cmake_minimum_required(VERSION 3.9)
set(NAME "Vec3")
project(${NAME})

# Check for CUDA
include(CheckLanguage)
check_language(CUDA)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

add_compile_options(-Wall -Wextra -Wpedantic)

set(CMAKE_CXX_STANDARD 17)

include_directories(include)
add_subdirectory(include)

if (PROJECT_IS_TOP_LEVEL)
    enable_testing()
    add_subdirectory(tests)

    # Doxygen Build
    option(BUILD_DOC "Build Documentation" ON)

    find_package(Doxygen)
    if(DOXYGEN_FOUND)
        set(BUILD_DOC_DIR ${CMAKE_SOURCE_DIR}/build/docs)
        if(NOT EXISTS ${BUILD_DOC_DIR})
            file(MAKE_DIRECTORY ${BUILD_DOC_DIR})
        endif()

        set(DOXYGEN_IN ${CMAKE_CURRENT_SOURCE_DIR}/docs/Doxyfile)
        set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
        configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)

        message("Doxygen buld started")
        add_custom_target(Doxygen_${NAME} ALL
                COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
                COMMENT "Generating API documentation with Doxygen"
                VERBATIM)
    else(DOXYGEN_FOUND)
        message("Doxygen needs to be installed to generate the documentation.")
    endif(DOXYGEN_FOUND)
endif()