Description
The same C++ codebase needs a Visual Studio solution on Windows, a Makefile on Linux, and an Xcode project for the colleague on a Mac. Maintaining three project files means adding one source file in three places, and eventually forgetting one.
CMake inverts the problem: you write one CMakeLists.txt and it generates the project files. The same description produces a VS solution on Windows, Ninja or Make on Linux, an Xcode project on macOS. Dependency discovery, compiler flags, install rules and packaging all live in that one file. It has become the default answer in the C++ world — most open-source libraries build with the same three commands.
One description, every generator: Write CMakeLists.txt once and emit Visual Studio, Xcode, Makefile or Ninja projects as needed.
Dependency handling: find_package and FetchContent locate system libraries or pull sources directly, smoothing over per-platform path differences.
CTest and CPack: Run tests and produce installers from the same system: NSIS on Windows, dmg on macOS, deb and rpm on Linux.
Graphical configurator: cmake-gui lists every option in a table, which spares you memorising flags for cross builds and feature toggles.
Broad toolchain support: MSVC, GCC, Clang, MinGW and cross-compilation toolchains, widely used in embedded and mobile projects too.
CMake inverts the problem: you write one CMakeLists.txt and it generates the project files. The same description produces a VS solution on Windows, Ninja or Make on Linux, an Xcode project on macOS. Dependency discovery, compiler flags, install rules and packaging all live in that one file. It has become the default answer in the C++ world — most open-source libraries build with the same three commands.
Features
One description, every generator: Write CMakeLists.txt once and emit Visual Studio, Xcode, Makefile or Ninja projects as needed.
Dependency handling: find_package and FetchContent locate system libraries or pull sources directly, smoothing over per-platform path differences.
CTest and CPack: Run tests and produce installers from the same system: NSIS on Windows, dmg on macOS, deb and rpm on Linux.
Graphical configurator: cmake-gui lists every option in a table, which spares you memorising flags for cross builds and feature toggles.
Broad toolchain support: MSVC, GCC, Clang, MinGW and cross-compilation toolchains, widely used in embedded and mobile projects too.
