title: Flutter :- Failed to build iOS app using flutter run iOS command . ** BUILD FAILED **
body: <p>Flutter : Log Details => Xcode build done. Failed to build iOS app, can anyone help me out for solving ios related errors while I am running flutter run iOS...</p>
  
  <pre><code> Xcode build done.                                           21.9s
      Failed to build iOS app
      Error output from Xcode build:
      ↳
          ** BUILD FAILED **
      Xcode's output:
      ↳
          === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
          ld: warning: Could not find auto-linked library 'swiftFoundation'
          ld: warning: Could not find auto-linked library 'swiftMetal'
          ld: warning: Could not find auto-linked library 'swiftDarwin'
          ld: warning: Could not find auto-linked library 'swiftUIKit'
          ld: warning: Could not find auto-linked library 'swiftCoreFoundation'
          ld: warning: Could not find auto-linked library 'swiftQuartzCore'
          ld: warning: Could not find auto-linked library 'swiftCore'
          ld: warning: Could not find auto-linked library 'swiftCoreGraphics'
          ld: warning: Could not find auto-linked library 'swiftObjectiveC'
          ld: warning: Could not find auto-linked library 'swiftDispatch'
          ld: warning: Could not find auto-linked library 'swiftCoreMedia'
          ld: warning: Could not find auto-linked library 'swiftSwiftOnoneSupport'
          ld: warning: Could not find auto-linked library 'swiftCoreImage'
          ld: warning: Could not find auto-linked library 'swiftCoreAudio'
          Undefined symbols for architecture x86_64:
  </code></pre>
  
  <p><strong>flutter doctor -v</strong></p>
  
  <blockquote>
    <p>[✓] Flutter (Channel stable, v1.9.1+hotfix.6, on Mac OS X 10.14.6
    18G87, locale en-IN)
        • Flutter version 1.9.1+hotfix.6 at /Users/btlmac/www/flutter
        • Framework revision 68587a0916 (10 weeks ago), 2019-09-13 19:46:58 -0700
        • Engine revision b863200c37
        • Dart version 2.5.0</p>
    
    <p>[✓] Android toolchain - develop for Android devices (Android SDK
    version 28.0.3)
        • Android SDK at /Users/btlmac/Library/Android/sdk
        • Android NDK location not configured (optional; useful for native profiling support)
        • Platform android-29, build-tools 28.0.3
        • ANDROID_HOME = /Users/btlmac/Library/Android/sdk
        • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
        • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
        • All Android licenses accepted.</p>
    
    <p>[✓] Xcode - develop for iOS and macOS (Xcode 10.2.1)
        • Xcode at /Applications/Xcode.app/Contents/Developer
        • Xcode 10.2.1, Build version 10E1001
        • CocoaPods version 1.8.4</p>
    
    <p>[✓] Android Studio (version 3.1)
        • Android Studio at /Applications/Android Studio.app/Contents
        • Flutter plugin version 29.0.1
        • Dart plugin version 173.4700
        • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)</p>
    
    <p>[✓] VS Code (version 1.40.1)
        • VS Code at /Applications/Visual Studio Code.app/Contents
        • Flutter extension version 3.6.0</p>
    
    <p>[✓] Connected device (2 available)
        • Lenovo X3a40 • 5453f602                             • android-arm64 • Android 6.0.1 (API 23)
        • iPhone X     • A70C38B1-AE7B-4EF5-B570-8872C81C147B • ios           • com.apple.CoreSimulator.SimRuntime.iOS-12-2 (simulator)</p>
    
    <p>• No issues found!</p>
  </blockquote>