Antlr4 build task requirements

[phillijw]

1>Antlr4BuildTasks.targets(138,9): Error ANT02 : Cannot find Java executable''   at Antlr4.Build.Tasks.RunAntlrTool.SetupJava()
   at Antlr4.Build.Tasks.RunAntlrTool.Execute()
1>Antlr4BuildTasks.targets(138,9): Error ANT02 : The Antlr4 tool failed.
1>Antlr4BuildTasks.targets(138,9): Error ANT02 : Cannot find Java executable''   at Antlr4.Build.Tasks.RunAntlrTool.SetupJava()
   at Antlr4.Build.Tasks.RunAntlrTool.Execute()
1>Antlr4BuildTasks.targets(138,9): Error ANT02 : The Antlr4 tool failed.

Might be good to have some basic instructions for dependencies required or else automatically install these dependencies using nuget?

[phillijw]

I do see there's meta/build_cloudflare.sh but even it doesn't suggest java is a requirement

[BAndysc]

What OS are you using? What IDE/command line did you use? Antlr4BuildTasks is able to download java runtime on its own and there should be nothing required other than dotnet run. I am afraid in this case it might be some Antlr4BuildTasks corner case.

[phillijw]

I'm on macos using jetbrains rider. I'll try some more things tomorrow via commandline

[BAndysc]

Looks like Antlr4BuildTasks doesn't support ARM macs: https://github.com/kaby76/Antlr4BuildTasks/blob/master/Antlr4BuildTasks/Tasks/RunAntlrTool.cs#L937-L946

I also use one, but apparently I have java installed. So I guess you have to install it manually as well. I will update the readme later.

[davidbitterlich]

Manually installing Java did not work for me on macOS. I needed to adjust the csproj file to add to it (according with the correct path).

Maybe this would be good to be added to the readme in case compilation does not work?