It creates the necessary instruction files for your system to build your project.įor example, if you are developing a program for Windows and you happen to have Visual Studio installed, CMake can generate a Visual Studio solution that you can use to compile the project. What Does It Do Exactly?ĬMake is a build system generator. This is where CMake comes in: it lets you define the representation of your project, and how to build it in a universal way, meaning that any environment with CMake support can compile your programs and libraries. sln) file that tells Windows how to compile your program. Linux and other operating systems will not know how to “interpret” the Visual Studio solution (. However, what happens if you try and take your CPP project over to a Linux machine? You certainly will not be able to compile it because all you are left with, from the OS point of view, are files. Compiling and running your program is as easy as pressing the “play” button in the IDE. Writing software for Windows is very easy: just download and install Microsoft Visual Studio and off you go. Unsurprisingly, these are not the only IDEs available that can build C++ programs and libraries, but what is the one thing that most popular IDEs have in common? CMake support. Maybe MS Visual Studio, VS Code, or CLion. If you have just started learning C++, you are probably using a popular IDE to edit and build (compile) your programs. We have written the simplest C++ program, but how do we build it? In this article, I will give a brief description of CMake, a build automation tool that allows users to build software on different platforms.
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