Unable to build Xamarin Android Application in Release Mode - xamarin

Question

I am trying to build Xamarin Forms Android App but it's not getting compiled in Release mode, while Debug works fine.
Error Detail:
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets(5,5):
Error MSB4018: The "LinkAssemblies" task failed unexpectedly.
Mono.Linker.Steps.XmlResolutionException: Failed to process XML
description: --->
Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly:
'Prism.Core, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
---> Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'Prism.Core, Version=0.0.0.0, Culture=neutral,
PublicKeyToken=null' at Mono.Cecil.BaseAssemblyResolver.Resolve
(Mono.Cecil.AssemblyNameReference name, Mono.Cecil.ReaderParameters
parameters) [0x0015e] in
/Users/builder/data/lanes/6102/8255f42f/source/monodroid/external/xamarin-android/external/mono/external/cecil/Mono.Cecil/BaseAssemblyResolver.cs:172
at Mono.Linker.AssemblyResolver.Resolve
(Mono.Cecil.AssemblyNameReference name, Mono.Cecil.ReaderParameters
parameters) [0x0005c] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.LinkContext.Resolve (Mono.Cecil.IMetadataScope scope)
[0x00007] in <947dd92f52fa43c1922f96c7b9774bdc>:0 --- End of inner
exception stack trace --- at Mono.Linker.LinkContext.Resolve
(Mono.Cecil.IMetadataScope scope) [0x00030] in
<947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.Steps.ResolveFromXmlStep.GetAssembly
(Mono.Linker.LinkContext context, Mono.Cecil.AssemblyNameReference
assemblyName) [0x00000] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.Steps.ResolveFromXmlStep.ProcessAssemblies
(Mono.Linker.LinkContext context, System.Xml.XPath.XPathNodeIterator
iterator) [0x00010] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.Steps.ResolveFromXmlStep.Process () [0x00037] in
<947dd92f52fa43c1922f96c7b9774bdc>:0 --- End of inner exception
stack trace --- at Mono.Linker.Steps.ResolveFromXmlStep.Process ()
[0x000a9] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.Steps.BaseStep.Process (Mono.Linker.LinkContext context)
[0x00010] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Mono.Linker.Pipeline.Process (Mono.Linker.LinkContext context)
[0x0001c] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
MonoDroid.Tuner.Linker.Run (Mono.Linker.Pipeline pipeline,
Mono.Linker.LinkContext context) [0x00000] in
<947dd92f52fa43c1922f96c7b9774bdc>:0 at
MonoDroid.Tuner.Linker.Process (MonoDroid.Tuner.LinkerOptions options,
Mono.Linker.ILogger logger, Mono.Linker.LinkContext& context)
[0x00071] in <947dd92f52fa43c1922f96c7b9774bdc>:0 at
Xamarin.Android.Tasks.LinkAssemblies.Execute
(Java.Interop.Tools.Cecil.DirectoryAssemblyResolver res) [0x002d4] in
<947dd92f52fa43c1922f96c7b9774bdc>:0 at
Xamarin.Android.Tasks.LinkAssemblies.Execute () [0x0021f] in
<947dd92f52fa43c1922f96c7b9774bdc>:0 at
Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute
() [0x00023] in
/Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:573
at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask
(Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost,
Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext,
Microsoft.Build.BackEnd.TaskHost taskHost,
Microsoft.Build.BackEnd.ItemBucket bucket,
Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask) [0x001f6]
in
/Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:784
(MSB4018) (VSTSBuild.Droid)
Also I noticed that it's building in Release mode as well if I enable 'Use Shared Mono Runtime' but if it's disabled then I am having issue building the solution.

Answer 1

Okay, I found out that issue was with LinkerSettings. Previously my Linker Settings was like this:
<linker>
<assembly
fullname="Prism.Core" />
<assembly
fullname="Prism.Forms" />
<assembly
fullname="Prism.Unity.Forms" />
<assembly
fullname="Prism.Plugin.Popups" />
</linker>
Which I updated to:
<linker>
<assembly
fullname="Prism.Forms">
<type
fullname="Prism.Common.ApplicationProvider"
preserve="all" />
<type
fullname="Prism.Services.PageDialogService"
preserve="all" />
<type
fullname="Prism.Services.DeviceService"
preserve="all" />
<type
fullname="Prism.Ioc*"
preserve="all" />
<type
fullname="Prism.Modularity*"
preserve="all" />
<type
fullname="Prism.Navigation*"
preserve="all" />
<type
fullname="Prism.Behaviors.PageBehaviorFactory"
preserve="all">
<method
name=".ctor" />
</type>
<type
fullname="Prism.Services.DependencyService"
preserve="all">
<method
name=".ctor" />
</type>
</assembly>
<assembly
fullname="Prism">
<type
fullname="Prism.Navigation*"
preserve="all" />
<type
fullname="Prism.Logging.EmptyLogger"
preserve="all">
<method
name=".ctor" />
</type>
</assembly>
</linker>
Now App is building fine in Release mode as well.