MACOSX_DEPLOYMENT_TARGET 不断恢复为旧值

Question

我正在尝试构建一个针对 macOS 的 Flutter 应用程序。添加一些依赖项（例如 just_audio）后，我会收到有关MACOSX_DEPLOYMENT_TARGET在各个位置设置为各种值（需要更改为其他值）的警告。

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因此，我打开 Xcode 并按照说明仔细设置值。之后，应用程序成功编译，没有警告，并按预期执行一次、两次，甚至三次，但不可避免地会返回警告。当我返回 Xcode 时，我发现所有值都恢复到之前的状态。我尝试了不同的目标版本，从 10.15 到 13.1（当前安装），但警告最终总是会出现。

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我是否错过了重要的一步？我对软件开发并不陌生，但对 macOS 和 Xcode 完全陌生。

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以下是不断出现的错误的示例：

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Launching lib/main.dart on macOS in debug mode...\n--- xcodebuild: WARNING: Using the first of multiple matching destinations:\n{ platform:macOS, arch:arm64, id:00006000-000210D03EB8401E }\n{ platform:macOS, arch:x86_64, id:00006000-000210D03EB8401E }\n/Users/foo/projects/just_audio_background_test/macos/Pods/Pods.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.6, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'FMDB' from project 'Pods')\n/Users/foo/projects/just_audio_background_test/macos/Pods/Pods.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.11, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'sqflite' from project 'Pods')\n/Users/foo/projects/just_audio_background_test/macos/Pods/Pods.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.11, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'audio_session' from project 'Pods')\n/Users/foo/projects/just_audio_background_test/macos/Pods/Pods.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.12.2, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'audio_service' from project 'Pods')\n/Users/foo/projects/just_audio_background_test/macos/Runner.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.11, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'Flutter Assemble' from project 'Runner')\n/Users/foo/projects/just_audio_background_test/macos/Pods/Pods.xcodeproj: warning: The macOS deployment target 'MACOSX_DEPLOYMENT_TARGET' is set to 10.11, but the range of supported deployment target versions is 10.13 to 13.1.99. (in target 'FlutterMacOS' from project 'Pods')\n

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这是我的flutter doctor输出：

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[\xe2\x9c\x93] Flutter (Channel stable, 3.3.10, on macOS 13.1 22C65 darwin-arm, locale en-TW)\n[\xe2\x9c\x93] Android toolchain - develop for Android devices (Android SDK version 33.0.0)\n[\xe2\x9c\x93] Xcode - develop for iOS and macOS (Xcode 14.2)\n[\xe2\x9c\x93] Chrome - develop for the web\n[\xe2\x9c\x93] Android Studio (version 2021.3)\n[\xe2\x9c\x93] VS Code (version 1.74.1)\n[\xe2\x9c\x93] Connected device (2 available)\n[\xe2\x9c\x93] HTTP Host Availability\n

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Answer 1

原因是pod install当您尝试运行或构建时，flutter 就会执行。因此，请像下面这样编辑您的post_install内容Podfile。添加的代码将在 flutter 执行时强制部署目标为 10.13 pod install。

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_macos_build_settings(target)
    target.build_configurations.each do |config|
      config.build_settings['MACOSX_DEPLOYMENT_TARGET'] = '10.13'
    end
  end
end

完整示例如下

platform :osx, '10.13'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,
}

def flutter_root
  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'ephemeral', 'Flutter-Generated.xcconfig'), __FILE__)
  unless File.exist?(generated_xcode_build_settings_path)
    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure \"flutter pub get\" is executed first"
  end

  File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
  end
  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Flutter-Generated.xcconfig, then run \"flutter pub get\""
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_macos_podfile_setup

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  flutter_install_all_macos_pods File.dirname(File.realpath(__FILE__))
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_macos_build_settings(target)
    target.build_configurations.each do |config|
      config.build_settings['MACOSX_DEPLOYMENT_TARGET'] = '10.13'
    end
  end
end