add_custom_command(
    OUTPUT ${gensrcdict} ${rootmapname}
    COMMAND ${ROOT_genreflex_CMD}
    ARGS ${headerfiles} -o ${gensrcdict} ${rootmapopts} --select=${selectionfile}
         --gccxmlpath=${GCCXML_home}/bin ${ARG_OPTIONS}
         "-I$<JOIN:$<REMOVE_DUPLICATES:$<FILTER:${include_dirs},EXCLUDE,^$>>,;-I>"
         "$<$<BOOL:$<JOIN:${definitions},>>:-D$<JOIN:${definitions},;-D>>"
    DEPENDS ${headerfiles} ${selectionfile} ${ARG_DEPENDS}

    COMMAND_EXPAND_LISTS
    )

target_sources(freertos_kernel PRIVATE
        # If FREERTOS_HEAP is digit between 1 .. 5 - it is heap number, otherwise - it is path to custom heap source file
        $<IF:$<BOOL:$<FILTER:${FREERTOS_HEAP},EXCLUDE,^[1-5]$>>,${FREERTOS_HEAP},portable/MemMang/heap_${FREERTOS_HEAP}.c>
    )