Mastering Cmake Pdf 🌟 ✨

Usage: cmake --preset debug && cmake --build --preset debug | Pitfall | Solution | |---------|----------| | Using link_directories() | Use absolute paths or find_library + target_link_libraries | | Modifying CMAKE_CXX_FLAGS directly | Use target_compile_options or generator expressions | | Forgetting to mark header-only libs as INTERFACE | Use add_library(MyLib INTERFACE) | | Hardcoding paths to dependencies | Use find_package + config-mode | | Using file(GLOB) to collect sources | Explicitly list sources; glob misses new files | | Mixing build types (Debug/Release) | Out-of-source builds + presets | Real-World Example: A Small Library with Tests libs/math/CMakeLists.txt :

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#include <catch2/catch.hpp> #include "math/add.h" TEST_CASE("Addition works", "[math]") REQUIRE(add(2, 2) == 4); mastering cmake pdf

project/ ├── CMakeLists.txt (top-level) ├── cmake/ │ └── FindMyCustomLib.cmake ├── src/ │ ├── CMakeLists.txt │ └── app.cpp ├── libs/ │ ├── core/ │ │ ├── CMakeLists.txt │ │ └── core.cpp │ └── utils/ │ ├── CMakeLists.txt │ └── utils.h (header-only) └── tests/ ├── CMakeLists.txt └── test_core.cpp cmake_minimum_required(VERSION 3.20) project(MyProject VERSION 1.0.0 LANGUAGES CXX) Options option(BUILD_TESTS "Build unit tests" ON) option(BUILD_SHARED_LIBS "Build shared libs instead of static" OFF) Global settings set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_EXTENSIONS OFF) Add subdirectories add_subdirectory(libs/core) add_subdirectory(libs/utils) add_subdirectory(src) Usage: cmake --preset debug && cmake --build --preset

find_package(OpenCV 4.5 REQUIRED) target_link_libraries(my_app PRIVATE opencv::core opencv::imgproc) # Propagates includes automatically cmake/FindMyLib.cmake : #include "math/add.h" TEST_CASE("Addition works"