Cmake tutorial series -02- generating binaries using cmake code

1.Cmake Installation

• Reference resources ：Cmake Installation and upgrade （Ubuntu）

2.Win10 Next use CMake GUI

Win10 The installation files ：

The created directory and code are as follows ：

• CMakeLists.txt

cmake_minimum_required(VERSION 3.0)
project(sample CXX)
add_library(sample sample.cpp)
add_executable(sample_exe sample_exe.cpp)

• sample.cpp

#include <iostream>

int print_hello_world()
{
    
    std::cout << "hello world!" << std::endl;

    return 0;
}

• The directory structure is as follows ： Pay attention to creating one more build The directory stores intermediate files and final binary files
  

Click on “Configure

• Mine vs yes 2019, stay Configure I chose
  
  Click on “Configure” Dexter “Generate”.
  

Click on “Generate” Dexter “Open Projrct”.

• It can be seen that for Visual Studio The configuration of has been completely generated , At this point, you only need to build ALL_BUILD Library can be generated sample And executables sample_exe
  
  

2.win Use the command line to build the project

• Reference resources ：cmake(1)

Use the code file above , Open the command line , And enter the following command ：

E:\CmakeTest>cmake.exe -S E:\\CmakeTest -B E:\\CmakeTest\build -G "Visual Studio 16 2019" -A x64
-- Selecting Windows SDK version 10.0.19041.0 to target Windows 10.0.19044.
-- The CXX compiler identification is MSVC 19.29.30141.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/BuildTools/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: E:/CmakeTest/build

Execute the following command to generate the library file and binary program ：

E:\CmakeTest>cmake --build  E:\\CmakeTest\build
 be used for  .NET Framework  Of  Microsoft (R)  Build engine version  16.11.2+f32259642
 copyright (C) Microsoft Corporation. All rights reserved .

  Checking Build System
  sample_exe.cpp
  sample.vcxproj -> E:\CmakeTest\build\Debug\sample.lib
  sample_exe.cpp
  sample_exe.vcxproj -> E:\CmakeTest\build\Debug\sample_exe.exe
  Building Custom Rule E:/CmakeTest/CMakeLists.txt

3. Several important command line arguments

-S

• top CMakeLists.txt（ contain project Statement ） Location path .

-B

• Store temporary compiled binary files （.obj、.ilk etc. ） The configuration file path corresponding to the compiler .

-G

• Compiler name

-A

• Architecture name

-D

• Use this variable to add to cmake Pass in various parameters . Include options and overrides cmake Various default variable values provided .

--toolchain

• cmake toolchain File path .

--install-prefix

• The binary storage path of the installation .

--trace / --trace-expand

• Used during commissioning , Used to print executed cmake Code and line number . Otherwise, only the function is output message The content in .

--build

• Use cmake Directly call the compiler to compile the project .

--config

• Select the project configuration type to compile .

--install

• Install the compiled binaries to CMAKE_INSTALL_PREFIX in .

• Reference resources ：CMake Tutorial series -02- Use cmake Code generation binary