CMakeLists.txt

cmake_minimum_required(VERSION 3.14)

project(yaml_cpp_struct VERSION "0.0.1" LANGUAGES CXX)

if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
    set(IS_TOPLEVEL_PROJECT TRUE)
else()
    set(IS_TOPLEVEL_PROJECT FALSE)
endif()

option(YAML_CPP_STRUCT_OPT_INSTALL "Generate and install yaml_cpp_struct target" ${IS_TOPLEVEL_PROJECT})

include(CMakePackageConfigHelpers)

add_library(${PROJECT_NAME} INTERFACE)
add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
target_include_directories(${PROJECT_NAME}
        INTERFACE
            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
            $<INSTALL_INTERFACE:include>)

write_basic_package_version_file(${PROJECT_NAME}ConfigVersion.cmake
        VERSION ${PROJECT_VERSION}
        COMPATIBILITY AnyNewerVersion
        ARCH_INDEPENDENT)

if(YAML_CPP_STRUCT_OPT_INSTALL)
    include(GNUInstallDirs)

    install(TARGETS ${PROJECT_NAME}
            EXPORT ${PROJECT_NAME}Config)

    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
            DESTINATION lib/cmake/${PROJECT_NAME})

    install(EXPORT ${PROJECT_NAME}Config
            NAMESPACE ${PROJECT_NAME}::
            DESTINATION lib/cmake/${PROJECT_NAME})

    install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include
            DESTINATION .)

    export(EXPORT ${PROJECT_NAME}Config
            NAMESPACE ${PROJECT_NAME}::)

    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/package.xml
            DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME})
endif()