VScode单个文件直接debug

在调试C/C++代码时，debug是快速定位到问题的重要方式，因此总结一下。

必不可少的几个插件

1. C/C++
2. C/C++ Extension Pack
3. CMake
4. Bazel

步骤

1.新建单个脚本文件并添加断点
2. 按F5选择
3.此时会进入断点处，即可进行debug，同时可以选择"create launch json"
debug时会自动生成tasks.json到.vscode目录下,具体如下所示。

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: g++ build active file",
            "command": "/usr/bin/g++",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}/${fileBasenameNoExtension}"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

cmake 多文件debug

创建原文件目录

新建头文件目录 inc和源文件目录src 以及生成文件目录build
如下图所示：

新建cmake文件

在项目根目录下新建CMakeLists.txt
其中主要需要设置* set(CMAKE_BUILD_TYPE DEBUG)*才可以

cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
CMAKE_POLICY(VERSION 2.6)

message("start building...")

#debug版本才能调试
set(CMAKE_BUILD_TYPE DEBUG)

project(main)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

set(CMAKE_CXX_COMPILER g++)

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc)

file(GLOB_RECURSE PROJECT_HEADERS 
    "inc/*.h"
    )
file(GLOB_RECURSE PROJECT_SOURCES
    "src/*.cc"
    "src/*.cpp"
    )
add_executable(${PROJECT_NAME} ${PROJECT_HEADERS} ${PROJECT_SOURCES})

message(${PROJECT_NAME} " building end!")

新建setup.sh

具体如下：

if [ ! -d "./build/" ];then
mkdir ./build
else
echo "文件夹已经存在"
rm -rf ./build/*
fi
cd build/
rm -rf *
cmake ..
make
echo "build over!"
echo `date`

配置launch.json

由于F5需要调用生成bin文件，需要在launch.json中设置生成文件的位置。

{
    // 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) Launch",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/main",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "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
                }
            ]
        }
    ]
}

编译并添加断点进行debug

一键运行setup.sh即可编译文件，编译成功后，按F5即可debug

bazel 多文件debug

建立工作目录

建立lib、main，文件夹如下图所示，同时在根目录下新建一个WORKSPACE文件

配置json

其中hello-world是生成bin文件名称

• 其中tasks.json文件如下所示：

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
          "label": "Build Example (Debug)",
          "type": "shell",
          "command": "bazel build //main:hello-world -c dbg",
          "windows": {
            "command": "bazel build :hello-world --enable_runfiles -c dbg"
          },
          "osx": {
            "command": "bazel build :hello-world -c dbg --spawn_strategy=standalone",
          },
          "group": {
            "kind": "build",
            "isDefault": true
          }
        }
      ]
}

• launch.json

{
    // 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": "BazelBuild",
            "preLaunchTask": "Build Example (Debug)",
            "type": "cppdbg",
            "MIMode": "gdb",
            "request": "launch",
            "program": "${workspaceFolder}/bazel-bin/main/hello-world",
            // "program": "${workspaceFolder}/bazel-out/k8-dbg/bin/main/hello-world",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}/bazel-out/k8-dbg/bin/main/hello-world.runfiles/__main__/",
            "environment": [],
            "console": "externalTerminal",
        }
    ]
}

添加断点调试

其中红框中时按f5后自动编译生成的文件夹