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David Velho
David Velho

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Include custom CMake modules

#cmake #module #cpp

Lets abstract some configuration of our project to a user defined Config.cmake file.

Let's assume your project uses CMake and has a directory structure similar to the one shown below

C++ project with directory structure with custom CMake modules

The Config.cmake file has the following stuff -

set_target_properties( ${CMAKE_PROJECT_NAME} PROPERTIES CXX_STANDARD 17 CXX_STANDARD_REQUIRED YES CXX_EXTENSIONS NO) include(CheckIPOSupported) check_ipo_supported(RESULT result) if(result) set_target_properties(${CMAKE_PROJECT_NAME} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE) endif() find_program(CCACHE_PROGRAM ccache) if(CCACHE_PROGRAM) set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}") set(CMAKE_CUDA_COMPILER_LAUNCHER "${CCACHE_PROGRAM}") # CMake 3.9+ endif()
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Then, in our root CMakeLists.txt file, lets add the following lines -

list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Modules")
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This line must go after your project configuration

And finally,

include(Config)
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Where Config is the name of file with our abstractions

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