Setting LD_LIBRARY_PATH environment variable

[dhiraj113]

I am unable to set LD_LIBRARY_PATH environment variable on Ubuntu 16.04 for executable run through vscode. I am using the below launch.json configuration for setting the environment variable.

"environment": [
                {
                    "name": "LD_LIBRARY_PATH",
                    "value": "<path>"
                }
            ],

[pieandcakes]

@dhiraj113 can you paste your entire launch.json please?

[dhiraj113]

Below is my launch.json file

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "C++ Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "/home/dhiraj/opt/sst-core/bin/sst",
            "args": ["/home/dhiraj/Code/SST/sst-elements/src/sst/elements/memHierarchy/tests/sdl5-1-ramulator"],
            "stopAtEntry": true,
            "cwd": "/home/dhiraj/Run/vscode",
            "environment": [
                {
                    "name": "LD_LIBRARY_PATH",
                    "value": "/home/dhiraj/Code/SST/sst-elements/external/ramulator"
                }
            ],
            "externalConsole": true,
            "linux": {
                "MIMode": "gdb",
                "setupCommands": [
                    {
                        "description": "Enable pretty-printing for gdb",
                        "text": "-enable-pretty-printing",
                        "ignoreFailures": true
                    }
                ]
            },
            "osx": {
                "MIMode": "lldb"
            },
            "windows": {
                "MIMode": "gdb",
                "setupCommands": [
                    {
                        "description": "Enable pretty-printing for gdb",
                        "text": "-enable-pretty-printing",
                        "ignoreFailures": true
                    }
                ]
            }
        },
        {
            "name": "C++ Attach",
            "type": "cppdbg",
            "request": "attach",
            "program": "enter program name, for example ${workspaceRoot}/a.out",
            "processId": "${command.pickProcess}",
            "linux": {
                "MIMode": "gdb",
                "setupCommands": [
                    {
                        "description": "Enable pretty-printing for gdb",
                        "text": "-enable-pretty-printing",
                        "ignoreFailures": true
                    }
                ]
            },
            "osx": {
                "MIMode": "lldb"
            },
            "windows": {
                "MIMode": "gdb",
                "setupCommands": [
                    {
                        "description": "Enable pretty-printing for gdb",
                        "text": "-enable-pretty-printing",
                        "ignoreFailures": true
                    }
                ]
            }
        }
    ]
}

[shoutrain]

@dhiraj113 just want to know have you solved this or not and how?

[Elemental239]

Have same problem with Visual Studio 2017 and open-folder feature. Any solution?

[pieandcakes]

@Elemental239 if you enable logging, you should be able to see that we send the command to gdb using -interpreter-exec console "set env <name> <value> during the start up.

To see logging in Visual Studio 2017, go to the Command Window and enter Debug.MIDebugLog /On /OutputWindow and you'll see it all in the output window.

In VS Code it is done by adding "logging": { "engineLogging": true } in launch.json

[duzeev]

relative path example

{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "(gdb) mtclient",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/mtclient/obj-linux/debug/mtclient",
"args": [],
"stopAtEntry": true,
"cwd": "${workspaceFolder}/mtclient",
"environment": [
{
"name": "LD_LIBRARY_PATH",
"value": "${LD_LIBRARY_PATH}:${workspaceFolder}/libbase/obj-linux/debug:${workspaceFolder}/lib1/obj-linux/debug"
}
],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
]
}
]
}

[aleksas]

At least for debugger the only way I was able to set LD_LIBRARY_PATH was by passing it to gdb via cmake.debugConfig.setupCommands:

"setupCommands": [
            {
                "description": "Enable pretty-printing for gdb",
                "text": "-enable-pretty-printing",
                "ignoreFailures": true
            },
            {
                "description": "Additional libs for gdb",
                "text": "set environment LD_LIBRARY_PATH=${workspaceFolder}/<rel_path>:${workspaceFolder}/<other_rel_path>:$LD_LIBRARY_PATH",
                "ignoreFailures": false
            }
        ]

[CoeusK]

I have tried like this in tcsh
{
"name": "LD_LIBRARY_PATH",
"value": "/library/path:${DUMMYNAME}"
}
It works with an setenv warning. You could verify this in gdb with "set env“ command.

[Osyotr]

If anyone found this while searching on how to set LD_LIBRARY_PATH for gdbserver in Visual Studio, here you go:
"preDebugCommand": "export LD_LIBRARY_PATH=/home/me/.vs/MyProject/vcpkg_installed/x64-linux/debug/lib:$LD_LIBRARY_PATH"

[callahanp]

I found that the "environment" section of launch.json on Lubuntu 21.10 worked differently than on 21.04.
In 21.04 I had LD_LIBRARY_PATH defined relative to the location of the executable. I had to change this in 21.10 to locate built shared libraries relative to the workspace folder of the project containing the executable.

The following is what I am using.

"environment": [
            {
                "name": "FG_ROOT",
                "value": "${workspaceFolder}/../fgdata"
            },
            {
                "name": "LD_LIBRARY_PATH",
                "value": "${workspaceFolder}/../install/simgear/lib:${workspaceFolder}/../install/openscenegraph/lib"
            }

I'm filing this one under "Go Figure".

[Rick1Chen]

This way worked after change default terminal from tcsh to bash
"environment": [
{
"name": "LD_LIBRARY_PATH",
"value": "${LD_LIBRARY_PATH}:${workspaceFolder}/libbase/obj-linux/debug:${workspaceFolder}/lib1/obj-linux/debug"
}
],