[One .NET] Target net6.0 instead of netcoreapp3.1 (#5891)

Projects which were multitargetd to support .NET 6 have been updated to
target `net6.0` instead of `netcoreapp3.1`.  CI has been updated to
install .NET 6 preview 3 instead of .NET 5.

* Bump to xamarin/xamarin-android-tools/main@683f375

Changes: dotnet/android-tools@c5732a0...683f375

build-tools/Xamarin.Android.Tools.BootstrapTasks/Xamarin.Android.Tools.BootstrapTasks/CheckApiCompatibility.cs

@@ -33,7 +33,7 @@ public sealed class CheckApiCompatibility : Task
 
 		static readonly string assemblyToValidate = "Mono.Android.dll";
 
-		static readonly string netCoreAppVersion = "netcoreapp3.1";
+		static readonly string netCoreAppVersion = "net6.0";
 		static string compatApiCommand = null;
 
 		// Path where Microsoft.DotNet.ApiCompat nuget package is located

build-tools/automation/azure-pipelines-nightly.yaml

@@ -40,7 +40,7 @@ variables:
   InstallerArtifactName: installers-unsigned
   TestAssembliesArtifactName: test-assemblies
   DotNetCoreVersion: 3.1.405
-  DotNet5Version: 5.0.201
+  DotNet6Version: 6.0.100-preview.3.21202.5
   HostedMacImage: macOS-10.15
   GitHub.Token: $(github--pat--vs-mobiletools-engineering-service2)
   NUnit.NumberOfTestWorkers: 4

build-tools/automation/azure-pipelines-oss.yaml

@@ -27,7 +27,7 @@ variables:
   EXTRA_MSBUILD_ARGS: /p:AutoProvision=True /p:AutoProvisionUsesSudo=True /p:IgnoreMaxMonoVersion=False
   PREPARE_FLAGS: PREPARE_CI=1 PREPARE_CI_PR=1
   DotNetCoreVersion: 3.1.405
-  DotNet5Version: 5.0.201
+  DotNet6Version: 6.0.100-preview.3.21202.5
   GitHub.Token: $(github--pat--vs-mobiletools-engineering-service2)
 
 stages:
@@ -54,7 +54,6 @@ stages:
 
     - template: yaml-templates/use-dot-net.yaml
       parameters:
-        version: $(DotNet5Version)
         remove_dotnet: true
 
     - template: yaml-templates/use-dot-net.yaml
@@ -174,9 +173,6 @@ stages:
       submodules: recursive
 
     - template: yaml-templates/use-dot-net.yaml
-      parameters:
-        version: $(DotNet5Version)
-        remove_dotnet: true
 
     - template: yaml-templates/use-dot-net.yaml
       parameters:

build-tools/automation/azure-pipelines.yaml

@@ -54,7 +54,7 @@ variables:
   TestAssembliesArtifactName: test-assemblies
   NUnitConsoleVersion: 3.11.1
   DotNetCoreVersion: 3.1.405
-  DotNet5Version: 5.0.201
+  DotNet6Version: 6.0.100-preview.3.21202.5
   HostedMacImage: macOS-10.15
   HostedWinVS2019: Hosted Windows 2019 with VS2019
   VSEngWinVS2019: Xamarin-Android-Win2019
@@ -193,8 +193,6 @@ stages:
       displayName: set JI_JAVA_HOME
 
     - template: yaml-templates\use-dot-net.yaml
-      parameters:
-        version: $(DotNet5Version)
 
     - template: yaml-templates\use-dot-net.yaml
       parameters:
@@ -317,8 +315,6 @@ stages:
       displayName: set JI_JAVA_HOME
 
     - template: yaml-templates\use-dot-net.yaml
-      parameters:
-        version: $(DotNet5Version)
 
     - template: yaml-templates\use-dot-net.yaml
       parameters:
@@ -445,8 +441,6 @@ stages:
       displayName: delete external xamarin-android submodule
 
     - template: yaml-templates/use-dot-net.yaml
-      parameters:
-        version: $(DotNet5Version)
 
     - template: yaml-templates/use-dot-net.yaml
       parameters:
@@ -1316,6 +1310,10 @@ stages:
     - checkout: release_scripts
       clean: true
 
+    - template: yaml-templates/use-dot-net.yaml
+      parameters:
+        remove_dotnet: true
+
     - template: yaml-templates/use-dot-net.yaml
       parameters:
         version: $(DotNetCoreVersion)
@@ -1415,6 +1413,8 @@ stages:
     - checkout: self
       submodules: recursive
 
+    - template: yaml-templates/use-dot-net.yaml
+
     - task: DownloadPipelineArtifact@2
       inputs:
         ${{ if eq(variables['MicroBuildSignType'], 'Real') }}:

build-tools/automation/yaml-templates/commercial-build.yaml

@@ -8,7 +8,6 @@ steps:
 
 - template: use-dot-net.yaml
   parameters:
-    version: $(DotNet5Version)
     remove_dotnet: true
 
 - template: use-dot-net.yaml

build-tools/automation/yaml-templates/setup-test-environment.yaml

@@ -29,13 +29,6 @@ steps:
   condition: and(succeeded(), eq(variables['agent.os'], 'Windows_NT'))
 
 - template: use-dot-net.yaml
-  parameters:
-    version: $(DotNet5Version)
-    remove_dotnet: true
-
-- template: use-dot-net.yaml
-  parameters:
-    version: $(DotNetCoreVersion)
 
 - task: MSBuild@1
   displayName: build xaprepare

build-tools/automation/yaml-templates/use-dot-net.yaml

@@ -2,7 +2,7 @@
 # We prefer this over the UseDotNet task so that we can always clean up old/unstable versions on disk.
 
 parameters:
-  version: $(DotNetCoreVersion)
+  version: $(DotNet6Version)
   remove_dotnet: false
 
 steps:

build-tools/create-packs/Directory.Build.targets

@@ -14,7 +14,7 @@
   <UsingTask TaskName="GenerateBuildManifest" AssemblyFile="$(_MicrosoftDotNetBuildTasksFeedTaskDir)Microsoft.DotNet.Build.Tasks.Feed.dll" />
 
   <PropertyGroup>
-    <_MonoAndroidNETOutputDir>$(XAInstallPrefix)xbuild-frameworks\Microsoft.Android\netcoreapp3.1\</_MonoAndroidNETOutputDir>
+    <_MonoAndroidNETOutputDir>$(XAInstallPrefix)xbuild-frameworks\Microsoft.Android\net6.0\</_MonoAndroidNETOutputDir>
     <_WorkloadResolverFlagFile>$(DotNetPreviewPath)sdk\$(MicrosoftDotnetSdkInternalPackageVersion)\EnableWorkloadResolver.sentinel</_WorkloadResolverFlagFile>
   </PropertyGroup>
 

build-tools/create-packs/Microsoft.Android.Sdk.proj

@@ -26,7 +26,7 @@ core workload sdk packs imported by Microsoft.NET.Workload.Android.
       DependsOnTargets="ConstructInstallerItems;_GenerateBundledVersions;_GetLicense">
     <PropertyGroup>
       <ToolsSourceDir>$(XamarinAndroidSourcePath)bin\Build$(Configuration)\packs\tools\</ToolsSourceDir>
-      <NetCoreAppToolsSourceDir>$(XamarinAndroidSourcePath)bin\$(Configuration)-netcoreapp3.1\</NetCoreAppToolsSourceDir>
+      <NetCoreAppToolsSourceDir>$(XamarinAndroidSourcePath)bin\$(Configuration)-net6.0\</NetCoreAppToolsSourceDir>
     </PropertyGroup>
 
     <ItemGroup>

build-tools/scripts/Configuration.Java.Interop.Override.props

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <CecilSourceDirectory>$(MSBuildThisFileDirectory)..\..\external\mono\external\cecil</CecilSourceDirectory>
     <UtilityOutputFullPath>$(MSBuildThisFileDirectory)..\..\bin\$(Configuration)\lib\xamarin.android\xbuild\Xamarin\Android\</UtilityOutputFullPath>
-    <UtilityOutputFullPathCoreApps>$(MSBuildThisFileDirectory)..\..\bin\$(Configuration)-netcoreapp3.1\</UtilityOutputFullPathCoreApps>
+    <UtilityOutputFullPathCoreApps>$(MSBuildThisFileDirectory)..\..\bin\$(Configuration)-net6.0\</UtilityOutputFullPathCoreApps>
     <XamarinAndroidToolsDirectory>$(MSBuildThisFileDirectory)..\..\external\xamarin-android-tools</XamarinAndroidToolsDirectory>
   </PropertyGroup>
 </Project>

build-tools/scripts/JavaCallableWrappers.targets

@@ -14,8 +14,8 @@
       <OutputPathAbs Condition=" '$(OutputPathAbs)' == '' ">$(MSBuildProjectDirectory)\$(OutputPath)</OutputPathAbs>
       <JcwGen>"$(XAInstallPrefix)xbuild\Xamarin\Android\jcw-gen.exe" -v10</JcwGen>
       <_LibDirs>-L "$(OutputPathAbs.TrimEnd('\'))"</_LibDirs>
-      <_LibDirs Condition=" '$(TargetFramework)' != 'netcoreapp3.1' ">$(_LibDirs) -L "$(OutputPathAbs)..\v1.0" -L "$(OutputPathAbs)..\v1.0\Facades"</_LibDirs>
-      <_LibDirs Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">$(_LibDirs) -L "$(_CorlibDir.TrimEnd('\'))"</_LibDirs>
+      <_LibDirs Condition=" '$(TargetFramework)' != 'net6.0' ">$(_LibDirs) -L "$(OutputPathAbs)..\v1.0" -L "$(OutputPathAbs)..\v1.0\Facades"</_LibDirs>
+      <_LibDirs Condition=" '$(TargetFramework)' == 'net6.0' ">$(_LibDirs) -L "$(_CorlibDir.TrimEnd('\'))"</_LibDirs>
       <_Out>-o "$(MSBuildProjectDirectory)\$(IntermediateOutputPath)jcw\src"</_Out>
     </PropertyGroup>
     <Exec

build-tools/xaprepare/xaprepare/ConfigAndData/Configurables.cs

@@ -320,7 +320,7 @@ public static partial class Paths
 
 			public static string TestBinDir                          => GetCachedPath (ref testBinDir, ()                          => Path.Combine (Configurables.Paths.BinDirRoot, $"Test{ctx.Configuration}"));
 			public static string BinDir                              => GetCachedPath (ref binDir, ()                              => Path.Combine (Configurables.Paths.BinDirRoot, ctx.Configuration));
-			public static string NetCoreBinDir                       => GetCachedPath (ref netCoreBinDir, ()                       => Path.Combine (Configurables.Paths.BinDirRoot, $"{ctx.Configuration}-netcoreapp3.1"));
+			public static string NetCoreBinDir                       => GetCachedPath (ref netCoreBinDir, ()                       => Path.Combine (Configurables.Paths.BinDirRoot, $"{ctx.Configuration}-net6.0"));
 			public static string BuildBinDir                         => GetCachedPath (ref buildBinDir, ()                         => Path.Combine (Configurables.Paths.BinDirRoot, $"Build{ctx.Configuration}"));
 			public static string MingwBinDir                         => GetCachedPath (ref mingwBinDir, ()                         => Path.Combine (ctx.Properties.GetRequiredValue (KnownProperties.AndroidMxeFullPath), "bin"));
 			public static string ProfileAssembliesProjitemsPath      => GetCachedPath (ref profileAssembliesProjitemsPath, ()      => Path.Combine (BuildBinDir, "ProfileAssemblies.projitems"));

global.json

@@ -1,4 +1,7 @@
 {
+  "sdk": {
+    "allowPrerelease": true
+  },
   "msbuild-sdks": {
     "Microsoft.Build.NoTargets": "2.0.1",
     "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.20555.6"

src/Microsoft.Android.Sdk.ILLink/Microsoft.Android.Sdk.ILLink.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\Configuration.props" />
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <DefineConstants>NET5_LINKER</DefineConstants>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>$(XAInstallPrefix)xbuild\Xamarin\Android\</OutputPath>

src/Mono.Android.Export/Mono.Android.Export.csproj

@@ -3,9 +3,9 @@
   <Import Project="..\..\Configuration.props" />
 
   <PropertyGroup>
-    <!-- Only build for netcoreapp3.1 for $(AndroidLatestStableFrameworkVersion) -->
+    <!-- Only build for net6.0 for $(AndroidLatestStableFrameworkVersion) -->
     <TargetFrameworks Condition=" '$(AndroidFrameworkVersion)' != '$(AndroidLatestStableFrameworkVersion)' ">monoandroid10</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(AndroidFrameworkVersion)' == '$(AndroidLatestStableFrameworkVersion)' ">monoandroid10;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(AndroidFrameworkVersion)' == '$(AndroidLatestStableFrameworkVersion)' ">monoandroid10;net6.0</TargetFrameworks>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\..\product.snk</AssemblyOriginatorKeyFile>
     <NoStdLib>true</NoStdLib>
@@ -21,7 +21,7 @@
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
     <OutputPath>$(XAInstallPrefix)xbuild-frameworks\Microsoft.Android\</OutputPath>
   </PropertyGroup>
 
@@ -52,7 +52,7 @@
     </Reference>
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
     <ProjectReference Include="..\..\external\Java.Interop\src\Java.Interop\Java.Interop.csproj" />
   </ItemGroup>
 

src/Mono.Android/Mono.Android.csproj

@@ -5,7 +5,7 @@
   <Import Project="..\..\Configuration.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>monoandroid10;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>monoandroid10;net6.0</TargetFrameworks>
     <RootNamespace>Android</RootNamespace>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\..\product.snk</AssemblyOriginatorKeyFile>
@@ -41,7 +41,7 @@
     <OutputPath>$(XAInstallPrefix)xbuild-frameworks\MonoAndroid\$(AndroidFrameworkVersion)\</OutputPath>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
     <OutputPath>$(XAInstallPrefix)xbuild-frameworks\Microsoft.Android\$(TargetFramework)\</OutputPath>
   </PropertyGroup>
 
@@ -92,7 +92,7 @@
     </Reference>
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
     <ProjectReference Include="..\..\external\Java.Interop\src\Java.Interop\Java.Interop.csproj" />
     <EmbeddedResource Include="ILLink/ILLink.LinkAttributes.xml">
       <LogicalName>ILLink.LinkAttributes.xml</LogicalName>
@@ -375,8 +375,8 @@
   <Target Name="GetTargetPath" />
 
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
-  <!-- Only build the 'netcoreapp3.1' version of 'Mono.Android.dll' once for the latest stable Android version. -->
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' And '$(AndroidFrameworkVersion)' != '$(AndroidLatestStableFrameworkVersion)' ">
+  <!-- Only build the 'net6.0' version of 'Mono.Android.dll' once for the latest stable Android version. -->
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net6.0' And '$(AndroidFrameworkVersion)' != '$(AndroidLatestStableFrameworkVersion)' ">
     <BuildDependsOn></BuildDependsOn>
   </PropertyGroup>
 

src/Mono.Android/Mono.Android.targets

@@ -43,7 +43,7 @@
       <_PackageVersion>$(ProductVersion)</_PackageVersion>
       <_PackageVersionBuild>$(XAVersionCommitCount)</_PackageVersionBuild>
     </PropertyGroup>
-    <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+    <PropertyGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
       <_PackageVersion>$(AndroidPackVersion)</_PackageVersion>
       <_PackageVersionBuild>$(PackVersionCommitCount)</_PackageVersionBuild>
     </PropertyGroup>

src/Xamarin.Android.NamingCustomAttributes/Xamarin.Android.NamingCustomAttributes.projitems

@@ -22,8 +22,8 @@
     <Compile Include="$(MSBuildThisFileDirectory)Android.App\InstrumentationAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Android.App\LayoutAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Java.Interop\IJniNameProviderAttribute.cs" />
-</ItemGroup>
-<ItemGroup Condition=" '$(TargetFramework)' != 'net5.0' ">
+  </ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' != 'net6.0' ">
     <Compile Include="$(MSBuildThisFileDirectory)System.Diagnostics.CodeAnalysis/DynamicallyAccessedMemberTypes.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System.Diagnostics.CodeAnalysis/DynamicDependencyAttribute.cs" />
   </ItemGroup>

tools/javadoc2mdoc/javadoc2mdoc.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net472;net6.0</TargetFrameworks>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputType>Exe</OutputType>
     <RootNamespace>Xamarin.Android.Tools.JavadocToMDoc</RootNamespace>