convert from type=cppdbg to type=gdb

[fensoft]

Hello,

Because I want an automatic run of gdb, I want to use this plugin's gdb.

I'm on macos 10.12.6 and compiled gdb with all targets to debug remote linux code.

Here's what I have that works (I need to run gdbserver manualy):

            "name": "hello",
            "type": "cppdbg",
            "request": "launch",
            "program": "./hello",
            "cwd": "/Volumes/share/hello",
            "stopAtEntry": false,
            "MIMode": "gdb",
            "miDebuggerPath": "/Users/fensoft/gdb-8.1.1/bin/gdb",
            "miDebuggerServerAddress": "server"

Here's what I have converted to use this plugin:

            "type": "gdb",
            "request": "launch",
            "name": "hello",
            "target": "./hello",
            "cwd": "/Volumes/share/hello",
            "gdbpath": "/Users/fensoft/gdb-8.1.1/bin/gdb",
            "printCalls": true,
            "showDevDebugOutput": true,
            "ssh": {
                "host": "server",
                "cwd": "/data/hello",
                "keyfile": "/tmp/.id_rsa",
                "user": "root"
            }

The problem is, when I start debugging, it simply briefly show the debug buttons and that's all. No error messages, nothing. Any idea ?

[WebFreak001]

try making target an absolute path. Does the ssh.keyfile exist? Otherwise I don't really know what could be the issue. Is there no log at all in the debug output panel?

[fensoft]

I got it working. Several problems here: The first looks like a bug in VSCode. To view the debug console, I need to switch to another debug console then switch back to the main debug console again.

The second is that the local machine does not need a local gdb version nor using gdbserver. So, specifying a gdbpath is useless.

Third problem was the target (putting it as an absolute path is mandatory here)

Fourth problem is that forwardX11 is true by default.

[WebFreak001]

target will be relative to cwd. If you want it relative to your project workspace, use ${workspaceRoot}/path/to/executable

You are right, X11 forwarding defaulting to true seems wrong as it most likely always needs some configuration to make it work.

[fensoft]

also, tagging gdb-server for this repo and not using it makes me doing wrong guess on how it's working. Maybe claryfing it in the documentation can be a good idea (i thought it was creating a gdbserver and tunnel it through ssh but it's not the case)

[WebFreak001]

Using gdb server works differently, see https://github.com/WebFreak001/code-debug#using-gdbserver-for-remote-debugging-gdb-only

If you want to use it over SSH, use SSH tunneling to connect to it

[fensoft]

Oh, yeah, sorry. So it can also be used to connect to an existing gdbserver. Is it possible to add a feature to automaticaly run the gdbserver (and managing the ssh tunnel) on the other side ?

[WebFreak001]

you can use a preLaunchTask to run a command