[.NET 9 + WASM + AOT] RELEASE no longer builds

[DierkDroth]

Current behavior

So far I was building the RELEASE version of my solution using the 'use AOT as much as possible' mode <WasmShellMonoRuntimeExecutionMode>InterpreterAndAOT</WasmShellMonoRuntimeExecutionMode>

This no longer works but throws an error (screenshot below).
Also: there are tons of warnings thrown additionally. How would I address these warnings?

You can reproduce by running Minimal.Wasm/Make.bat using this repo:
Minimal.zip

How could I create a RELEASE build with 'as much AOT as possible' and without warnings?

[jeromelaban]

Thanks for the report. Make sure to follow the directions from our release notes.

[DierkDroth]

@jeromelaban unfortunately my solution is still not building. I now have this section for RELEASE mode:

	<PropertyGroup Condition="'$(Configuration)'=='Release'">
		<DefineConstants>$(DefineConstants)</DefineConstants>
		<WasmPWAManifestFile>manifest.json</WasmPWAManifestFile>
		<WasmShellWebAppBasePath>/app/wasm/Latest/wwwroot/</WasmShellWebAppBasePath>
		<UnoXamlResourcesTrimming>true</UnoXamlResourcesTrimming>
		<RunAOTCompilation>true</RunAOTCompilation>
		<WasmShellILLinkerEnabled>true</WasmShellILLinkerEnabled>
	</PropertyGroup>

... and get the error in screenshot below.

Here is the binlog:
msbuild.zip
I have disabled OneDrive or anything else which could access the directory (repo above builds no problem now).

Any idea what's going wrong?

[jeromelaban]

This looks like a xaml trimming issue of some kind. Try disabling it with UnoXamlResourcesTrimming.

[jeromelaban]

LinkerConfig.xml(11,3): warning IL2007: Could not resolve assembly 'Microsoft.Extensions.Options'.

Yes, it can be removed, it's an assembly that has been removed long ago. The message is harmless.

[DierkDroth]

Perfect! Thanks @jeromelaban. I'll resume my testing and will report back...

[DierkDroth]

@jeromelaban update: build succeeded (with > 300 warnings, but still...) -> great

This leaves the question: what should do with UnoXamlResourcesTrimming? Is this no longer needed?

Yes, it can be removed, it's an assembly that has been removed long ago.

Also: not sure what you mean by this. I just checked, appears there even is a version for .NET9...

[DierkDroth]

Also: further down the error stack I see this error
LinkerConfig.xml(11,3): warning IL2007: Could not resolve assembly 'Microsoft.Extensions.Options'.

I suspect this is related to the respective line in the LinkerConfig.xml file (below). Could that line be removed safely? Or needed it to be replaced by something else?

<linker>
	<assembly fullname="Unusual.Common" />
	<assembly fullname="Unusual.Gui.Wasm" />
	<assembly fullname="Unusual.Wasm" />

	<assembly fullname="System.Core">
		<!-- This is required by JSon.NET and any expression.Compile caller -->
		<type fullname="System.Linq.Expressions*" />
	</assembly>

	<assembly fullname="Microsoft.Extensions.Options" />
	<assembly fullname="System.Runtime" />
	<assembly fullname="System.Threading" />
</linker>