使用VSCODE生成调试Linux下C++的CMake项目

Love The Way You Lie 2022-12-07 15:20 304阅读 0赞

#  #

> 以[epoll-server][]项目为例，通过VSCODE编译并调试。  
> 该形目由CMake构建，目标在该目录下生成build目录，通过CMake生成Makefile工程到build目录下，然后在build目录下执行make命令进行编译，最后通过VSCODE进行调试。

### Build ###

1.  代码目录  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE3MjYwMDU_size_16_color_FFFFFF_t_70_pic_center]
2.  用VSCODE WSL模式打开该目录。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE3MjYwMDU_size_16_color_FFFFFF_t_70_pic_center 1]
3.  在.vscode文件夹下面创建task.json。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE3MjYwMDU_size_16_color_FFFFFF_t_70_pic_center 2]

task.json

{ 
      "version": "2.0.0",
      "tasks": [
        { 
          "label": "mkdir",
          "type": "shell",
          "command": "mkdir build -p"
        },
    
        { 
          "label": "cmake",
          "type": "shell",
          "command": "cmake -DCMAKE_BUILD_TYPE=debug ..",
          "dependsOn": ["mkdir"], 
          "options": { 
            "cwd": "${workspaceFolder}/build" 
          },
        },
    
        { 
          "label": "make",
          "type": "shell",
          "command": "make -j4",
          "options": { 
            "cwd": "${workspaceFolder}/build" 
          },
        }
      ]
    }

该文件包含三个task(task名字就是label)：**mkdir**, **cmake**, **make**。

*  **mkdir**: 命令`$ mkdir build -p`，在当前目录生成build文件夹。
 *  **cmake**: `dependsOn`表明执行该task之前会先调用mkdir这个task。`cwd`表明切换到build目录下。命令`$ cmake -DCMAKE_BUILD_TYPE=debug ..`，生成makefile工程到build文件夹。
 *  **make**: `cwd`表明切换到build目录下。 命令`$ make -j4`, 进行编译。

1.  在VSCODE中运行创建的这两个task(“cmake"和"make”)来进行编译。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE3MjYwMDU_size_16_color_FFFFFF_t_70_pic_center 3]

### Debug ###

在.vscode文件夹下面创建launch.json

{ 
      "version": "0.2.0",
      "configurations": [
        { 
          "name": "(gdb) Launch",
          "type": "cppdbg",
          "request": "launch",
          "program": "${workspaceFolder}/build/src/app/epoll_server",
          "args": [],
          "stopAtEntry": false,
          "cwd": "${workspaceFolder}",
          "environment": [],
          "externalConsole": false,
          "MIMode": "gdb",
          "setupCommands": [
            { 
              "description": "Enable pretty-printing for gdb",
              "text": "-enable-pretty-printing",
              "ignoreFailures": true
            }
          ]
        }
      ]
    }

将`program`参数指定为编译好的可执行文件即可。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTE3MjYwMDU_size_16_color_FFFFFF_t_70_pic_center 4]

[epoll-server]: https://github.com/zhe-ma/epoll-server
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