

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

I've seen that every library is builded with different deployment target. For example KeepLayout is builded with 4.3 deployment target.

How I can determine build target for every pod dependency?

回答1:

While some development versions of CocoaPods (as well as pre-1.0 versions) may have propagated the deployment target of the project down to the pods, this is no longer the case in 1.0. To work around this, the current developer recommends using a post-install hook.

Here's a brute force approach to force a hard-coded deployment target for every pod in the generated Pods project. Paste this at the end of your Podfile:

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

回答2:

Since the "pods" project has set deployment target, you just need to remove the deployment target of each build target. Append this at the end of your Podfile

post_install do |lib|
    lib.pods_project.targets.each do |target|
        target.build_configurations.each do |config|
            config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
        end
    end
end

Inspired by the github post and Alex Nauda's answer.

回答3:

1) Search for IPHONEOS_DEPLOYMENT_TARGET

2) Change the iOS Deployment Target