The next section discusses how to tweak the configuration. However, usually you need some tweaking before invoking make. In the simplest case, this is all you need to do to build a project. When you run the cmake command, it reads a file called CMakeLists.txt from /path/to/project/directory and generates a lot of files in /path/to/build/directory according to the settings in CMakeLists.txt (including the Makefile). This is a good practice as it won’t mess with your source folder and you could also build multiple variants in multiple folders. Notice that we have a separate folder for the build. Now suppose you have a project with CMake as the build system, you need to do the following $ mkdir /path/to/build/directory # you could create the directory at anywhere you like For example, you would install CMake on Ubuntu with $ apt-get install cmake If it’s not, it could be easily installed on Linux or macOS using package managers. So how exactly do we use CMake? Well, first you have to make sure CMake is installed. As our focus for this post is on how to use CMake, details on how to write CMake files to accomplish all these are not discussed here. Specifically, CMake lets you easily handle things like building on multiple platform, supporting multiple compilers, supporting optional dependencies, etc. However, if you have a large project with somewhat complex compilation steps, CMake will be a better tool. Also, Make is useful for some simple automation tasks. In that case, using CMake is not really necessary. Well, I do agree that Make can be quite handy if you are working on a small codebase which doesn’t have a lot of logic in building the project. If you know what Makefile is, you may wonder why someone would use CMake when there is already Make. Specifically, I wanna talk about how CMake should be used, which can be a bit confusing for someone using CMake for the first time. I would like to share what I’ve learnt here in this blog post. ![]() Therefore, I decided to learn more about CMake and fix the problem. However, there were some problems with the CMake system which is used in the project. The general template for such a project can have the following structure.Ĭmake_minimum_required ( VERSION 2.8) SET( CMAKE_CONFIGURATION_TYPES "Debug Release MinSizeRel RelWithDebInfo" CACHE STRING "" FORCE) if ( NOT CMAKE_BUILD_TYPE) set ( CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel.Today I started working on an existing CUDA project and the first thing I did was to try to build the project. PC project - includes unit tests, a library of communication, etc.'. ![]() CMake project s a sort of scripting language that defines the project files, compiler, flag, etc.' For embedded projects, I usually maintain two sub-projects: It can create projects to different kinds of IDEs like eclipse and visual studio, and depend on a selected IDE it makes appropriate project files. ![]() ![]() The CMake tools is a generator of build systems. gnu make tool - used by cmake and eclipseįor convenience, it is better to install the software above in the global path variable.The first stage is to install the following software on windows. Hence, I describe here the stages that I had to do to import a CMake project from Linux to eclipse that run on windows. Still, when I had to switch it to eclipse on windows environment, that was a challenging task. Usually, I work in a Linux environment in the terminal where everything is installed correctly in its place, and things work great. For example, a shared source code that simultaneously able to recompile in both processors when any change occurs in these shared files. Usually, the MCU has some communication with other processors (usually PC), and CMake also allows easy integration between both projects: MCU and HOST. CMake is a powerful tool to manage c/c++ projects, and I prefer to use it in on my embedded projects also.
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