Skip CreateMSBuildAppHost in offline source-build

YuliiaKovalova · Copilot · YuliiaKovalova · commit 3153cc75ad65 · 2026-03-04T15:05:29.000+01:00
CreateMSBuildAppHost requires the microsoft.netcore.app.host NuGet
package which is not available in offline source-build. Skip the
target and its associated chmod commands when DotNetBuildSourceOnly
is set. The apphost can be enabled for source-build once the package
is added to the prebuilts cache.

Co-authored-by: Copilot &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/src/sdk/src/Layout/redist/targets/Crossgen.targets b/src/sdk/src/Layout/redist/targets/Crossgen.targets
@@ -198,7 +198,7 @@
     <Exec Command="find $(InstallerOutputDirectory) -type d -exec chmod 755 {} \;" Condition="'$(OSName)' != 'win'" />
     <Exec Command="find $(InstallerOutputDirectory) -type f -exec chmod 644 {} \;" Condition="'$(OSName)' != 'win'" />
     <Exec Command="chmod 755 $(InstallerOutputDirectory)Roslyn/bincore/%(_RoslynAppHost.Filename)" Condition="'$(OSName)' != 'win'" />
-    <Exec Command="chmod 755 $(InstallerOutputDirectory)%(_MSBuildAppHost.Filename)" Condition="'$(OSName)' != 'win'" />
+    <Exec Command="chmod 755 $(InstallerOutputDirectory)%(_MSBuildAppHost.Filename)" Condition="'$(OSName)' != 'win' and '$(DotNetBuildSourceOnly)' != 'true'" />
   </Target>
 
 </Project>
diff --git a/src/sdk/src/Layout/redist/targets/GenerateLayout.targets b/src/sdk/src/Layout/redist/targets/GenerateLayout.targets
@@ -70,7 +70,7 @@
           Condition="$(SharedFrameworkRid.StartsWith('osx'))" />
   </Target>
 
-  <Target Name="CreateMSBuildAppHost">
+  <Target Name="CreateMSBuildAppHost" Condition="'$(DotNetBuildSourceOnly)' != 'true'">
     <CreateAppHost AppHostSourcePath="$(NuGetPackageRoot)\microsoft.netcore.app.host.$(SharedFrameworkRid)\$(MicrosoftNETCoreAppHostPackageVersion)\runtimes\$(SharedFrameworkRid)\native\apphost$(ExeExtension)"
                    AppHostDestinationPath="%(_MSBuildAppHost.RootDir)%(_MSBuildAppHost.Directory)%(_MSBuildAppHost.Filename)$(ExeExtension)"
                    AppBinaryName="%(_MSBuildAppHost.Filename)%(_MSBuildAppHost.Extension)"
@@ -521,7 +521,7 @@
     <Exec Command="find $(OutputPath) -type d -exec chmod 755 {} \;" />
     <Exec Command="find $(OutputPath) -type f -exec chmod 644 {} \;" />
     <Exec Command="chmod 755 %(_RoslynAppHost.RootDir)%(_RoslynAppHost.Directory)%(_RoslynAppHost.Filename)" />
-    <Exec Command="chmod 755 %(_MSBuildAppHost.RootDir)%(_MSBuildAppHost.Directory)%(_MSBuildAppHost.Filename)" />
+    <Exec Command="chmod 755 %(_MSBuildAppHost.RootDir)%(_MSBuildAppHost.Directory)%(_MSBuildAppHost.Filename)" Condition="'$(DotNetBuildSourceOnly)' != 'true'" />
   </Target>
 
   <Target Name="DeleteSymbolsFromPublishDir" DependsOnTargets="GenerateCliRuntimeConfigurationFiles">
