例子２：有目录的项目
我现在有个文件夹ProjectDate，有如下文件结构
E:.
│ CMakeLists.txt
│
├─include
│ Date.h
│
└─src
date.cpp
main.cpp
include文件夹下是头文件Date.ｈ
#ifndef DATE_H
#define DATE_H
class Date
{
private:
int m_year;
int m_month;
int m_day;
public:
Date(int year, int month, int day);
void SetDate(int year, int month, int day);
int getYear() { return m_year; }
int getMonth() { return m_month; }
int getDay() { return m_day; }
};
#endif
src文件夹下面是源文件Date.cpp和main.cpp
// Date.cpp
#include "Date.h"
// Date constructor
Date::Date(int year, int month, int day)
{
SetDate(year, month, day);
}
// Date member function
void Date::SetDate(int year, int month, int day)
{
m_month = month;
m_day = day;
m_year = year;
}
// Main.cpp
#include <iostream>
#include "date.h"
int main()
{
Date date(2016,05,05);
std::cout<<"Year:"<<date.getYear()<<" Month:"<<date.getMonth()
<<" day:"<<date.getDay()<<std::endl;
}
CMakeLists.txt内容如下：
cmake_minimum_required(VERSION 3.5.2)
project(directory_test)
#Bring the headers, such as Date.h into the project
include_directories(include)
#Can manually add the sources using the set command as follows:
#set(SOURCES src/mainapp.cpp src/Date.cpp)
#However, the file(GLOB...) allows for wildcard additions:
file(GLOB SOURCES "src/*.cpp")
add_executable(testDate ${SOURCES})
- 第一行已经介绍过，设置CMake最低版本
- 第二行project命令设置项目名称
- include_directories() 命令加入头文件所在文件夹
- set(SOURCES … )可以加入文件到SOURCES变量中，但是你需要一个文件一个文件的单独加入，使用范围比较小，所以被注释掉了
- 经常使用的是file()命令来把文件加入到项目中。GLOB表示要将后面表达式"src/*.cpp"表示的所有文件加入到SOURCES变量中
- add_executable使用SOURCES变量生成testDate可执行文件
PROJECT指令的语法是：
PROJECT(projectname [CXX] [C] [Java])
用于定义工程名称，并可指定工程支持的语言，默认表示支持所有语言。
这次我们使用cmake命令行，依然建立build文件夹，进入build。首先运行cmake --help看看都有哪些参量可以使用。
> cmake --help
Usage
cmake [options] <path-to-source>
cmake [options] <path-to-existing-build>
Specify a source directory to (re-)generate a build system for it in the
current working directory. Specify an existing build directory to
re-generate its build system.
Options
-C <initial-cache> = Pre-load a script to populate the cache.
-D <var>[:<type>]=<value> = Create a cmake cache entry.
-U <globbing_expr> = Remove matching entries from CMake cache
-G <generator-name> = Specify a build system generator.
-T <toolset-name> = Specify toolset name if supported by
generator.
-A <platform-name> = Specify platform name if supported by
generator.
-Wdev = Enable developer warnings.
-Wno-dev = Suppress developer warnings.
-Werror=dev = Make developer warnings errors.
-Wno-error=dev = Make developer warnings not errors.
-Wdeprecated = Enable deprecation warnings.
-Wno-deprecated = Suppress deprecation warnings.
-Werror=deprecated = Make deprecated macro and function warni
errors.
-Wno-error=deprecated = Make deprecated macro and function warni
not errors.
-E = CMake command mode.
-L[A][H] = List non-advanced cached variables.
--build <dir> = Build a CMake-generated project binary t
-N = View mode only.
-P <file> = Process script mode.
--find-package = Run in pkg-config like mode.
--graphviz=[file] = Generate graphviz of dependencies, see
CMakeGraphVizOptions.cmake for more.
--system-information [file] = Dump information about this system.
--debug-trycompile = Do not delete the try_compile build tree
Only useful on one try_compile at a time
--debug-output = Put cmake in a debug mode.
--trace = Put cmake in trace mode.
--trace-expand = Put cmake in trace mode with variable
expansion.
--warn-uninitialized = Warn about uninitialized values.
--warn-unused-vars = Warn about unused variables.
--no-warn-unused-cli = Don't warn about command line options.
--check-system-vars = Find problems with variable usage in sys
files.
--help,-help,-usage,-h,-H,/? = Print usage information and exit.
--version,-version,/V [<f>] = Print version number and exit.
--help-full [<f>] = Print all help manuals and exit.
--help-manual <man> [<f>] = Print one help manual and exit.
--help-manual-list [<f>] = List help manuals available and exit.
--help-command <cmd> [<f>] = Print help for one command and exit.
--help-command-list [<f>] = List commands with help available and ex
--help-commands [<f>] = Print cmake-commands manual and exit.
--help-module <mod> [<f>] = Print help for one module and exit.
--help-module-list [<f>] = List modules with help available and exi
--help-modules [<f>] = Print cmake-modules manual and exit.
--help-policy <cmp> [<f>] = Print help for one policy and exit.
--help-policy-list [<f>] = List policies with help available and ex
--help-policies [<f>] = Print cmake-policies manual and exit.
--help-property <prop> [<f>] = Print help for one property and exit.
--help-property-list [<f>] = List properties with help available and
exit.
--help-properties [<f>] = Print cmake-properties manual and exit.
--help-variable var [<f>] = Print help for one variable and exit.
--help-variable-list [<f>] = List variables with help available and e
--help-variables [<f>] = Print cmake-variables manual and exit.
Generators
The following generators are available on this platform:
Visual Studio 14 2015 [arch] = Generates Visual Studio 2015 project fil
Optional [arch] can be "Win64" or "ARM".
Visual Studio 12 2013 [arch] = Generates Visual Studio 2013 project fil
Optional [arch] can be "Win64" or "ARM".
Visual Studio 11 2012 [arch] = Generates Visual Studio 2012 project fil
Optional [arch] can be "Win64" or "ARM".
Visual Studio 10 2010 [arch] = Generates Visual Studio 2010 project fil
Optional [arch] can be "Win64" or "IA64"
Visual Studio 9 2008 [arch] = Generates Visual Studio 2008 project fil
Optional [arch] can be "Win64" or "IA64"
Visual Studio 8 2005 [arch] = Generates Visual Studio 2005 project fil
Optional [arch] can be "Win64".
Visual Studio 7 .NET 2003 = Generates Visual Studio .NET 2003 projec
files.
Visual Studio 7 = Deprecated. Generates Visual Studio .NE
2002 project files.
Visual Studio 6 = Deprecated. Generates Visual Studio 6
project files.
Borland Makefiles = Generates Borland makefiles.
NMake Makefiles = Generates NMake makefiles.
NMake Makefiles JOM = Generates JOM makefiles.
Green Hills MULTI = Generates Green Hills MULTI files
(experimental, work-in-progress).
MSYS Makefiles = Generates MSYS makefiles.
MinGW Makefiles = Generates a make file for use with
mingw32-make.
Unix Makefiles = Generates standard UNIX makefiles.
Ninja = Generates build.ninja files.
Watcom WMake = Generates Watcom WMake makefiles.
CodeBlocks - MinGW Makefiles = Generates CodeBlocks project files.
CodeBlocks - NMake Makefiles = Generates CodeBlocks project files.
CodeBlocks - Ninja = Generates CodeBlocks project files.
CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.
CodeLite - MinGW Makefiles = Generates CodeLite project files.
CodeLite - NMake Makefiles = Generates CodeLite project files.
CodeLite - Ninja = Generates CodeLite project files.
CodeLite - Unix Makefiles = Generates CodeLite project files.
Eclipse CDT4 - MinGW Makefiles
= Generates Eclipse CDT 4.0 project files.
Eclipse CDT4 - NMake Makefiles
= Generates Eclipse CDT 4.0 project files.
Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files.
Eclipse CDT4 - Unix Makefiles= Generates Eclipse CDT 4.0 project files.
Kate - MinGW Makefiles = Generates Kate project files.
Kate - NMake Makefiles = Generates Kate project files.
Kate - Ninja = Generates Kate project files.
Kate - Unix Makefiles = Generates Kate project files.
Sublime Text 2 - MinGW Makefiles
= Generates Sublime Text 2 project files.
Sublime Text 2 - NMake Makefiles
= Generates Sublime Text 2 project files.
Sublime Text 2 - Ninja = Generates Sublime Text 2 project files.
Sublime Text 2 - Unix Makefiles
= Generates Sublime Text 2 project files.
我们想生成Visual Studio 14 2015 Win64项目文件，所以运行
cmake -G "Visual Studio 14 2015 Win64" ..
> cmake -G "Visual Studio 14 2015 Win64" ..
-- The C compiler identification is MSVC 19.0.23918.0
-- The CXX compiler identification is MSVC 19.0.23918.0
-- Check for working C compiler using: Visual Studio 14 2015 Win64
-- Check for working C compiler using: Visual Studio 14 2015 Win64 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Visual Studio 14 2015 Win64
-- Check for working CXX compiler using: Visual Studio 14 2015 Win64 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: E:/Playground/CMakeExamples/ProjectDate/build
msbuild testDate.vcxproj
编译通过，运行
> Debug\testDate.exe
Year:2016 Month:5 day:5
