"No C# compiler has been specified" trying to compile iOS Bindings library

[munkii]

Description

This has been raised before but was fixed with a VS update. Doesn't fix for me, I am running VS 17.11.0 Preview 6.0.

If I try and compile my ios bindings library I get the error

error BI0028: bgen: No C# compiler has been specified (using --compiler or --compile-command).

From 1>C:\Program Files\dotnet\packs\Microsoft.iOS.Sdk\17.2.8053\tools\msbuild\iOS\Xamarin.Shared.targets(1746,3):

The CSProj looks like this

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net8.0-ios</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>true</ImplicitUsings>
    <IsBindingProject>true</IsBindingProject>
  </PropertyGroup>

  <ItemGroup>
    <ObjcBindingApiDefinition Include="ApiDefinition.cs" />
    <ObjcBindingCoreSource Include="StructsAndEnums.cs" />
  </ItemGroup>
	<ItemGroup>
		<NativeReference Include="Frameworks\FAT\MirSmartDevice.framework">
			<Kind>Framework</Kind>
			<Frameworks>Foundation UIKit MirSmartDevice</Frameworks>
			<LinkerFlags>-L "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/" -L "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphoneos" -Wl,-rpath -Wl,@executable_path/Frameworks</LinkerFlags>
		</NativeReference>
	</ItemGroup>
</Project>

I have an existing one in a live Xamarin Forms branch but I am trying to migrate to MAUI. I have had previous issues with this bindings library as discussed here, See comment thread

Steps to Reproduce

Try and build/rebuild project even just by itself (not part of wider solution) and it still fails

Link to public reproduction project repository

No response

Version with bug

8.0.80 SR8

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

Nope

Relevant log output

I followed the "Capturing Binary Logs" doc and the binlog is too big to be allowed

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Closed similar issues:

• Unable to compile iOS Binding Library (#23162), similarity score: 0.83
• iOS Binding Does Nothing (#14775), similarity score: 0.74
• Can't compile on Mac (#19039), similarity score: 0.74
• iOS Binding Library - Cannot find types declared (#13283), similarity score: 0.73
• Visual Studio 17.7.0 Pre2 / Dotnet 8 8.0.100-preview.5.23303.2 / MAUI 8.0.0-preview.5.8529 build error XAGJS7023 for Android (#15947), similarity score: 0.73

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[drasticactions]

@rolfbjarne Should this be moved to xamarin-macios?

[munkii]

@drasticactions looking at what is in xamarin-macios it looks like it should be there. Shall I recreate there and close here? I don't have the rights to Transfer it

[drasticactions]

@munkii If you can, please do. I would transfer it, but I also don't have the rights in this repo.

Binding tooling lives in xamarin-macios, along with the rest of the SDK tooling for iOS/Mac. This repo is for the MAUI UI project.

[munkii]

I have recreated this issue over at xamarin-macios, dotnet/macios#21030. Now closing this one