CMakeLists.txt 编写

记录下自己第一次编写的cmake.

• 一 目录结构如下:

.
├── CMakeLists.txt
├── include
├── judge
├── lib
├── Makefile
├── nvm_engine
└── test

　二级目录结构如下:

.
├── CMakeLists.txt
├── include
│   └── db.hpp
├── judge
│   ├── CMakeLists.txt
│   ├── judge.cpp
│   ├── performance.log
│   ├── random.cpp
│   ├── random.h
│   └── README.md
├── lib
├── Makefile
├── nvm_engine
│   ├── CMakeLists.txt
│   ├── lib
│   ├── NvmEngine.cpp
│   ├── NvmEngine.hpp
│   └── NvmEngine.o
└── test
    ├── CMakeLists.txt
    ├── test.cpp
    └── test.sh

整个工程代码可以分为4部分， include 文件夹、nvm_engine 文件夹, test 文件夹, judge 文件夹

其中include放置基础依赖性代码, nvm_engine 生成一个lib库(libengine)，test 负责生成一个可执行文件, 调用libengine, judge 与 test类似。

lib目录存放，nvm_engine 生成库文件 libengine。

 

• 二 编写的CmakeLists结构如下:

.
├── CMakeLists.txt
│
├── judge
│   └── CMakeLists.txt
│
├── nvm_engine
│   └──  CMakeLists.txt
│
└── test
    └── CMakeLists.txt　

 

• 三  各个CmakeLists.txt 如下

主目录CmakeLists.txt:

cmake_minimum_required(VERSION 3.3)
project(tair)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)     # 生成json文件, 供coc代码提示使用
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -g -mavx2") # 编译选项

set(ROOT_DIR ${PROJECT_SOURCE_DIR})   # 定义根目录变量
set(LIB_DIR ${ROOT_DIR}/lib) # 定义库目录变量

# 公共依赖的目录
include_directories(
  ${ROOT_DIR}
  ${ROOT_DIR}/include
)

# 链接依赖的目录
link_directories(${LIB_DIR})

#生成 libengine 库 的函数
function (lib_generator name)
  # include 当前目录
  include_directories(
    ${ROOT_DIR}/nvm_engine
  )
  # 指定库生成依赖的文件
  file(GLOB_RECURSE LIB_SRC *.hpp *.cpp)
  # 生成库
  add_library(${name} ${LIB_SRC})
  # 指定链接依赖库
  target_link_libraries(${name} pthread rt z pmem)
  # 设置库生成目录
  set_target_properties(${name} PROPERTIES
    FOLDER "lib"
    ARCHIVE_OUTPUT_DIRECTORY ${LIB_DIR}
    RUNTIME_OUTPUT_DIRECTORY ${LIB_DIR}
    LIBRARY_OUTPUT_DIRECTORY ${LIB_DIR}
  )
endfunction()

#test
function (test_generator name)
  include_directories(
    ${ROOT_DIR}/${name}
  )
  file(GLOB_RECURSE TEST_SRC *.hpp *.cpp)
  add_executable(${name} ${TEST_SRC})
  target_link_libraries(${name} engine pthread rt z pmem)
  set(TEST_DIR ${ROOT_DIR}/${name})
  set_target_properties(${name} PROPERTIES
    FOLDER "test"
    ARCHIVE_OUTPUT_DIRECTORY ${TEST_DIR}
    RUNTIME_OUTPUT_DIRECTORY ${TEST_DIR}
    LIBRARY_OUTPUT_DIRECTORY ${TEST_DIR}
  )
endfunction()

add_subdirectory(nvm_engine)
add_subdirectory(test)
add_subdirectory(judge)

nvm_engine 下 CmakeLists.txt:

lib_generator("engine")

test下 CmakeLists.txt:

test_generator("test")

judege 下 CmakeLists.txt:

test_generator("judge")

 

• 四 主目录下增加Makefile, 便于一键执行

cmake: jsonfile
	cd build; cmake .. ; $(MAKE)

jsonfile:
	mkdir -p build;
	if [ ! -f "compile_commands.json" ]; then ln -s build/compile_commands.json; fi

clean:
	rm -rf build
	rm -rf test/test
	rm -rf judge/judge
	rm -rf lib/libengine.a
	rm -rf compile_commands.json