net45 assembly missing from Antlr4.Runtime.Standard 4.10.1 nuget package

[appel1]

This causes build errors in our projects that target .NET 4.6.2.

Looking at https://github.com/antlr/antlr4/blob/master/runtime/CSharp/src/Antlr4.csproj it looks like a net45 target is built and included as long as you build on Windows. Was the nuget package built on a non-Windows machine by mistake?

[KvanTTT]

Please elaborate or suggest a pull request. ANTLR is compatible with non-Windows machines. net45 for Windows was added for better compatibility with .NET Framework: https://github.com/antlr/antlr4/issues/3212

[appel1]

The published nuget package does not contain net45 binaries.

Possibly because if the nuget package is built on a non-windows machine only the netstandard2.0 target is built.

Not sure how to fix this. Perhaps by failing the build completely if not done on Windows?

[KvanTTT]

Got it. It looks like C# runtime should always build on Windows machines.