dak_script/CMakeLists.txt at master · trobol/dak_script · GitHub

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# https://cliutils.gitlab.io/modern-cmake/chapters/basics/structure.html
# https://gitlab.com/CLIUtils/modern-cmake/-/blob/master/examples/extended-project/CMakeLists.txt
cmake_minimum_required(VERSION 3.4.3)
project(dak_script)


# FetchContent added in CMake 3.11, downloads during the configure step
include(FetchContent)
# FetchContent_MakeAvailable was not added until CMake 3.14
if(${CMAKE_VERSION} VERSION_LESS 3.14)
    include(cmake/add_FetchContent_MakeAvailable.cmake)
endif()


set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g --save-temps")


# Only do these if this is the main project, and not if it is included through add_subdirectory
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)

    # Optionally set things like CMAKE_CXX_STANDARD, CMAKE_POSITION_INDEPENDENT_CODE here

    # Let's ensure -std=c++xx instead of -std=g++xx
    set(CMAKE_CXX_EXTENSIONS OFF)

    # Let's nicely support folders in IDE's
    set_property(GLOBAL PROPERTY USE_FOLDERS ON)

    # Testing only available if this is the main app
    # Note this needs to be done in the main CMakeLists
    # since it calls enable_testing, which must be in the
    # main CMakeLists.
    option(BUILD_TESTING "" OFF)
    include(CTest)

    # Docs only available if this is the main app
    #find_package(Doxygen)
    #if(Doxygen_FOUND)
	#add_subdirectory(docs)
    #else()
	#message(STATUS "Doxygen not found, not building docs")
    #endif()
endif()


set(CMAKE_CXX_STANDARD 17)  # for c++17

set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

### Require out-of-source builds
file(TO_CMAKE_PATH "${PROJECT_BINARY_DIR}/CMakeLists.txt" LOC_PATH)
if(EXISTS "${LOC_PATH}")
    message(FATAL_ERROR "You cannot build in a source directory (or any directory with a CMakeLists.txt file). Please use the build script. Feel free to remove CMakeCache.txt and CMakeFiles.")
endif()


add_subdirectory(src)


if((CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME OR MODERN_CMAKE_BUILD_TESTING) AND BUILD_TESTING)
    add_subdirectory(tests)
    message(STATUS "tests enabled")
endif()