<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">Follow the steps to integrate Google Sign In to iOS app from <a href="https://github.com/flutter/plugins/tree/master/packages/google_sign_in">here</a></p>
<h2 dir="auto">Logs</h2>
<p dir="auto"><code class="notranslate">flutter run</code> output</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="➜  flutter_todo flutter run -d iP8+P
Launching lib/main.dart on iP8+P in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode project: S29F39HXPA
Running pod install...                                1.3s
Running Xcode clean...                                1.4s
Starting Xcode build...
 ├─Building Dart code...                       3.4s
 ├─Assembling Flutter resources...             4.1s
 └─Compiling, linking and signing...           0.7s
Xcode build done                                     15.5s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **

Xcode's output:
↳
    === BUILD TARGET google_sign_in OF PROJECT Pods WITH CONFIGURATION Debug ===
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:111:41: warning: 'UIApplicationOpenURLOptionsSourceApplicationKey' is only available on iOS 9.0 or newer [-Wunguarded-availability]
      NSString *sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey];
                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'UIKit' imported from /Users/kalehv/dev/flutter_todo/ios/Pods/Target Support Files/google_sign_in/google_sign_in-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:534:51: note: 'UIApplicationOpenURLOptionsSourceApplicationKey' has been explicitly marked partial here
    UIKIT_EXTERN UIApplicationOpenURLOptionsKey const UIApplicationOpenURLOptionsSourceApplicationKey NS_AVAILABLE_IOS(9_0);   // value is an NSString containing the bundle ID of the originating application
                                                      ^
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:111:41: note: enclose 'UIApplicationOpenURLOptionsSourceApplicationKey' in an @available check to silence this warning
      NSString *sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey];
                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:112:27: warning: 'UIApplicationOpenURLOptionsAnnotationKey' is only available on iOS 9.0 or newer [-Wunguarded-availability]
      id annotation = options[UIApplicationOpenURLOptionsAnnotationKey];
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'UIKit' imported from /Users/kalehv/dev/flutter_todo/ios/Pods/Target Support Files/google_sign_in/google_sign_in-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:535:51: note: 'UIApplicationOpenURLOptionsAnnotationKey' has been explicitly marked partial here
    UIKIT_EXTERN UIApplicationOpenURLOptionsKey const UIApplicationOpenURLOptionsAnnotationKey NS_AVAILABLE_IOS(9_0);   // value is a property-list typed object corresponding to what the originating application passed in UIDocumentInteractionController's annotation property
                                                      ^
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:112:27: note: enclose 'UIApplicationOpenURLOptionsAnnotationKey' in an @available check to silence this warning
      id annotation = options[UIApplicationOpenURLOptionsAnnotationKey];
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    2 warnings generated.
    === BUILD TARGET google_sign_in OF PROJECT Pods WITH CONFIGURATION Debug ===
    ld: warning: -undefined dynamic_lookup is deprecated on iOS
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    The use of Swift 3 @objc inference in Swift 4 mode is deprecated. Please address deprecated @objc inference warnings, test your code with “Use of deprecated Swift 3 @objc inference” logging enabled, and then disable inference by changing the &quot;Swift 3 @objc Inference&quot; build setting to &quot;Default&quot; for the &quot;Runner&quot; target.
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    /Users/kalehv/dev/flutter_todo/ios/Runner/GeneratedPluginRegistrant.m:6:9: fatal error: 'google_sign_in/GoogleSignInPlugin.h' file not found
    #import &lt;google_sign_in/GoogleSignInPlugin.h&gt;
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    1 error generated.
Could not build the precompiled application for the device.

Error launching application on iP8+P."><pre class="notranslate"><code class="notranslate">➜  flutter_todo flutter run -d iP8+P
Launching lib/main.dart on iP8+P in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode project: S29F39HXPA
Running pod install...                                1.3s
Running Xcode clean...                                1.4s
Starting Xcode build...
 ├─Building Dart code...                       3.4s
 ├─Assembling Flutter resources...             4.1s
 └─Compiling, linking and signing...           0.7s
Xcode build done                                     15.5s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **

Xcode's output:
↳
    === BUILD TARGET google_sign_in OF PROJECT Pods WITH CONFIGURATION Debug ===
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:111:41: warning: 'UIApplicationOpenURLOptionsSourceApplicationKey' is only available on iOS 9.0 or newer [-Wunguarded-availability]
      NSString *sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey];
                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'UIKit' imported from /Users/kalehv/dev/flutter_todo/ios/Pods/Target Support Files/google_sign_in/google_sign_in-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:534:51: note: 'UIApplicationOpenURLOptionsSourceApplicationKey' has been explicitly marked partial here
    UIKIT_EXTERN UIApplicationOpenURLOptionsKey const UIApplicationOpenURLOptionsSourceApplicationKey NS_AVAILABLE_IOS(9_0);   // value is an NSString containing the bundle ID of the originating application
                                                      ^
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:111:41: note: enclose 'UIApplicationOpenURLOptionsSourceApplicationKey' in an @available check to silence this warning
      NSString *sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey];
                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:112:27: warning: 'UIApplicationOpenURLOptionsAnnotationKey' is only available on iOS 9.0 or newer [-Wunguarded-availability]
      id annotation = options[UIApplicationOpenURLOptionsAnnotationKey];
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In module 'UIKit' imported from /Users/kalehv/dev/flutter_todo/ios/Pods/Target Support Files/google_sign_in/google_sign_in-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:535:51: note: 'UIApplicationOpenURLOptionsAnnotationKey' has been explicitly marked partial here
    UIKIT_EXTERN UIApplicationOpenURLOptionsKey const UIApplicationOpenURLOptionsAnnotationKey NS_AVAILABLE_IOS(9_0);   // value is a property-list typed object corresponding to what the originating application passed in UIDocumentInteractionController's annotation property
                                                      ^
    /Users/kalehv/.pub-cache/hosted/pub.dartlang.org/google_sign_in-2.1.0/ios/Classes/GoogleSignInPlugin.m:112:27: note: enclose 'UIApplicationOpenURLOptionsAnnotationKey' in an @available check to silence this warning
      id annotation = options[UIApplicationOpenURLOptionsAnnotationKey];
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    2 warnings generated.
    === BUILD TARGET google_sign_in OF PROJECT Pods WITH CONFIGURATION Debug ===
    ld: warning: -undefined dynamic_lookup is deprecated on iOS
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    The use of Swift 3 @objc inference in Swift 4 mode is deprecated. Please address deprecated @objc inference warnings, test your code with “Use of deprecated Swift 3 @objc inference” logging enabled, and then disable inference by changing the "Swift 3 @objc Inference" build setting to "Default" for the "Runner" target.
    === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
    /Users/kalehv/dev/flutter_todo/ios/Runner/GeneratedPluginRegistrant.m:6:9: fatal error: 'google_sign_in/GoogleSignInPlugin.h' file not found
    #import &lt;google_sign_in/GoogleSignInPlugin.h&gt;
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    1 error generated.
Could not build the precompiled application for the device.

Error launching application on iP8+P.
</code></pre></div>
<hr>
<p dir="auto"><code class="notranslate">flutter analyze</code> output</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="➜  flutter_todo flutter analyze
Analyzing /Users/kalehv/dev/flutter_todo...
No issues found!
Ran in 4.9s"><pre class="notranslate"><code class="notranslate">➜  flutter_todo flutter analyze
Analyzing /Users/kalehv/dev/flutter_todo...
No issues found!
Ran in 4.9s
</code></pre></div>
<h2 dir="auto">Flutter Doctor</h2>
<p dir="auto"><code class="notranslate">flutter doctor -v</code> output (Device IDs redacted)<br>
Note - I am not using IntelliJ IDEA. I am using Android Studio instead.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="➜  flutter_todo flutter doctor -v
[✓] Flutter (on Mac OS X 10.13.3 17D102, locale en-US, channel beta)
    • Flutter version 0.1.4 at /Users/kalehv/Library/flutter
    • Framework revision f914e701c5 (8 days ago), 2018-02-19 21:12:17 +0000
    • Engine revision 13cf22c284
    • Dart version 2.0.0-dev.27.0-flutter-0d5cf900b0

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/kalehv/Library/Android/sdk
    • Android NDK at /Users/kalehv/Library/Android/sdk/ndk-bundle
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = /Users/kalehv/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-915-b08)

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 1.9.2
    • CocoaPods version 1.4.0

[✓] Android Studio
    • Android Studio at /Applications/Android Studio 3.0 Preview.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[!] IntelliJ IDEA Community Edition (version 2017.3.4)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.20.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.9.0

[✓] Connected devices
    • iP8+P    • XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX • ios • iOS 11.2.5
    • iPhone X • XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX     • ios • iOS 11.2 (simulator)

! Doctor found issues in 1 category."><pre class="notranslate"><code class="notranslate">➜  flutter_todo flutter doctor -v
[✓] Flutter (on Mac OS X 10.13.3 17D102, locale en-US, channel beta)
    • Flutter version 0.1.4 at /Users/kalehv/Library/flutter
    • Framework revision f914e701c5 (8 days ago), 2018-02-19 21:12:17 +0000
    • Engine revision 13cf22c284
    • Dart version 2.0.0-dev.27.0-flutter-0d5cf900b0

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/kalehv/Library/Android/sdk
    • Android NDK at /Users/kalehv/Library/Android/sdk/ndk-bundle
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = /Users/kalehv/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-915-b08)

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 1.9.2
    • CocoaPods version 1.4.0

[✓] Android Studio
    • Android Studio at /Applications/Android Studio 3.0 Preview.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[!] IntelliJ IDEA Community Edition (version 2017.3.4)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.20.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.9.0

[✓] Connected devices
    • iP8+P    • XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX • ios • iOS 11.2.5
    • iPhone X • XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX     • ios • iOS 11.2 (simulator)

! Doctor found issues in 1 category.
</code></pre></div>
<p dir="auto">As you can see, for some reason, I am not able to add any dependency package and run the app for iOS. This issue is not specific to only google_sign_in.</p>
<p dir="auto">Working fine on Android.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/588703/36778576-f59e0620-1c21-11e8-96e4-6735a14a7b48.png"><img width="1920" alt="screen shot 2018-02-28 at 12 17 36 am" src="https://user-images.githubusercontent.com/588703/36778576-f59e0620-1c21-11e8-96e4-6735a14a7b48.png" style="max-width: 100%;"></a></p>
<h2 dir="auto">Steps to Reproduce</h2>
<div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="set -x

mkdir -p Made_Podfiles_use_symlinks_to_local_pods_NOT_WORKING/
pushd  Made_Podfiles_use_symlinks_to_local_pods_NOT_WORKING/

flutter create -t plugin -i swift --org com.failed failed &gt; /dev/null
pushd failed/example
flutter build ios --debug 
popd

flutter create -t plugin -i swift --org com.success success &gt; /dev/null
pushd success/example
wget -q https://raw.githubusercontent.com/mravn-google/flutter/3723ec0383f79420486bb4ee5acf06ebd190b5cf/packages/flutter_tools/templates/cocoapods/Podfile-swift
cp Podfile-swift ios/Podfile
flutter build ios --debug
popd

popd"><pre class="notranslate"><span class="pl-c1">set</span> -x

mkdir -p Made_Podfiles_use_symlinks_to_local_pods_NOT_WORKING/
<span class="pl-c1">pushd</span>  Made_Podfiles_use_symlinks_to_local_pods_NOT_WORKING/

flutter create -t plugin -i swift --org com.failed failed <span class="pl-k">&gt;</span> /dev/null
<span class="pl-c1">pushd</span> failed/example
flutter build ios --debug 
<span class="pl-c1">popd</span>

flutter create -t plugin -i swift --org com.success success <span class="pl-k">&gt;</span> /dev/null
<span class="pl-c1">pushd</span> success/example
wget -q https://raw.githubusercontent.com/mravn-google/flutter/3723ec0383f79420486bb4ee5acf06ebd190b5cf/packages/flutter_tools/templates/cocoapods/Podfile-swift
cp Podfile-swift ios/Podfile
flutter build ios --debug
<span class="pl-c1">popd</span>

<span class="pl-c1">popd</span></pre></div>
<h2 dir="auto">Flutter Doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="➜  ~ flutter doctor -v
[✓] Flutter (Channel master, v0.1.8-pre.43, on Mac OS X 10.13.3 17D102, locale en-KR)
    • Flutter version 0.1.8-pre.43 at /Users/?????/flutter
    • Framework revision fe334e1652 (3 hours ago), 2018-03-02 17:54:51 -0800
    • Engine revision 97b22348c8
    • Dart version 2.0.0-dev.32.0.flutter-ee15c8eb68

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/?????/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = /Users/?????/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-915-b08)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 1.9.2
    • CocoaPods version 1.3.1

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] IntelliJ IDEA Community Edition (version 2017.3.4)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 22.1.2
    • Dart plugin version 173.4548.30

[✓] VS Code
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.8.0

[✓] Connected devices (1 available)
    • ????????????????????????????????????? • ios • iOS 11.2.6

• No issues found!"><pre class="notranslate"><code class="notranslate">➜  ~ flutter doctor -v
[✓] Flutter (Channel master, v0.1.8-pre.43, on Mac OS X 10.13.3 17D102, locale en-KR)
    • Flutter version 0.1.8-pre.43 at /Users/?????/flutter
    • Framework revision fe334e1652 (3 hours ago), 2018-03-02 17:54:51 -0800
    • Engine revision 97b22348c8
    • Dart version 2.0.0-dev.32.0.flutter-ee15c8eb68

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/?????/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = /Users/?????/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-915-b08)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 1.9.2
    • CocoaPods version 1.3.1

[✓] Android Studio (version 3.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] IntelliJ IDEA Community Edition (version 2017.3.4)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 22.1.2
    • Dart plugin version 173.4548.30

[✓] VS Code
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Dart Code extension version 2.8.0

[✓] Connected devices (1 available)
    • ????????????????????????????????????? • ios • iOS 11.2.6

• No issues found!
</code></pre></div>