![]() Say we have the same set of source/header files as in the example. This example shows how to deploy the "Hello World" program as a library and how to link it with other targets. Each only handles as much of the build as is present in the current directory.įor official resources on CMake, see CMake's Documentation and Tutorial. The final CMakeLists files can be very clear and straightforward, because each is so limited in scope. Locate a library which is somewhere in the source tree.Generate a file, based on the specific build configuration.Define variables that the buildsystem will use in this directory, and in its subdirectories.Add a filepath to the include-path used during build.Build a library or an executable out of some of the source files in this directory.It also defines which subdirectories CMake should handle as well. Each directory's CMakeLists file defines what the buildsystem should do in that specific directory. On Linux, CMake generates Makefiles on Windows, it can generate Visual Studio projects, and so on.īuild behavior is defined in CMakeLists.txt files - one in every directory of the source code. It accomplishes this by pairing with different platform-specific buildsystems CMake is an intermediate step, that generates build input for different specific platforms. The source code of this sample project canbe found at CMakeLists.txt and test.CMake is a tool for defining and managing code builds, primarily for C++.ĬMake is a cross-platform tool the idea is to have a single definition of how the project is built - which translates into specific build definitions for any supported platform. The first command will creates CMake configuration files inside folder build and the second one will generate the output program hello in bin folder. To build your project hello, just do $ cmake -H. At this point, you will have the folder with the following files: $ ls Now, let build the source code with CMake. # Set the output folder where your program will be created test.cpp # include using namespace std Īnd you saved it as test.cpp, then to compile it in CMake you should create a txt file named CMakeLists.txt # Specify the minimum version for CMake CMake will do the job of Makefile from now. So I assume that you know C++ and what the Makefile is. To install CMake in Linux, just simply do on your terminal # For Ubuntu If you have some troubles with gcc and Makefile, just move out to CMake. In a short conclusion, CMake help you to manage and build your source codes effectively. This information is gathered into the cache, which may be changed by the user prior to the generation of the native build files. ![]() For example, when CMake runs, it locates include files, libraries, and executables, and may encounter optional build directives. Another nice feature of CMake is that it generates a cache file that is designed to be used with a graphical editor. CMake also supports static and dynamic library builds. CMake supports in-place and out-of-place builds, and can therefore support multiple builds from a single source tree. CMake can generate a native build environment that will compile source code, create libraries, generate wrappers and build executables in arbitrary combinations. Simple configuration files placed in each source directory (called CMakeLists.txt files) are used to generate standard build files (e.g., makefiles on Unix and projects/workspaces in Windows MSVC) which are used in the usual way. ![]() Unlike many cross-platform systems, CMake is designed to be used in conjunction with the native build environment. What is CMake?ĬMake is an extensible, open-source system that manages the build process in an operating system and in a compiler-independent manner.
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