React Native执行pod install报错：undefined method `build_type'

问题 #

执行pod install时触发报错：

[!]Invalid Podfile file: undefined method `build_type' for #<Pod::Podfile::TargetDefinition label=Pods-flProject>

对应的Podfile内容：

require_relative '../node_modules/react-native/scripts/react_native_pods'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'


platform :ios, min_ios_version_supported
prepare_react_native_project!

# If you are using a `react-native-flipper` your iOS build will fail when `NO_FLIPPER=1` is set.
# because `react-native-flipper` depends on (FlipperKit,...) that will be excluded
#
# To fix this you can also exclude `react-native-flipper` using a `react-native.config.js`
# ```js
# module.exports = {
#   dependencies: {
#     ...(process.env.NO_FLIPPER ? { 'react-native-flipper': { platforms: { ios: null } } } : {}),
# ```
flipper_config = ENV['NO_FLIPPER'] == "1" ? FlipperConfiguration.disabled : FlipperConfiguration.enabled

linkage = ENV['USE_FRAMEWORKS']
if linkage != nil
  Pod::UI.puts "Configuring Pod with #{linkage}ally linked Frameworks".green
  use_frameworks! :linkage => linkage.to_sym
end

install! 'cocoapods', :deterministic_uuids => true
target 'flProject' do
  config = use_native_modules!

  # Flags change depending on the env values.
  flags = get_default_flags()

  use_react_native!(
    :path => config[:reactNativePath],
    # Hermes is now enabled by default. Disable by setting this flag to false.
    # Upcoming versions of React Native may rely on get_default_flags(), but
    # we make it explicit here to aid in the React Native upgrade process.
    :hermes_enabled => flags[:hermes_enabled],
    :fabric_enabled => flags[:fabric_enabled],
    # Enables Flipper.
    #
    # Note that if you have use_frameworks! enabled, Flipper will not work and
    # you should disable the next line.
    :flipper_configuration => flipper_config,
    # An absolute path to your application root.
    :app_path => "#{Pod::Config.instance.installation_root}/.."
  )

  target 'flProjectTests' do
    inherit! :complete
    # Pods for testing
  end

  post_install do |installer|
    react_native_post_install(
      installer,
      # Set `mac_catalyst_enabled` to `true` in order to apply patches
      # necessary for Mac Catalyst builds
      :mac_catalyst_enabled => false
    )
    __apply_Xcode_12_5_M1_post_install_workaround(installer)
  end
end

解决方案 #

1. 升级CocoaPods版本 #

这个报错核心原因是CocoaPods版本与当前React Native版本不兼容，旧版CocoaPods不支持RN Podfile中用到的build_type相关API。

• 查看React Native官方文档，确认当前RN版本对应的推荐CocoaPods版本（比如RN 0.70+建议使用1.11.3及以上版本）
• 执行升级命令：

  # 通过gem升级
  sudo gem install cocoapods
  # 若用brew安装则执行
  brew upgrade cocoapods
  

2. 移除过时的M1兼容脚本 #

__apply_Xcode_12_5_M1_post_install_workaround是针对旧版Xcode和M1芯片的临时补丁，新版本RN和CocoaPods已原生支持M1，删除post_install中的这一行：

# 删掉此行
# __apply_Xcode_12_5_M1_post_install_workaround(installer)

3. 清理缓存后重新安装 #

• 删除本地Pod缓存和配置文件：

  rm -rf Podfile.lock Pods
  pod cache clean --all
  

• 重新执行安装：

  pod install
  

内容的提问来源于stack exchange，提问作者BAN LUO