Gdb+vscode for debugging 1 -- compile and debug using cmakelist files + attach process debugging

1. Establish engineering documents , The file tree is as follows

2.make.sh The script file is as follows

#! /bin/bash
cmake ..
make

3.CMakelist The documents are as follows

cmake_minimum_required(VERSION 3.16)       #  The version should be in 3.16 And above 
project(GDB)

set(CMAKE_CXX_STANDARD 14)
SET(CMAKE_BUILD_TYPE DEBUG)                # Debugging mode is indispensable ！

add_executable(HelloGDB main.cpp fun.h)
target_link_libraries(HelloGDB pthread)    # Multithreading needs to link library files pthread

3. Return to the main function interface ,F5

The following folders are automatically generated

4. newly build launch.json file , edit launch.json file ,Add Configuration…

launch Is the compile Run option ,attach It is an additional process debugging function

5. choice launch The way , Compile run mode

{
    "configurations": [
        {
            "name": "Debug HelloVS",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/HelloGDB",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}/build",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description":  "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "Build HelloVS",
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

 "program": "${workspaceFolder}/build/HelloGDB"      #  Specify the directory of the executable to be debugged 

6. edit tasks.json file

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "Build HelloVS",
            "command": "./make.sh",
            "args": [
            ],
            "options": {
                "cwd": "${workspaceFolder}/build"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

"label": "Build HelloVS"            # there Build HelloVS And launch.json In the file "preLaunchTask": "Build HelloVS"  The names must be the same ,launch.json The preparatory work is to carry out Build HelloVS The job of , Namely compilation work 
"cwd": "${workspaceFolder}/build"   # Appoint make.sh File directory 
"command": "./make.sh"              # perform make.sh file , Must have chmod +x make.sh
"args": []                          #make The parameter of does not need to be specified , It's empty 

7. Return to the main function file ,F5 Perform twice

8. Another way Attach, Debug the running program

launch The documents are as follows ：

{
    "configurations": [
        {
            "name": "(gdb) Attach",
            "type": "cppdbg",
            "request": "attach",
            "program": "${workspaceFolder}/build/HelloGDB",
            "processId": "${command:pickProcess}",
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description":  "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ]
        },
        
        {
            "name": "Debug HelloVS",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/HelloGDB",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}/build",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description":  "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "Build HelloVS",
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

9. Run the program first

10. choice attach Mode debugging

F5 perform , Enter the name of the function to be debugged