light/tools/cmake/functions.cmake

function(add_library_module libname)
    set(PUBLIC_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/public_includes")
    file(MAKE_DIRECTORY "${PUBLIC_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/public/"
         "${PUBLIC_INCLUDE_DIR}/${libname}" SYMBOLIC)

    if("${ARGN}" STREQUAL "") # Header only library
        message("Adding INTERFACE library ${libname}")
        add_library(${libname} INTERFACE)
        target_include_directories(${libname} INTERFACE ${PUBLIC_INCLUDE_DIR})

        target_link_libraries(${libname} INTERFACE std)

    else() # Compiled library
        set(source_files)
        set(source_directory "${CMAKE_CURRENT_SOURCE_DIR}/private")
        foreach(source_file ${ARGN})
            list(APPEND source_files "${source_directory}/${source_file}")
        endforeach()

        message("Adding library ${libname} with source files: ${source_files}")
        add_library(${libname} ${source_files})

        set(PRIVATE_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/private_includes")
        file(MAKE_DIRECTORY "${PRIVATE_INCLUDE_DIR}")
        file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/private/"
             "${PRIVATE_INCLUDE_DIR}/${libname}" SYMBOLIC)

        target_include_directories(
            ${libname}
            PUBLIC ${PUBLIC_INCLUDE_DIR}
            PRIVATE ${PRIVATE_INCLUDE_DIR})

        target_link_libraries(${libname} PUBLIC std)
    endif()

endfunction()

function(add_executable_module exename)
    set(source_files)
    set(source_directory "${CMAKE_CURRENT_SOURCE_DIR}/private")
    foreach(source_file ${ARGN})
        list(APPEND source_files "${source_directory}/${source_file}")
    endforeach()

    message("Adding executable ${exename} with source files: ${source_files}")

    set(PUBLIC_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/public_includes")
    file(MAKE_DIRECTORY "${PUBLIC_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/public/"
         "${PUBLIC_INCLUDE_DIR}/${exename}" SYMBOLIC)
    set(PRIVATE_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/private_includes")
    file(MAKE_DIRECTORY "${PRIVATE_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/private/"
         "${PRIVATE_INCLUDE_DIR}${exename}" SYMBOLIC)

    add_executable(${exename} ${source_files})
    target_link_libraries(${exename} PRIVATE std)
    target_include_directories(${exename} PRIVATE ${PUBLIC_INCLUDE_DIR}
                                                  ${PRIVATE_INCLUDE_DIR})
endfunction()

function(add_test_module target_lib_name)
    if(NOT ${ENABLE_UNIT_TESTS})
        return()
    endif()

    set(source_files)
    set(source_directory "${CMAKE_CURRENT_SOURCE_DIR}/private")
    foreach(source_file ${ARGN})
        list(APPEND source_files "${source_directory}/${source_file}")
    endforeach()

    message(
        "Adding test executable ${target_lib_name}_tests with source files: ${source_files}"
    )

    set(PUBLIC_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/public_includes")
    file(MAKE_DIRECTORY "${PUBLIC_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/public/"
         "${PUBLIC_INCLUDE_DIR}/${target_lib_name}" SYMBOLIC)
    set(PRIVATE_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/private_includes")
    file(MAKE_DIRECTORY "${PRIVATE_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/private/"
         "${PRIVATE_INCLUDE_DIR}/${target_lib_name}" SYMBOLIC)

    add_executable(${target_lib_name}_tests ${source_files})
    target_link_libraries(${target_lib_name}_tests PRIVATE ${target_lib_name}
                                                           std test)
    target_include_directories(
        ${target_lib_name}_tests
        PRIVATE ${PUBLIC_INCLUDE_DIR}
        PRIVATE ${PRIVATE_INCLUDE_DIR})
endfunction()

function(add_fuzz_module target_lib_name)
    if(NOT ${ENABLE_FUZZ_TESTS})
        return()
    endif()

    set(source_files)
    set(source_directory "${CMAKE_CURRENT_SOURCE_DIR}/private")
    foreach(source_file ${ARGN})
        list(APPEND source_files "${source_directory}/${source_file}")
    endforeach()

    message(
        "Adding fuzz executable ${target_lib_name}_fuzz with source files: ${source_files}"
    )

    set(PUBLIC_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/public_includes")
    file(MAKE_DIRECTORY "${PUBLIC_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/public/"
         "${PUBLIC_INCLUDE_DIR}/${target_lib_name}" SYMBOLIC)
    set(PRIVATE_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}/private_includes")
    file(MAKE_DIRECTORY "${PRIVATE_INCLUDE_DIR}")
    file(CREATE_LINK "${CMAKE_CURRENT_SOURCE_DIR}/private/"
         "${PRIVATE_INCLUDE_DIR}/${target_lib_name}" SYMBOLIC)

    add_executable(${target_lib_name}_fuzz ${source_files})
    target_link_libraries(${target_lib_name}_fuzz PRIVATE ${target_lib_name}
                                                          std fuzz_test)
    target_link_options(${target_lib_name}_fuzz PRIVATE -fsanitize=fuzzer)
    target_compile_options(${target_lib_name}_fuzz PRIVATE -fsanitize=fuzzer)
    target_include_directories(
        ${target_lib_name}_fuzz
        PRIVATE ${PUBLIC_INCLUDE_DIR}
        PRIVATE ${PRIVATE_INCLUDE_DIR})
endfunction()

function(add_option option help)
    option(${option} ${help})

    if(${option})
        message(STATUS "${option}: ON")
        add_compile_definitions(${option}=1)
    else()
        message(STATUS "${option}: OFF")
    endif()
endfunction()