execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/core/version/build_version_vars_h.py print-version-only OUTPUT_VARIABLE PACKAGE_VERSION)
string(STRIP ${PACKAGE_VERSION} PACKAGE_VERSION)

function(gen_help)
    math(EXPR lastIndex "${ARGC}-1")
    foreach(index RANGE 0 ${lastIndex} 2)
        set(ARG ${ARGV${index}})
        string(LENGTH ${ARG} ARG_LEN)
        while(${ARG_LEN} LESS 40)
            set(ARG "${ARG} ")
            math(EXPR ARG_LEN "${ARG_LEN}+1")
        endwhile()
        set(HELP "${HELP}ARGPACKINGMAGIC  ${ARGV${index}}ARGSPACEMAGIC")
        math(EXPR index "${index}+1")
        set(HELP "${HELP} ${ARGV${index}}")
    endforeach()
    set(HELP ${HELP} PARENT_SCOPE)
endfunction(gen_help)

function(set_package_params params)
    set(PKG_PARAM "${params}" PARENT_SCOPE)
endfunction(set_package_params)

add_custom_target(package)

function(gen_package name dir script)
    math(EXPR lastIndex "${ARGC}-1")
    foreach(index RANGE 3 ${lastIndex})
        set(label ${label};${ARGV${index}})
    endforeach()
    set(ARTIFACT ${CMAKE_INSTALL_PREFIX}/${name})
    set(DIR ${CMAKE_INSTALL_PREFIX}/${dir})
    set(TARGET_NAME make_package_${dir})
    set(WRAPPER ${CMAKE_SOURCE_DIR}/build_system/tools/packaging/makeself_wrapper.sh)
    set(MAKESELF ${CMAKE_SOURCE_DIR}/external/makeself/makeself.sh)
    if ("${PKG_PARAM}" STREQUAL "")
        add_custom_command(OUTPUT ${ARTIFACT}
            COMMAND ${WRAPPER} ${MAKESELF} --needroot ${DIR} ${ARTIFACT} \"${label}\" \"${HELP}\" \"${PACKAGE_VERSION}\" \"${script}\"
        )
    else()
        add_custom_command(OUTPUT ${ARTIFACT}
            COMMAND ${WRAPPER} ${MAKESELF} --needroot\\ ${PKG_PARAM} ${DIR} ${ARTIFACT} \"${label}\" \"${HELP}\" \"${PACKAGE_VERSION}\" \"${script}\"
        )
    endif()
    add_custom_target(${TARGET_NAME} DEPENDS ${ARTIFACT})
    add_dependencies(package ${TARGET_NAME})
endfunction(gen_package)