Where is corerun ?

[micli]

At the .NET Core debugging instruction markdown file
https://github.com/dotnet/coreclr/blob/master/Documentation/building/debugging-instructions.md
mentioned that:
Start lldb (the version the plugin was built with, currently 3.6): lldb-3.6 corerun HelloWorld.exe linux

But I cannot find corerun from official installation package.
If I compiled manually, I can find some corerun locations like this:
corerun:[micl@centos7dotnet dotnet]$ find -name corerun ./coreclr/src/coreclr/hosts/corerun ./coreclr/bin/Product/Linux.x64.Debug/corerun ./coreclr/bin/obj/Linux.x64.Debug/src/coreclr/hosts/unixcorerun/corerun ./corefx/packages/runtime.linux-x64.microsoft.netcore.testhost/2.1.0-preview1-25409-01/runtimes/linux-x64/native/corerun ./corefx/bin/runtime/netcoreapp-Linux-Debug-x64/corerun ./corefx/bin/testhost/netcoreapp-Linux-Debug-x64/shared/Microsoft.NETCore.App/9.9.9/corerun ./corefx/bin/Unix.AnyCPU.Debug/runtime/netcoreapp/corerun

If I want to launch process from LLDB, how can I do ？ Thanks!

[micli]

Actually, if you run dotnet run in .NET project folder, the compiled binary will be HelloWorld.dll not HelloWorld.exe . I don't know how to launch a HelloWorld.dll process by LLDB.

[mikedn]

I'm not exactly familiar with this but have you tried running via the dotnet command?

The instructions you're looking at are about debugging the runtime itself so they assume that you build it, use its own corerun and some test managed executable.

[micli]

@mikedn I know how to run a dll on Linux. But now I am going to debug process and have to lunch it by LLDB.

Finally I launched lldb with below command:
lldb /usr/local/bin/dotnet ~/dotnet/demos/HelloWorld/bin/Debug/netcoreapp2.0/HelloWorld.dll
It works.

It seems dotnet functionally replaced corerun. But the confused is that I did not find corerun in official .NET Core SDK package. But If I compiled coreclr project, I will find corerun in some folders as below.
./coreclr/src/coreclr/hosts/corerun ./coreclr/bin/Product/Linux.x64.Debug/corerun ./coreclr/bin/obj/Linux.x64.Debug/src/coreclr/hosts/unixcorerun/corerun ./corefx/packages/runtime.linux-x64.microsoft.netcore.testhost/2.1.0-preview1-25409-01/runtimes/linux-x64/native/corerun ./corefx/bin/runtime/netcoreapp-Linux-Debug-x64/corerun ./corefx/bin/testhost/netcoreapp-Linux-Debug-x64/shared/Microsoft.NETCore.App/9.9.9/corerun ./corefx/bin/Unix.AnyCPU.Debug/runtime/netcoreapp/corerun

Actually, I want to clarify below information:
a) Is corerun is a prerequisites components in coreclr ?
b) Is corerun has been replaced by dotnet in future?
c) Is the document https://github.com/dotnet/coreclr/blob/master/Documentation/building/debugging-instructions.md tooooo old? or my operations are wrong?

[mikedn]

It seems dotnet functionally replaced corerun.

Not really, as far as .NET Core is concerned dotnet is the way to run apps, that's how it has always been. corerun is a coreclr specific tool used to debug and test the runtime itself.

[jkotas]

Check https://docs.microsoft.com/en-us/dotnet/core/tutorials/netcore-hosting

dotnet is a more complex host that has built-in support for NuGet abstractions. You get it by default from .NET Core tooling.

corerun is a simple host that runs whatever is in the given directory. It tends to be preferred by engineers who work on low-level runtime.

Would you mind updating the debugging instructions to clarify that they work equally well for both dotnet and corerun hosts?

[danmoseley]

Out of date now I think.