致命错误：lipo：-extract arm64 已指定，但脂肪为：armv7k arm64_32 适用于所有 watchos pods 库

如何解决致命错误：lipo：-extract arm64 已指定，但脂肪为：armv7k arm64_32 适用于所有 watchos pods 库

Iphone 模拟器和 Apple Watch 模拟器的构建和运行一切正常 下面是一些项目设置和配置的屏幕截图：

为 arm64 构建：

使用 ios 14 为真正的 Iphone 构建：

项目配置：

开发配置文件：

WatchAppDev 配置文件：

watchExtentionDev 配置文件：

方案详情：

输出错误详情：

和我的 podfile：

 platform :ios,'10.0'

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

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

def parse_KV_file(file,separator='=')
  file_abs_path = File.expand_path(file)
  if !File.exists? file_abs_path
    return [];
  end
  generated_key_values = {}
  skip_line_start_symbols = ["#","/"]
  File.foreach(file_abs_path) do |line|
    next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
    plugin = line.split(pattern=separator)
    if plugin.length == 2
      podname = plugin[0].strip()
      path = plugin[1].strip()
      podpath = File.expand_path("#{path}",file_abs_path)
      generated_key_values[podname] = podpath
    else
      puts "Invalid plugin specification: #{line}"
    end
  end
  generated_key_values
end

target 'Runner' do
  use_frameworks!
  use_modular_headers!
  
  # Flutter Pod

  copied_flutter_dir = File.join(__dir__,'Flutter')
  copied_framework_path = File.join(copied_flutter_dir,'Flutter.framework')
  copied_podspec_path = File.join(copied_flutter_dir,'Flutter.podspec')
  unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
    # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
    # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
    # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.

    generated_xcode_build_settings_path = File.join(copied_flutter_dir,'Generated.xcconfig')
    unless File.exist?(generated_xcode_build_settings_path)
      raise "Generated.xcconfig must exist. If you're running pod install manually,make sure flutter pub get is executed first"
    end
    generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
    cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];

    unless File.exist?(copied_framework_path)
      FileUtils.cp_r(File.join(cached_framework_dir,'Flutter.framework'),copied_flutter_dir)
    end
    unless File.exist?(copied_podspec_path)
      FileUtils.cp(File.join(cached_framework_dir,'Flutter.podspec'),copied_flutter_dir)
    end
  end

  # Keep pod path relative so it can be checked into Podfile.lock.
  pod 'Flutter',:path => 'Flutter'

  # Plugin Pods

  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.
  system('rm -rf .symlinks')
  system('mkdir -p .symlinks/plugins')
  plugin_pods = parse_KV_file('../.flutter-plugins')
  plugin_pods.each do |name,path|
    symlink = File.join('.symlinks','plugins',name)
    File.symlink(path,symlink)
    pod name,:path => File.join(symlink,'ios')
  end
end

# Prevent Cocoapods from embedding a second Flutter framework and causing an error with the new Xcode build system.
install! 'cocoapods',:disable_input_output_paths => true

def watch_pods
  pod 'Alamofire','~> 4.8.2'
  pod 'AlamofireObjectMapper','~> 5.2.1'
  pod 'SwiftyJSON','~> 5.0.0'
  pod 'EMTLoadingIndicator','~> 4.0.0'
end
target 'MNO Watch' do
    platform :watchos,'3.0'
    use_frameworks!
    use_modular_headers!
    watch_pods
end
target 'MNO Watch Extension' do
    platform :watchos,'3.0'
    use_frameworks!
    use_modular_headers!
    watch_pods
end

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

解决方法

问题来自于 Flutter 引擎 要解决此问题，只需将 Flutter Channel 更改为 Beta ， 有关它的更多信息：Flutter Issue Link

我会把我的问题留在这里，也许它可以挽救某人的一天