在ubuntu下调试C++ 本人觉得VSCode比较好用。
步骤如下:
1. 编写.cpp,.h文件
自行完成自己的程序。
2. 编写CMakeLists.txt。下面是一个比较好用的模板。
根目录为:
PROJECT(mmseg CXX) #项目名称
#Cmake最低版本要求
CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
#允许gdb调试
set(CMAKE_BUILD_TYPE "Debug")
set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -Wall -g -ggdb")
set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -O3 -Wall")
#添加C++11支持及其他选项
set(CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS} -g -ftest-coverage -fprofile-arcs -Wno-deprecated")
#set(CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS -g -ftest-coverage -fprofile-arcs"})
#添加dict子目录
add_subdirectory(dict)
#当前目录下所有源文件赋给DIR_SRCS
AUX_SOURCE_DIRECTORY(. DIR_SRCS)
#生成可执行文件
add_executable(mmseg ${DIR_SRCS})
#添加C++11编译选项,但是只有CMAKE 3.1支持
#target_compile_features(mmseg PRIVATE cxx_range_for)
#添加链接库
target_link_libraries(mmseg Dict)
子目录为:
#查找当前目录下所有源文件
#并将结果保存在DIR_LIB_SRCS变量中
aux_source_directory(. DIR_LIB_SRCS)
#生成链接库
add_library(Dict ${DIR_LIB_SRCS})
3. 编写一个compile.sh
mkdir -p build rm -rf build/* cd build cmake .. -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_BUILD_TYPE=Debug make
4. build and run tasks
使用Ctrl+Shift+P快捷键,并且在下拉菜单中选择>tasks: configure task,然后在下拉菜单中选择ohter 用于build程序。在生成的tasks.json中加入build与debug内容
{ // See https://go.microsoft.com/fwlink/?LinkId=733558 // for the documentation about the tasks.json format "version": "2.0.0", "tasks": [ { "label": "CMake build", "type": "shell", "command": "./compile.sh", "group": { "kind": "build", "isDefault": true }, "problemMatcher": [ "$gcc" ] }, { "label": "run", "type": "shell", "command": "./build/your_run_file", #!! change here for your config "group": { "kind": "build", "isDefault": true }, "problemMatcher": [ "$gcc" ] } ] }
然后使用Ctrl+Shift+P快捷键,并且在下拉菜单中选择>Tasks: Run Task,选择build或者run tasks就可以build并生成可执行文件。
这时可能会提示:
/bin/bash: ./compile.sh: Permission denied
The terminal process terminated with exit code: 126
错误,使用命令
sudo chmod 755 compile.sh
5.debug程序
由于使用cmake来build程序,已经在compile.sh中加入了debug信息-DCMAKE_BUILD_TYPE=Debug
点击VSCode左侧的小虫子按钮,添加一个新的configuration,选择C++(GDB/LLDB)。这时产生一个launch.json文件,添加
{ // Use IntelliSense to learn about possible attributes. // Hover to view descriptions of existing attributes. // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 "version": "0.2.0", "configurations": [ { "name": "(gdb) Launch", "type": "cppdbg", "request": "launch", "program": "${workspaceFolder}/build/blob_demo", #!! change here for your config "args": [], "stopAtEntry": false, "cwd": "${workspaceFolder}", "environment": [], "externalConsole": true, "MIMode": "gdb", "setupCommands": [ { "description": "Enable pretty-printing for gdb", "text": "-enable-pretty-printing", "ignoreFailures": true } ] } ] }
在你的.cpp文件中设置一个断点,点击运行按钮,就可以debug了。