CSC complains it can’t find XAML files

[wjk]

Issue Description

I am trying to compile the following codebase: https://github.com/wjk/MSIExtractApp/tree/feature/msbuild. When I try to build the MSIExtract project (which is my main, WPF-based app) CSC complains that it can’t find the XAML files.

Steps to Reproduce

Clone and build above-linked branch and repo.

Here is my zipped binlog.

Expected Behavior

Build should succeed.

Actual Behavior

Compiler errors concerning missing XAML files.

Analysis

I have no idea why CSC cares about XAML files. The only thing I can think of is the #pragma checksum line in the generated *.g.i.cs files causes CSC to look for the XAML file named on that line. However, I have no idea what #pragma checksum lines actually do.

This only happens on the branch linked above. The main branch of the same repo builds just fine.

Versions & Configurations

MSBuild version 17.14.23+b0019275e for .NET Framework
17.14.23.42201

Visual Studio 2022, version 17.14.16. Windows 11 build 26100.6584. ARM64 virtual machine on M4 MacBook Air; I am using UTM to run my VM.

[YuliiaKovalova]

attaching the error sample to speedup triage:

C:\Users\REDACTED__Username\Sources\MSIExtractApp\obj\MSIExtract\Debug\net9.0-windows10.0.17763\Views\ExtractFilesView.g.cs(56,18): error CS1504: Source file 'Views\ExtractFilesView.xaml' could not be opened -- Could not find file. [C:\Users\REDACTED__Username\Sources\MSIExtractApp\src\MSIExtract\MSIExtract.csproj]