Bundled app initialization error (vs 15.7 preview)

[tranb3r]

Steps to Reproduce

1. Create a xamarin app for Android
2. Enable "Bundle Assemblies into Native Code" option : true in csproj
3. Build and launch app in VS 2017 15.7 preview

Expected Behavior

No crash.
This is actually what happens with VS 2017 15.6.7

Actual Behavior

App crashes (when using VS 2017 15.7 preview) with the following error:
bundled app initialization error: dlopen failed: cannot locate symbol "mono_jit_set_aot_mode" referenced by libmonodroid_bundle_app.so

Version Information (causing the error)

Version 15.7.0 Preview 5.0
VisualStudio.15.Preview/15.7.0-pre.5.0+27625.0
Mono Debugging for Visual Studio 4.10.5-pre (ab58725)
Xamarin 4.10.0.440 (943b34d9d)
Xamarin.Android SDK 8.3.0.18 (HEAD/1f8462ef1)

Version Information (no error)

Version 15.6.7
VisualStudio.15.Release/15.6.7+27428.2043
Mono Debugging for Visual Studio 4.9.11-pre (71eb098)
Xamarin 4.9.0.753 (f0f46392f)
Xamarin.Android SDK 8.2.0.16 (HEAD/a78295902)

VS bug #618947

[whitwa]

This is also happening with the release of version 15.7.0.

Microsoft Visual Studio Enterprise 2017 Version 15.7.0
VisualStudio.15.Release/15.7.0+27703.1
Mono Debugging for Visual Studio 4.10.5-pre (ab58725)
Xamarin 4.10.0.442 (396b18cef)
Xamarin.Android SDK 8.3.0.19 (HEAD/342b2ce96)

[RajGogri]

This is also happening with the release of VS 2017 community edition. It works fine for the debug build but produces error while running release build.

Setting Enable "Bundle Assemblies into Native Code" option : false in csproj for Release configuration group fixes this issue. But It's a work around.

Development environment info.
Visual Studio Community 2017 for Mac
Version 7.5 (build 1254)
Installation UUID: e1436f78-c6f3-45bb-883a-d0fd263fac97
Runtime:
Mono 5.10.1.47 (2017-12/8eb8f7d5e74) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 4.4.0.36 (master / 0c7c49a6)

Package version: 510010047

NuGet
Version: 4.3.1.4445

.NET Core
Runtime: /usr/local/share/dotnet/dotnet
Runtime Version: 2.0.5
SDK: /usr/local/share/dotnet/sdk/2.1.4/Sdks
SDK Version: 2.1.4
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/msbuild/15.0/bin/Sdks

Xamarin.Profiler
Version: 1.6.2
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Apple Developer Tools
Xcode 9.3 (14154)
Build 9E145

Xamarin.Mac
Version: 4.4.1.176 (Visual Studio Community)

Xamarin.iOS
Version: 11.10.1.177 (Visual Studio Community)
Hash: 7e782c1e
Branch: d15-7
Build date: 2018-04-25 15:27:13-0400

Xamarin.Android
Version: 8.3.0.19 (Visual Studio Community)
Android SDK: /Users/webwerks/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
5.1 (API level 22)
6.0 (API level 23)
7.0 (API level 24)
7.1 (API level 25)
8.0 (API level 26)
8.1 (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 27.0.1
SDK Build Tools Version: 28.0.0 rc1

Java SDK: /usr
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Xamarin Inspector
Version: 1.4.0
Hash: b3f92f9
Branch: master
Build date: Fri, 19 Jan 2018 22:00:34 GMT
Client compatibility: 1

Build Information
Release ID: 705001254
Git revision: 498923ea36d2c7fe440c4e4b8cfb75bd50bbd748
Build date: 2018-05-05 10:35:24-04
Xamarin addins: 219f1c4943b4693b837b4173dd10ea982a47c852
Build lane: monodevelop-lion-d15-7

Operating System
Mac OS X 10.13.4
Darwin 17.5.0 Darwin Kernel Version 17.5.0
Fri Apr 13 19:32:32 PDT 2018
root:xnu-4570.51.2~1/RELEASE_X86_64 x86_64

[jgold6]

I received another report of this and was able to reproduce both on Visual Studio 2017 Windows and VS for Mac (all updated to 15.7) with a template Xamarin.Forms app. I am attaching adb logcat log that show the error and a test project.

VS 2017 Windows version info:

Microsoft Visual Studio Enterprise 2017 Version 15.7.1 VisualStudio.15.Release/15.7.1+27703.2000 Microsoft .NET Framework Version 4.7.03056

Installed Version: Enterprise

Architecture Diagrams and Analysis Tools 00369-90253-02232-AA699
Microsoft Architecture Diagrams and Analysis Tools

Visual C++ 2017 00369-90253-02232-AA699
Microsoft Visual C++ 2017

Application Insights Tools for Visual Studio Package 8.12.10405.1
Application Insights Tools for Visual Studio

ASP.NET and Web Tools 2017 15.0.40501.0
ASP.NET and Web Tools 2017

ASP.NET Core Razor Language Services 15.7.31476
Provides languages services for ASP.NET Core Razor.

ASP.NET Web Frameworks and Tools 2012 4.0.21208.0
For additional information, visit https://www.asp.net/

ASP.NET Web Frameworks and Tools 2017 5.2.60419.0
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0 15.0.40424.0
Azure App Service Tools v3.0.0

Azure Data Lake Node 1.0
This package contains the Data Lake integration nodes for Server Explorer.

Azure Data Lake Tools for Visual Studio 2.3.3000.5
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools 15.0.40502.0
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio 2.3.3000.5
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools 2.8.0-beta6-62830-08. Commit Hash: e595ee276d14e14bfb3eb323fb57f2aa668bddea
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools 1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Fabric.DiagnosticEvents 1.0
Fabric Diagnostic Events

GitHub.VisualStudio 2.5.1.2234
A Visual Studio Extension that brings the GitHub Flow into Visual Studio.

JavaScript Language Service 2.0
JavaScript Language Service

JavaScript Project System 2.0
JavaScript Project System

JavaScript UWP Project System 2.0
JavaScript UWP Project System

Merq 1.1.17-rc (cba4571)
Command Bus, Event Stream and Async Manager for Visual Studio extensions.

Microsoft Azure HDInsight Azure Node 2.3.3000.5
HDInsight Node under Azure Node

Microsoft Azure Hive Query Language Service 2.3.3000.5
Language service for Hive query

Microsoft Azure Service Fabric Tools for Visual Studio 2.1
Microsoft Azure Service Fabric Tools for Visual Studio

Microsoft Azure Stream Analytics Language Service 2.3.3000.5
Language service for Azure Stream Analytics

Microsoft Azure Stream Analytics Node 1.0
Azure Stream Analytics Node under Azure Node

Microsoft Azure Tools 2.9
Microsoft Azure Tools for Microsoft Visual Studio 2017 - v2.9.10420.2

Microsoft Continuous Delivery Tools for Visual Studio 0.3
Simplifying the configuration of continuous build integration and continuous build delivery from within the Visual Studio IDE.

Microsoft JVM Debugger 1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft MI-Based Debugger 1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards 1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers 1.1
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package 1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio 4.10.5-pre (ab58725)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager 4.6.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.

OptionsPackage Extension 1.0
OptionsPackage Visual Studio Extension Detailed Info

ProjectServicesPackage Extension 1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

ResourcePackage Extension 1.0
ResourcePackage Visual Studio Extension Detailed Info

SQL Server Data Tools 15.1.61804.210
Microsoft SQL Server Data Tools

ToolWindowHostedEditor 1.0
Hosting json editor into a tool window

TypeScript Tools 15.7.20419.2003
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools 2.8.0-beta6-62830-08. Commit Hash: e595ee276d14e14bfb3eb323fb57f2aa668bddea
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.1 for F# 4.1 15.7.0.0. Commit Hash: 16ecf5a30ad868d183c58e4a71a71c23d4ed3ba9.
Microsoft Visual F# Tools 10.1 for F# 4.1

Visual Studio Code Debug Adapter Host Package 1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Tools for Universal Windows Apps 15.0.27703.01
The Visual Studio Tools for Universal Windows apps allow you to build a single universal app experience that can reach every device running Windows 10: phone, tablet, PC, and more. It includes the Microsoft Windows 10 Software Development Kit.

VisualStudio.Mac 1.0
Mac Extension for Visual Studio

Windows Machine Learning Generator Extension 1.0
Windows Machine Learning Visual Studio Extension Detailed Info

Xamarin 4.10.0.442 (396b18cef)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer 4.12.264 (fc37cd02e)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin.Android SDK 8.3.0.19 (HEAD/342b2ce96)
Xamarin.Android Reference Assemblies and MSBuild support.

Xamarin.iOS and Xamarin.Mac SDK 11.10.1.177 (7e782c1)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

VS for Mac version info:

=== Visual Studio Enterprise 2017 for Mac ===

Version 7.5 (build 1254)
Installation UUID: f86726f2-bd5d-4610-867e-44e82f306ca2
Runtime:
Mono 5.10.1.47 (2017-12/8eb8f7d5e74) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 4.4.0.36 (master / 0c7c49a6)

Package version: 510010047

=== NuGet ===

Version: 4.3.1.4445

=== .NET Core ===

Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
2.0.5
2.0.0
1.1.1
1.0.4
1.0.0
SDK: /usr/local/share/dotnet/sdk/2.1.4/Sdks
SDK Versions:
2.1.4
2.0.0
1.0.1
1.0.0-preview2-003121
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/msbuild/15.0/bin/Sdks

=== Xamarin.Profiler ===

Version: 1.6.2
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Apple Developer Tools ===

Xcode 9.3 (14154)
Build 9E145

=== Xamarin.Mac ===

Version: 4.4.1.176 (Visual Studio Enterprise)

=== Xamarin.iOS ===

Version: 11.10.1.177 (Visual Studio Enterprise)
Hash: 7e782c1e
Branch: d15-7
Build date: 2018-04-25 15:27:13-0400

=== Xamarin.Android ===

Version: 8.3.0.19 (Visual Studio Enterprise)
Android SDK: /Users/jongoldberger/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
4.0.3 (API level 15)
4.1 (API level 16)
4.2 (API level 17)
4.3 (API level 18)
4.4 (API level 19)
5.0 (API level 21)
5.1 (API level 22)
6.0 (API level 23)
7.0 (API level 24)
7.1 (API level 25)
8.0 (API level 26)
8.1 (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 27.0.1
SDK Build Tools Version: 27.0.3

Java SDK: /usr
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Xamarin Inspector ===

Version: 1.4.0
Hash: b3f92f9
Branch: master
Build date: Fri, 19 Jan 2018 22:00:34 GMT
Client compatibility: 1

=== Build Information ===

Release ID: 705001254
Git revision: 498923ea36d2c7fe440c4e4b8cfb75bd50bbd748
Build date: 2018-05-05 10:35:24-04
Xamarin addins: 219f1c4943b4693b837b4173dd10ea982a47c852
Build lane: monodevelop-lion-d15-7

=== Operating System ===

Mac OS X 10.13.4
Darwin 17.5.0 Darwin Kernel Version 17.5.0
Fri Apr 13 19:32:32 PDT 2018
root:xnu-4570.51.2~1/RELEASE_X86_64 x86_64

=== Enabled user installed addins ===

Internet of Things (IoT) development (Preview) 7.1

Test Project

TestProject.zip

ADB Logcat logs

EmbedAssembliesIntoNativeCodeCrash.txt

[HakanCelikMKA]

I'm also suffering from the same problem, after I updated my Visual Studio installation to 15.7.1 this morning. I couldn't get the release version of my Android project to work.

This doesn't seem to be an edge case. How can such an obvious problem escape the testing ?
@RajGogri thank you for poviding a workaround, you've saved me a lot of time.

My environment :
Windows 10 Enterprise x64, 1709, 16299.431
Microsoft Visual Studio Enterprise 2017 Version 15.7.1
VisualStudio.15.Release/15.7.1+27703.2000
Microsoft .NET FrameworkVersion 4.7.03062
Xamarin 4.10.0.442 (396b18cef)
Xamarin Designer 4.12.264 (fc37cd02e)
Xamarin.Android SDK 8.3.0.19 (HEAD/342b2ce96)

I also see the issue. I just did a clean install of VS2017 for Mac 7.5 to be sure.

Click for a long list of "About" text from VS2017 for Mac...

Visual Studio Professional 2017 for Mac
Version 7.5 (build 1254)
Installation UUID: b05a38fd-8fe4-4390-b9b3-0c464dbea029
Runtime:
Mono 5.10.1.47 (2017-12/8eb8f7d5e74) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 4.4.0.36 (master / 0c7c49a6)

Package version: 510010047

NuGet
Version: 4.3.1.4445

.NET Core
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
2.0.5
2.0.0
1.1.1
1.0.4
SDK: /usr/local/share/dotnet/sdk/2.1.4/Sdks
SDK Versions:
2.1.4
2.0.0
1.0.3
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/msbuild/15.0/bin/Sdks

Xamarin.Profiler
Version: 1.6.2
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Apple Developer Tools
Xcode 9.3 (14154)
Build 9E145

Xamarin.Mac
Version: 4.4.1.176 (Visual Studio Professional)

Xamarin.iOS
Version: 11.10.1.177 (Visual Studio Professional)
Hash: 7e782c1e
Branch: d15-7
Build date: 2018-04-25 15:27:13-0400

Xamarin.Android
Version: 8.3.0.19 (Visual Studio Professional)
Android SDK: /Users/e840944/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
6.0 (API level 23)
7.1 (API level 25)
8.1 (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 27.0.1
SDK Build Tools Version: 27.0.3

Java SDK: /usr
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Xamarin Inspector
Version: 1.4.0
Hash: b3f92f9
Branch: master
Build date: Fri, 19 Jan 2018 22:00:34 GMT
Client compatibility: 1

Build Information
Release ID: 705001254
Git revision: 498923ea36d2c7fe440c4e4b8cfb75bd50bbd748
Build date: 2018-05-05 10:35:24-04
Xamarin addins: 219f1c4943b4693b837b4173dd10ea982a47c852
Build lane: monodevelop-lion-d15-7

Operating System
Mac OS X 10.13.4
Darwin 17.5.0 Darwin Kernel Version 17.5.0
Fri Apr 13 19:32:32 PDT 2018
root:xnu-4570.51.2~1/RELEASE_X86_64 x86_64

Enabled user installed addins
Internet of Things (IoT) development (Preview) 7.1

[brendanzagaeski]

Cross-referencing note for the Microsoft team

A matching error message has also been reported in: https://developercommunity.visualstudio.com/content/problem/249954/build-release-xamarin-android-error-if-check-budle.html

[jzeferino]

Having the same problem here.

[jonpryor]

The immediate cause of the breakage is this change to mkbundle: mono/mono@ca8b8bd346a6

It altered mkbundle output so that it now had a call to mono_jit_set_aot_mode(), which results in an undefined symbol in mkbundle output:

$ …/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-nm -D obj/Debug/bundles/armeabi-v7a/libmonodroid_bundle_app.so | grep mono_
         U mono_jit_set_aot_mode
00000ed8 T mono_mkbundle_init

This is what results in the dlopen failed: cannot locate symbol "mono_jit_set_aot_mode" message in adb logcat.

Furthermore, that mkbundle change (or an earlier one, I haven't dug deeper) has altered the API between xamarin-android and mkbundle output. Xamarin.Android expects a mono_mkbundle_init() declaration of:

typedef void (*mono_register_bundled_assemblies_fn)(const MonoBundledAssembly **);
typedef void (*mono_register_config_for_assembly_fn)(const char* assembly_name, const char* config_xml);

typedef void (*mono_mkbundle_init_ptr) (mono_register_bundled_assemblies_fn, mono_register_config_for_assembly_fn);

The mono_mkbundle_init that mkbundle emits, meanwhile, uses no parameters.

Furthermore, now that mkbundle wants to invoke mono_jit_set_aot_mode(), that will also need to be provided as a parameter to mono_mkbundle_init, thus removing the import from the generated libmonodroid_bundle_app.so.

[fekberg]

@jonpryor Any workaround for this (That is NOT turning off embedding assemblies)? Seems to be an issue in both STABLE and Beta.

[jzeferino]

@fekberg atm the only workaround i know is to set "Bundle Assemblies into Native Code" to false or downgrade your mono version.

[ninaada]

When will this be fixed? We are stuck, not able to make release builds.

[RajGogri]

@ninaada @fekberg You can set BundleAssemblies flag to false for release config in Android's .csproj file. For the time being you can use this work around for running release build.