Ubuntu系统下使用VScode进行CMake编译调试C++程序

一、前提须知

必须确保你的cmake文件能够编译通过，并可以通过make生成可执行文件

二、具体步骤

1.设置CMakeLists.txt

set(CMAKE_BUILD_TYPE DEBUG)

2.VScode调试

VScode调试底层是调用gdb，因此需要修改配置launch.json文件为：

{
    "version": "0.2.0",
    "configurations": [


        {
            "name": "(gdb) Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/MROR_exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ],
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

program为你make生成可执行文件的路径配置, MROR_exe为add_executable生成的可执行文件名称。

三、编译并调试

cmake ..
make

一定要提前确保你的程序能够编译并且运行，否则不能调试！

给你的程序打上断点，然后按F5，进入调试

四、正常来说上述已经可以进行调试了，但是需要手动cmake,比较麻烦，下面介绍一种直接自动编译调试的方法

1.在vscode配置task.json为：

{
    "version": "2.0.0",
    "options": {
        "cwd": "${workspaceFolder}/build"
    },
    "tasks": [
        {
            "type": "shell",
            "label": "cmake_label",
            "command": "cmake",
            "args": [
                "-DCMAKE_BUILD_TYPE=Debug",
                ".."
            ]
        },
        {
            "label": "make_label",
            "group": {
                "kind":"build",
                "isDefault": true
            },
            "command": "make"
        },
        {
            "label": "Build_label",
            "dependsOrder": "sequence",
            "dependsOn": [
                "cmake_label",
                "make_label"
            ]
        }
    ]
}

2.并且在上述的launch.json加入一行"preLaunchTask": "Build_label"

即：

{
    "version": "0.2.0",
    "configurations": [


        {
            "name": "(gdb) Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/MROR_exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "Build_label",
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

配置完成之后，直接按F5，相当于执行了一个prelaunchtask的任务，自动cmake ..&& make