C1047 on bilinearspan.lib with current compiler

• .NET Core Version: 5.0.100, per global.json.
• Windows version: Windows 10 build 21277.100.
• Does the bug reproduce also in WPF for .NET Framework 4.8?: N/A, build-time issue.

Problem description

When I build my fork of WPF using the Release configuration, I see the error message listed below. (For some reason it works just fine in the Debug configuration.) I am using the MSVC compiler, version 19.28.29617, as included with Visual Studio 16.9.0 Preview 2.0.

Actual behavior

LINK : fatal error C1047: The object or library file 'C:\Users\William\.nuget\packages\runtime.win-x86.microsoft.dotnet
.wpf.dnceng\5.0.0-rtm.20560.4\runtimes\win-x86\native\bilinearspan.lib' was created by a different version of the compi
ler than other objects like 'D:\Projects\dotnet-wpf\artifacts\obj\wpfgfx\Win32\Release\precomp.obj'; rebuild all object
s and libraries with the same compiler [D:\Projects\dotnet-wpf\src\Microsoft.DotNet.Wpf\src\WpfGfx\core\dll\wpfgfx.vcxp
roj]
LINK : fatal error LNK1257: code generation failed [D:\Projects\dotnet-wpf\src\Microsoft.DotNet.Wpf\src\WpfGfx\core\dll
\wpfgfx.vcxproj]

Expected behavior

It should link.

Minimal repro

Checkout commit a6e62c39fab3f860a37c2f361fd225d52a982e4f from wjk/dotnet-wpf. Run build.bat -c Release -pack -bl. Observe the error.

[ryalanms]

Even if the lib is compiled without whole program optimization, the linker will still fail with LTCG if the compiler versions are different.

[ryalanms]

I’ll close this when I see the darc flow from the int repo. Thanks.