Description

Shared compilation with Roslyn fails on mono-backed runtime on linux-musl platforms. This only happens on .net6, thus suggesting it is simply a fix needing backporting.

Reproduction Steps

Within Alpine Linux linux-musl-x64 environment:

• Unpack bootstrap tar in ./bootstrap directory
• Attempt to build newtonsoft-json via:

./bootstrap/dotnet build Src/Newtonsoft.Json/Newtonsoft.Json.csproj /v:diag

• let it rip

Note that bootstrap tar was built using this aports script and #68424 to allow building with /p:PrimaryRuntimeFlavor=Mono

Expected behavior

Shared compilation should pass without issue

Actual behavior

Death

Regression?

Not a regression, per se. .net7 with mono has issues on linux-musl but this is not one of them.

Known Workarounds

Building with /p:UseSharedCompilation=false

Configuration

• .NET 6.0.109
• Alpine Linux Edge
• x64 and s390x have been tested to be broken
• Reproducible across multiple linux-musl platforms

Other information

No response