Generating Build Environment with CMakesuggest change
CMake generates build environments for nearly any compiler or IDE from a single project definition. The following examples will demonstrate how to add a CMake file to the cross-platform “Hello World” C++ code.
CMake files are always named “CMakeLists.txt” and should already exist in every project’s root directory (and possibly in sub-directories too.) A basic CMakeLists.txt file looks like:
cmake_minimum_required(VERSION 2.4) project(HelloWorld) add_executable(HelloWorld main.cpp)
See it live on Coliru.
This file tells CMake the project name, what file version to expect, and instructions to generate an executable called “HelloWorld” that requires
Generate a build environment for your installed compiler/IDE from the command line:
Build the application with:
cmake --build .
This generates the default build environment for the system, depending on the OS and installed tools. Keep source code clean from any build artifacts with use of “out-of-source” builds:
mkdir build cd build cmake .. cmake --build .
CMake can also abstract the platform shell’s basic commands from the previous example:
cmake -E make_directory build cmake -E chdir build cmake .. cmake --build build
CMake includes generators for a number of common build tools and IDEs. To generate makefiles for Visual Studio’s
cmake -G "NMake Makefiles" .. nmake