cmake 学习笔记

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Step1: 基本开始

文件结构：

----Tutorial

|----build

|----CMakeLists.txt

|----tutorial.cpp

CMakeLists.txt:

cmake_minimum_required (VERSION 2.6)project (Tutorial)add_executable(Tutorial tutorial.cxx)

tutorial.cpp: 一个计算平方根的例子

// A simple program that computes the square root of a number#include <stdio.h>#include <stdlib.h>#include <math.h>int main (int argc, char *argv[]){  if (argc < 2)    {    fprintf(stdout,"Usage: %s number\n",argv[0]);    return 1;    }  double inputValue = atof(argv[1]);  double outputValue = sqrt(inputValue);  fprintf(stdout,"The square root of %g is %g\n",          inputValue, outputValue);  return 0;}

build 目录下cmake .. （cmake 后面是CMakeLists.txt的相对路径，这里是在build上一级目录中，所以是".."）

make

运行build下生成的可执行文件：

./Tutorial 9 （计算9的平方根）

版本控制：

文件结构：

----Tutorial

|----build

|----CMakeLists.txt

|----tutorial.cpp

|----Tutorial.h.in

文件结构：

----Tutorial

|----build

|----CMakeLists.txt

|----tutorial.cpp

|----Tutorial.h.in

CMakeLists.txt:

cmake_minimum_required (VERSION 2.6)project (cmaketest)# The version number.set (Tutorial_VERSION_MAJOR 1)set (Tutorial_VERSION_MINOR 0) # configure a header file to pass some of the CMake settings# to the source codeconfigure_file (  "${PROJECT_SOURCE_DIR}/TutorialConfig.h.in"  "${PROJECT_BINARY_DIR}/TutorialConfig.h"  ) # add the binary tree to the search path for include files# so that we will find TutorialConfig.hinclude_directories("${PROJECT_BINARY_DIR}") # add the executableadd_executable(Tutorial tutorial.cpp)

Tutorial.h.in

// the configured options and settings for Tutorial#define Tutorial_VERSION_MAJOR @Tutorial_VERSION_MAJOR@#define Tutorial_VERSION_MINOR @Tutorial_VERSION_MINOR@

tutorial.cpp:

// A simple program that computes the square root of a number#include <stdio.h>#include <stdlib.h>#include <math.h>#include "TutorialConfig.h"int main (int argc, char *argv[]){  if (argc < 2)    {    fprintf(stdout,"%s Version %d.%d\n",            argv[0],            Tutorial_VERSION_MAJOR,            Tutorial_VERSION_MINOR);    fprintf(stdout,"Usage: %s number\n",argv[0]);    return 1;    }  double inputValue = atof(argv[1]);  double outputValue = sqrt(inputValue);  fprintf(stdout,"The square root of %g is %g\n",          inputValue, outputValue);  return 0;}

build目录下cmake ..

make

执行：./Tutorial

输出版本信息

./Tutorial Version 2.0
Usage: ./Tutorial number

Step 2: 添加库

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