The latest development version of this page may be more current than this released 2.5.0 version.

Library Configuration Options

Kconfig files describe build-time configuration options (called symbols in Kconfig-speak), how they’re grouped into menus and sub-menus, and dependencies between them that determine what configurations are valid.

Kconfig files appear throughout the directory tree. For example, subsys/power/Kconfig defines power-related options.

This documentation is generated automatically from the Kconfig files by the gen_kconfig_rest.py script. Click on symbols for more information.

Configuration Options

Symbol name	Help/prompt
CONFIG_APP_LINK_WITH_LVGL	Add LVGL header files to the ‘app’ include path. It may be disabled if the include paths for LVGL are causing aliasing issues for ‘app’.
CONFIG_APP_LINK_WITH_POSIX_SUBSYS	Add POSIX subsystem header files to the ‘app’ include path.
CONFIG_BASE64	Enable base64 encoding and decoding functionality
CONFIG_CBPRINTF_COMPLETE	Select this for an implementation that supports all potential conversions, with Kconfig options to control availability at build time.
CONFIG_CBPRINTF_FP_ALWAYS_A	The %a format for floats requires significantly less code than the standard decimal representations (%f, %e, %g). Selecting this option implicitly uses %a (or %A) for all decimal floating conversions. The precision of the original specification is ignored. Selecting this decreases code size when FP_SUPPORT is enabled.
CONFIG_CBPRINTF_FP_A_SUPPORT	The %a hexadecimal format for floating point value conversion was added in C99, but the output is not easily understood so it rarely appears in application code. Selecting this adds support for the conversion, but increases the overall code size related to FP support.
CONFIG_CBPRINTF_FP_SUPPORT	Build the cbprintf utility function with support for floating point format specifiers. Selecting this increases stack size requirements slightly, but increases code size significantly.
CONFIG_CBPRINTF_FULL_INTEGRAL	Build cbprintf with buffers sized to support converting the full range of all integral and pointer values. Selecting this has no effect on code size, but will increase call stack size by a few words.
CONFIG_CBPRINTF_LIBC_SUBSTS	If selected wrappers are generated for various C library functions using the cbprintf formatter underneath. The wrappers use the C library function name with a cb suffix; e.g. printfcb() or vsnprintfcb(). When used with CBPRINTF_NANO this increases the implementation code size by a small amount.
CONFIG_CBPRINTF_NANO	If selected a completely different implementation of the core formatting capability is substituted. This has a much smaller code footprint, but provides fewer capabilities.
CONFIG_CBPRINTF_N_SPECIFIER	If selected %n can be used to determine the number of characters emitted. If enabled there is a small increase in code size.
CONFIG_CBPRINTF_REDUCED_INTEGRAL	Build cbprintf with buffers sized to support converting integer values with no more than 32 bits. This will decrease stack space, but affects conversion of any type with more than 32 bits. This includes not only intmax_t but any type that can be converted to an integral represention including size_t and pointers. With CBPRINTF_COMPLETE conversions that may result in value-specific truncation are not supported, and the generated text will be the specification (e.g. %jd). With CBPRINTF_NANO all conversions will be attempted but values that cannot fit will be silently truncated.
CONFIG_CMSIS_MUTEX_MAX_COUNT	Mention maximum number of mutexes in CMSIS compliant application.
CONFIG_CMSIS_RTOS_V1	This enables CMSIS RTOS v1 API support. This is an OS-integration layer which allows applications using CMSIS RTOS APIs to build on Zephyr.
CONFIG_CMSIS_RTOS_V2	This enables CMSIS RTOS v2 API support. This is an OS-integration layer which allows applications using CMSIS RTOS V2 APIs to build on Zephyr.
CONFIG_CMSIS_SEMAPHORE_MAX_COUNT	Mention maximum number of semaphores in CMSIS compliant application.
CONFIG_CMSIS_THREAD_MAX_STACK_SIZE	Mention max stack size threads can be allocated in CMSIS RTOS application.
CONFIG_CMSIS_TIMER_MAX_COUNT	Mention maximum number of timers in CMSIS compliant application.
CONFIG_CMSIS_V2_EVT_FLAGS_MAX_COUNT	Mention maximum number of event flags in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_MEM_SLAB_MAX_COUNT	Mention maximum number of memory slabs in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_MEM_SLAB_MAX_DYNAMIC_SIZE	Mention maximum dynamic size of memory slabs/pools in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_MSGQ_MAX_COUNT	Mention maximum number of message queues in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_MSGQ_MAX_DYNAMIC_SIZE	Mention maximum dynamic size of message queues in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_MUTEX_MAX_COUNT	Mention max number of mutexes in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_SEMAPHORE_MAX_COUNT	Mention max number of semaphores in CMSIS RTOS V2 compliant application.
CONFIG_CMSIS_V2_THREAD_DYNAMIC_MAX_COUNT	Mention max number of dynamic threads in CMSIS RTOS V2 compliant application. There’s a limitation on the number of threads due to memory related constraints. Dynamic threads are a subset of all other CMSIS threads i.e. they also count towards that maximum too.
CONFIG_CMSIS_V2_THREAD_DYNAMIC_STACK_SIZE	Mention dynamic stack size threads are allocated in CMSIS RTOS V2 application.
CONFIG_CMSIS_V2_THREAD_MAX_COUNT	Mention max number of threads in CMSIS RTOS V2 compliant application. There’s a limitation on the number of threads due to memory related constraints.
CONFIG_CMSIS_V2_THREAD_MAX_STACK_SIZE	Mention max stack size threads can be allocated in CMSIS RTOS V2 application.
CONFIG_CMSIS_V2_TIMER_MAX_COUNT	Mention maximum number of timers in CMSIS RTOS V2 compliant application.
CONFIG_EVENTFD	Enable support for event file descriptors, eventfd. An eventfd can be used as an event wait/notify mechanism together with POSIX calls like read, write and poll.
CONFIG_EVENTFD_MAX	The maximum number of supported event file descriptors.
CONFIG_EXTERNAL_LIBC	Build with external/user provided C library.
CONFIG_FNMATCH	This option enables the fnmatch library
CONFIG_HAS_NEWLIB_LIBC_NANO
CONFIG_JSON_LIBRARY	Build a minimal JSON parsing/encoding library. Used by sample applications such as the NATS client.
CONFIG_LVGL	This option enables the LittlevGL GUI library.
CONFIG_LVGL_ANTIALIAS	Enable anti-aliasing
CONFIG_LVGL_BIDI_DIR_AUTO	Automatically detect direction
CONFIG_LVGL_BIDI_DIR_LTR	Left-to-right
CONFIG_LVGL_BIDI_DIR_RTL	Right-to-left
CONFIG_LVGL_BITS_PER_PIXEL	Number of bits per pixel.
CONFIG_LVGL_BUFFER_ALLOC_DYNAMIC	Rendering buffers are dynamically allocated based on the actual display parameters
CONFIG_LVGL_BUFFER_ALLOC_STATIC	Rendering buffers are statically allocated based on the following configuration parameters: * Horizontal screen resolution * Vertical screen resolution * Rendering buffer size * Bytes per pixel
CONFIG_LVGL_CALENDAR_WEEK_STARTS_MONDAY	Start a calendar week on Monday
CONFIG_LVGL_CHART_AXIS_TICK_LABEL_MAX_LEN	Maximum length of axis label
CONFIG_LVGL_COLOR_16_SWAP	Swap the 2 bytes of a RGB565 pixel.
CONFIG_LVGL_COLOR_DEPTH_1	1-bit
CONFIG_LVGL_COLOR_DEPTH_16	16-bit
CONFIG_LVGL_COLOR_DEPTH_32	32-bit
CONFIG_LVGL_COLOR_DEPTH_8	8-bit
CONFIG_LVGL_COLOR_SCREEN_TRANSP	Enable screen transparency. Useful for OSD or other overlapping GUISs.
CONFIG_LVGL_COLOR_TRANSP_BLUE	Blue
CONFIG_LVGL_COLOR_TRANSP_CUSTOM	Custom
CONFIG_LVGL_COLOR_TRANSP_GREEN	Green
CONFIG_LVGL_COLOR_TRANSP_RED	Red
CONFIG_LVGL_CUSTOM_COLOR_TRANSP_BLUE	Value of the color blue to be used in the chroma key
CONFIG_LVGL_CUSTOM_COLOR_TRANSP_GREEN	Value of the color green to be used in the chroma key
CONFIG_LVGL_CUSTOM_COLOR_TRANSP_RED	Value of the color red to be used in the chroma key
CONFIG_LVGL_DISPLAY_DEV_NAME	Name of the display device to use for rendering.
CONFIG_LVGL_DISP_DEF_REFR_PERIOD	Screen refresh period in milliseconds
CONFIG_LVGL_DISP_LARGE_LIMIT	According to the width of the display (hor. res. / dpi) the displays fall in 4 categories. This limit is the threshold for large displays.
CONFIG_LVGL_DISP_MEDIUM_LIMIT	According to the width of the display (hor. res. / dpi) the displays fall in 4 categories. This limit is the threshold for medium displays.
CONFIG_LVGL_DISP_SMALL_LIMIT	According to the width of the display (hor. res. / dpi) the displays fall in 4 categories. This limit is the threshold for small displays.
CONFIG_LVGL_DOUBLE_VDB	Use two buffers to render and flush data in parallel
CONFIG_LVGL_DPI	Dots per inch (DPI)
CONFIG_LVGL_DROPDOWN_DEF_ANIM_TIME	Drop down list animation time in milliseconds
CONFIG_LVGL_EXT_CLICK_AREA_FULL	Full flexibility
CONFIG_LVGL_EXT_CLICK_AREA_OFF	Disabled
CONFIG_LVGL_EXT_CLICK_AREA_TINY	Only horizontally and vertical
CONFIG_LVGL_FONT_DEJAVU_16_PERSIAN_HEBREW	Enable Dejavu font support, size 16 pixels, Hebrew, Arabic, Perisan letters and all their forms
CONFIG_LVGL_FONT_MONTSERRAT_10	Enable Montserrat font support, size 10 pixels
CONFIG_LVGL_FONT_MONTSERRAT_12	Enable Montserrat font support, size 12 pixels
CONFIG_LVGL_FONT_MONTSERRAT_12_SUBPX	Enable Montserrat font support with sub-pixel rendering, size 12 pixels
CONFIG_LVGL_FONT_MONTSERRAT_14	Enable Montserrat font support, size 14 pixels
CONFIG_LVGL_FONT_MONTSERRAT_16	Enable Montserrat font support, size 16 pixels
CONFIG_LVGL_FONT_MONTSERRAT_18	Enable Montserrat font support, size 18 pixels
CONFIG_LVGL_FONT_MONTSERRAT_20	Enable Montserrat font support, size 20 pixels
CONFIG_LVGL_FONT_MONTSERRAT_22	Enable Montserrat font support, size 22 pixels
CONFIG_LVGL_FONT_MONTSERRAT_24	Enable Montserrat font support, size 24 pixels
CONFIG_LVGL_FONT_MONTSERRAT_26	Enable Montserrat font support, size 26 pixels
CONFIG_LVGL_FONT_MONTSERRAT_28	Enable Montserrat font support, size 28 pixels
CONFIG_LVGL_FONT_MONTSERRAT_28_COMPRESSED	Enable Montserrat compressed font support, size 28 pixels
CONFIG_LVGL_FONT_MONTSERRAT_30	Enable Montserrat font support, size 30 pixels
CONFIG_LVGL_FONT_MONTSERRAT_32	Enable Montserrat font support, size 32 pixels
CONFIG_LVGL_FONT_MONTSERRAT_34	Enable Montserrat font support, size 34 pixels
CONFIG_LVGL_FONT_MONTSERRAT_36	Enable Montserrat font support, size 36 pixels
CONFIG_LVGL_FONT_MONTSERRAT_38	Enable Montserrat font support, size 38 pixels
CONFIG_LVGL_FONT_MONTSERRAT_40	Enable Montserrat font support, size 40 pixels
CONFIG_LVGL_FONT_MONTSERRAT_42	Enable Montserrat font support, size 42 pixels
CONFIG_LVGL_FONT_MONTSERRAT_44	Enable Montserrat font support, size 44 pixels
CONFIG_LVGL_FONT_MONTSERRAT_46	Enable Montserrat font support, size 46 pixels
CONFIG_LVGL_FONT_MONTSERRAT_48	Enable Montserrat font support, size 48 pixels
CONFIG_LVGL_FONT_MONTSERRAT_8	Enable Montserrat font support, size 8 pixels
CONFIG_LVGL_FONT_SIMSUN_16_CJK	Enable Simsun font support, size 16 pixels, 1000 most common CJK radicals
CONFIG_LVGL_FONT_SUBPX_BGR	User BGR pixel format instead of RGB for sub-pixel rendering
CONFIG_LVGL_FONT_UNSCII_8	Enable Unscii monospace font support, size 8 pixels
CONFIG_LVGL_HOR_RES_MAX	Horizontal screen resolution in pixels
CONFIG_LVGL_IMGBTN_TILED	Enable tile support for image button
CONFIG_LVGL_IMG_CACHE_DEF_SIZE	Default image cache size, image caching keeps the images open. If only the built-in image formats are used there is no real advantage of caching. With complex image decoders (e.g. PNG or JPG) caching can save the continuous decoding of images. However the opened images might consume additional RAM.
CONFIG_LVGL_IMG_CF_ALPHA	Enable support for alpha indexed images
CONFIG_LVGL_IMG_CF_INDEXED	Enable support for indexed images
CONFIG_LVGL_INDEV_DEF_DRAG_LIMIT	Threshold in pixels before entering drag mode
CONFIG_LVGL_INDEV_DEF_DRAG_THROW	Percentage of slow down of a throw following a drag. Greater percentage means faster slow-down.
CONFIG_LVGL_INDEV_DEF_GESTURE_LIMIT	Gesture threshold in pixels
CONFIG_LVGL_INDEV_DEF_GESTURE_MIN_VELOCITY	Gesture min velocity at release before swipe (pixels)
CONFIG_LVGL_INDEV_DEF_LONG_PRESS_REP_TIME	Period in milliseconds after which a new trigger is generated for a long press
CONFIG_LVGL_INDEV_DEF_LONG_PRESS_TIME	Period in milliseconds before a press is seen as a long press
CONFIG_LVGL_INDEV_DEF_READ_PERIOD	Refresh period for input devices in milliseconds
CONFIG_LVGL_LABEL_DEF_SCROLL_SPEED	Scroll speed in pixels per second if scroll mode is enabled for a label
CONFIG_LVGL_LABEL_LONG_TXT_HINT	Enable support for long text hints
CONFIG_LVGL_LABEL_TEXT_SEL	Enable label text selection
CONFIG_LVGL_LABEL_WAIT_CHAR_COUNT	Waiting period at beginning/end of the label animation cycle
CONFIG_LVGL_LED_BRIGHT_MAX	LED maximum brightness
CONFIG_LVGL_LED_BRIGHT_MIN	LED minimum brightness
CONFIG_LVGL_LINEMETER_PRECISE_BEST	Best precision
CONFIG_LVGL_LINEMETER_PRECISE_NO_EXTRA	No extra precision
CONFIG_LVGL_LINEMETER_PRECISE_SOME_EXTRA	Some extra precision
CONFIG_LVGL_LIST_DEF_ANIM_TIME	List focus default animation time in milliseconds
CONFIG_LVGL_MEM_POOL_HEAP_KERNEL	Use k_malloc and k_free to allocate objects on the kernel heap
CONFIG_LVGL_MEM_POOL_HEAP_LIB_C	Use C library malloc and free to allocate objects on the C library heap
CONFIG_LVGL_MEM_POOL_KERNEL	Use a dedicated memory pool in kernel space to allocate lvgl objects on
CONFIG_LVGL_MEM_POOL_MAX_SIZE	Size of the largest block in the memory pool in bytes
CONFIG_LVGL_MEM_POOL_MIN_SIZE	Size of the smallest block in the memory pool in bytes
CONFIG_LVGL_MEM_POOL_NUMBER_BLOCKS	Number of maximum sized blocks in the memory pool.
CONFIG_LVGL_MEM_POOL_USER	Use a dedicated memory pool in user space to allocate lvgl objects on
CONFIG_LVGL_PAGE_DEF_ANIM_TIME	Default page focus animation time in milliseconds
CONFIG_LVGL_POINTER_KSCAN	Enable keyboard scan pointer input
CONFIG_LVGL_POINTER_KSCAN_DEV_NAME	Name of the keyboard scan device to use for pointer input.
CONFIG_LVGL_POINTER_KSCAN_INVERT_X	Invert keyboard scan X axis. This option can be used to align keyboard scan coordinates with the display.
CONFIG_LVGL_POINTER_KSCAN_INVERT_Y	Invert keyboard scan Y axis. This option can be used to align keyboard scan coordinates with the display.
CONFIG_LVGL_POINTER_KSCAN_MSGQ_COUNT	Maximum number of items in the keyboard scan message queue.
CONFIG_LVGL_POINTER_KSCAN_SWAP_XY	Swap keyboard scan X,Y axes. This option can be used to align keyboard scan coordinates with the display.
CONFIG_LVGL_ROLLER_DEF_ANIM_TIME	Roller animation time in milliseconds
CONFIG_LVGL_ROLLER_INF_PAGES	Number of extra pages in case the roller is infinite
CONFIG_LVGL_SHADOW_CACHE_SIZE	Allow buffering some shadow calculation. This parameter is the maximum shadow size to buffer.
CONFIG_LVGL_SPINNER_DEF_ANIM_CONSTANT_ARC	Constant arc
CONFIG_LVGL_SPINNER_DEF_ANIM_FILLSPIN_ARC	Fill spin arc
CONFIG_LVGL_SPINNER_DEF_ANIM_SPINNING_ARC	Spinning arc
CONFIG_LVGL_SPINNER_DEF_ARC_LENGTH	Default arc length for spinner in degrees
CONFIG_LVGL_SPINNER_DEF_SPIN_TIME	Default spin time for spinner in ms
CONFIG_LVGL_TABLE_COL_MAX	Maximum number of columns to support in a table
CONFIG_LVGL_TABVIEW_DEF_ANIM_TIME	Tab view animation time in milliseconds
CONFIG_LVGL_TA_DEF_CURSOR_BLINK_TIME	Text area cursor blink time in milliseconds
CONFIG_LVGL_TA_DEF_PWD_SHOW_TIME	Password character show time in milliseconds
CONFIG_LVGL_THEME_CUSTOM_INIT_FUNCTION	Custom theme initialization function
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_AQUA	Aqua
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_BLACK	Black
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_BLUE	Blue
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_CUSTOM	Custom
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_CUSTOM_BLUE	Custom primary color RGB blue channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_CUSTOM_GREEN	Custom primary color RGB green channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_CUSTOM_RED	Custom primary color RGB red channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_CYAN	Cyan
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_GRAY	Gray
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_GREEN	Green
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_LIME	Lime
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_MAGENTA	Magenta
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_MAROON	Maroon
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_NAVY	Navy
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_OLIVE	Olive
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_ORANGE	Orange
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_PURPLE	Purple
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_RED	Red
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_SILVER	Silver
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_TEAL	Teal
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_WHITE	White
CONFIG_LVGL_THEME_DEFAULT_COLOR_PRIMARY_YELLOW	Yellow
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_AQUA	Aqua
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_BLACK	Black
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_BLUE	Blue
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_CUSTOM	Custom
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_CUSTOM_BLUE	Custom secondary color RGB blue channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_CUSTOM_GREEN	Custom secondary color RGB green channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_CUSTOM_RED	Custom secondary color RGB red channel
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_CYAN	Cyan
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_GRAY	Gray
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_GREEN	Green
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_LIME	Lime
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_MAGENTA	Magenta
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_MAROON	Maroon
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_NAVY	Navy
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_OLIVE	Olive
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_ORANGE	Orange
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_PURPLE	Purple
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_RED	Red
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_SILVER	Silver
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_TEAL	Teal
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_WHITE	White
CONFIG_LVGL_THEME_DEFAULT_COLOR_SECONDARY_YELLOW	Yellow
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_CUSTOM	Use a none build-in font as default normal font. A pointer named lv_theme_default_normal_font_custom_ptr should exists as a global variable and point to a valid font structure
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_DEJAVU_16_PERSIAN_HEBREW	Build-in font size 16 with Hebrew, Arabic and Persian
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_10	Build-in font size 10
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_12	Build-in font size 12
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_12_SUBPX	Build-in font size 12 with sub-pixel rendering
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_14	Build-in font size 14
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_16	Build-in font size 16
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_18	Build-in font size 18
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_20	Build-in font size 20
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_22	Build-in font size 22
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_24	Build-in font size 24
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_26	Build-in font size 26
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_28	Build-in font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_28_COMPRESSED	Build-in compressed font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_30	Build-in font size 30
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_32	Build-in font size 32
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_34	Build-in font size 34
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_36	Build-in font size 36
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_38	Build-in font size 38
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_40	Build-in font size 40
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_42	Build-in font size 42
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_44	Build-in font size 44
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_46	Build-in font size 46
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_48	Build-in font size 48
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_MONTSERRAT_8	Build-in font size 8
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_SIMSUN_16_CJK	Build-in font size 16 with CJK radicals
CONFIG_LVGL_THEME_DEFAULT_FONT_NORMAL_UNSCII_8	Build-in monospace font
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_CUSTOM	Use a none build-in font as default small font. A pointer named lv_theme_default_small_font_custom_ptr should exists as a global variable and point to a valid font structure
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_DEJAVU_16_PERSIAN_HEBREW	Build-in font size 16 with Hebrew, Arabic and Persian
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_10	Build-in font size 10
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_12	Build-in font size 12
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_12_SUBPX	Build-in font size 12 with sub-pixel rendering
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_14	Build-in font size 14
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_16	Build-in font size 16
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_18	Build-in font size 18
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_20	Build-in font size 20
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_22	Build-in font size 22
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_24	Build-in font size 24
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_26	Build-in font size 26
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_28	Build-in font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_28_COMPRESSED	Build-in compressed font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_30	Build-in font size 30
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_32	Build-in font size 32
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_34	Build-in font size 34
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_36	Build-in font size 36
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_38	Build-in font size 38
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_40	Build-in font size 40
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_42	Build-in font size 42
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_44	Build-in font size 44
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_46	Build-in font size 46
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_48	Build-in font size 48
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_MONTSERRAT_8	Build-in font size 8
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_SIMSUN_16_CJK	Build-in font size 16 with CJK radicals
CONFIG_LVGL_THEME_DEFAULT_FONT_SMALL_UNSCII_8	Build-in monospace font
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_CUSTOM	Use a none build-in font as default subtitle font. A pointer named lv_theme_default_small_font_subtitle_ptr should exists as a global variable and point to a valid font structure
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_DEJAVU_16_PERSIAN_HEBREW	Build-in font size 16 with Hebrew, Arabic and Persian
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_10	Build-in font size 10
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_12	Build-in font size 12
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_12_SUBPX	Build-in font size 12 with sub-pixel rendering
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_14	Build-in font size 14
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_16	Build-in font size 16
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_18	Build-in font size 18
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_20	Build-in font size 20
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_22	Build-in font size 22
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_24	Build-in font size 24
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_26	Build-in font size 26
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_28	Build-in font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_28_COMPRESSED	Build-in compressed font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_30	Build-in font size 30
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_32	Build-in font size 32
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_34	Build-in font size 34
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_36	Build-in font size 36
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_38	Build-in font size 38
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_40	Build-in font size 40
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_42	Build-in font size 42
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_44	Build-in font size 44
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_46	Build-in font size 46
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_48	Build-in font size 48
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_MONTSERRAT_8	Build-in font size 8
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_SIMSUN_16_CJK	Build-in font size 16 with CJK radicals
CONFIG_LVGL_THEME_DEFAULT_FONT_SUBTITLE_UNSCII_8	Build-in monospace font
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_CUSTOM	Use a none build-in font as default title font. A pointer named lv_theme_default_small_font_title_ptr should exists as a global variable and point to a valid font structure
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_DEJAVU_16_PERSIAN_HEBREW	Build-in font size 16 with Hebrew, Arabic and Persian
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_10	Build-in font size 10
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_12	Build-in font size 12
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_12_SUBPX	Build-in font size 12 with sub-pixel rendering
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_14	Build-in font size 14
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_16	Build-in font size 16
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_18	Build-in font size 18
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_20	Build-in font size 20
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_22	Build-in font size 22
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_24	Build-in font size 24
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_26	Build-in font size 26
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_28	Build-in font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_28_COMPRESSED	Build-in compressed font size 28
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_30	Build-in font size 30
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_32	Build-in font size 32
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_34	Build-in font size 34
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_36	Build-in font size 36
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_38	Build-in font size 38
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_40	Build-in font size 40
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_42	Build-in font size 42
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_44	Build-in font size 44
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_46	Build-in font size 46
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_48	Build-in font size 48
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_MONTSERRAT_8	Build-in font size 8
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_SIMSUN_16_CJK	Build-in font size 16 with CJK radicals
CONFIG_LVGL_THEME_DEFAULT_FONT_TITLE_UNSCII_8	Build-in monospace font
CONFIG_LVGL_THEME_MATERIAL_DARK	Dark
CONFIG_LVGL_THEME_MATERIAL_FLAG_NO_FOCUS	Disable indication of focused state in material theme
CONFIG_LVGL_THEME_MATERIAL_FLAG_NO_TRANSITION	Disable transitions in material theme
CONFIG_LVGL_THEME_MATERIAL_LIGHT	Light
CONFIG_LVGL_TILEVIEW_DEF_ANIM_TIME	Tile view animation time in milliseconds
CONFIG_LVGL_TXT_BREAK_CHARS	Characters on which a text break can take place
CONFIG_LVGL_TXT_COLOR_CMD	Control character to use for signalling text recoloring
CONFIG_LVGL_TXT_ENC_ASCII	ASCII string encoding
CONFIG_LVGL_TXT_ENC_UTF8	UTF-8 string encoding
CONFIG_LVGL_TXT_LINE_BREAK_LONG_LEN	If a word is at least this long, a line break is allowed in the word. If the length is 0, no line break is allowed in the middle of a word.
CONFIG_LVGL_TXT_LINE_BREAK_LONG_POST_MIN_LEN	Minimal number of characters to place on a line after a line break occurred in the middle of a word.
CONFIG_LVGL_TXT_LINE_BREAK_LONG_PRE_MIN_LEN	Minimal number of characters to place on a line before a line break in the middle of a word can occur.
CONFIG_LVGL_USE_ANIMATION	Enable animations
CONFIG_LVGL_USE_API_EXTENSION_V6	Use the functions and types from the older API if possible
CONFIG_LVGL_USE_API_EXTENSION_V7	Use the functions and types from the older API if possible
CONFIG_LVGL_USE_ARABIC_PERSIAN_CHARS	Enable Arabic/Persian processing In these languages characters should be replaced with an other form based on their position in the text
CONFIG_LVGL_USE_ARC	Enable arc object support
CONFIG_LVGL_USE_ASSERT_MEM	Enable memory allocation assertion Check if memory allocation is successful (Quite fast)
CONFIG_LVGL_USE_ASSERT_MEM_INTEGRITY	Check the integrity of lv_mem after critical operations. (Slow)
CONFIG_LVGL_USE_ASSERT_NULL	Enable null pointer assertion Check if a null pointer is passed as a parameter (Quite fast)
CONFIG_LVGL_USE_ASSERT_OBJ	Enable object assertion Check if an object is not a NULL pointer, has the correct type and does exists. (Quite Slow) If this option is disabled and NULL pointer checking is enabled, the NULL pointer check is executed instead.
CONFIG_LVGL_USE_ASSERT_STR	Enable string assertion Check if the string is not a NULL pointer, unusually long string, contains invalid characters or contains unusual repetitions. (Slow) If this option is disabled and NULL pointer checking is enabled, the NULL pointer check is executed instead.
CONFIG_LVGL_USE_ASSERT_STYLE	Enable style assertion Check if a used style is correctly initialized. (Fast)
CONFIG_LVGL_USE_BAR	Enable bar object support
CONFIG_LVGL_USE_BIDI	Enable bidirectional text support The direction of the text will be processed according to the Unicode Bidirectional Algorithm: https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
CONFIG_LVGL_USE_BLEND_MODES	Use other blend modes than normal
CONFIG_LVGL_USE_BTN	Enable button object support
CONFIG_LVGL_USE_BTNMATRIX	Enable button matrix object support
CONFIG_LVGL_USE_CALENDAR	Enable calendar object support
CONFIG_LVGL_USE_CANVAS	Enabled canvas object support
CONFIG_LVGL_USE_CHART	Enable chart object support
CONFIG_LVGL_USE_CHECKBOX	Enable check box object support
CONFIG_LVGL_USE_CONT	Enable container object support
CONFIG_LVGL_USE_CPICKER	Enable color picker object support
CONFIG_LVGL_USE_DEBUG	Enable debug support. If debug support is enabled LVGL will validate the parameters of any function call made and if an invalid parameter is found __ASSERT is called.
CONFIG_LVGL_USE_DROPDOWN	Enable drop down list object support
CONFIG_LVGL_USE_FILESYSTEM	Enable LittlevGL file system
CONFIG_LVGL_USE_FONT_COMPRESSED	Enable support for compressed fonts. If it’s disabled, compressed glyphs cannot be processed by the library and won’t be rendered.
CONFIG_LVGL_USE_FONT_SUBPX	Enable sub-pixel rendering
CONFIG_LVGL_USE_GAUGE	Enable gauge object support
CONFIG_LVGL_USE_GPU	Enable GPU support
CONFIG_LVGL_USE_GROUP	Enable group support. Used by keyboard and button input
CONFIG_LVGL_USE_IMG	Enable image object support
CONFIG_LVGL_USE_IMGBTN	Enable image button object support
CONFIG_LVGL_USE_IMG_TRANSFORM	Use image zoom and rotation
CONFIG_LVGL_USE_KEYBOARD	Enable keyboard object support
CONFIG_LVGL_USE_LABEL	Enable label support
CONFIG_LVGL_USE_LED	Enable LED object support
CONFIG_LVGL_USE_LINE	Enable line object support
CONFIG_LVGL_USE_LINEMETER	Enable line meter object support
CONFIG_LVGL_USE_LIST	Enable list object support
CONFIG_LVGL_USE_MSGBOX	Enable message box object support
CONFIG_LVGL_USE_OBJMASK	Enable object mask support
CONFIG_LVGL_USE_OBJ_REALIGN	Enable object realign support
CONFIG_LVGL_USE_OPA_SCALE	Use the opa_scale style property to set the opacity of an object and its children at once
CONFIG_LVGL_USE_OUTLINE	Enable outline drawing on rectangles
CONFIG_LVGL_USE_PAGE	Enable page object support
CONFIG_LVGL_USE_PATTERN	Enable pattern drawing on rectangles
CONFIG_LVGL_USE_PERF_MONITOR	Show CPU usage and FPS count in the right bottom corner
CONFIG_LVGL_USE_ROLLER	Enable roller object support
CONFIG_LVGL_USE_SHADOW	Enable shadows
CONFIG_LVGL_USE_SLIDER	Enable slider object support
CONFIG_LVGL_USE_SPINBOX	Enable spinbox object support
CONFIG_LVGL_USE_SPINNER	Enable spinner object support
CONFIG_LVGL_USE_SWITCH	Enable switch object support
CONFIG_LVGL_USE_TABLE	Enable table object support
CONFIG_LVGL_USE_TABVIEW	Enable tab view object support
CONFIG_LVGL_USE_TEXTAREA	Enable text area object support
CONFIG_LVGL_USE_THEME_CUSTOM	Custom theme.
CONFIG_LVGL_USE_THEME_EMPTY	No theme, you can apply your styles as you need
CONFIG_LVGL_USE_THEME_MATERIAL	Material theme, flat theme with bold colors and light shadow, support
CONFIG_LVGL_USE_THEME_MONO	Mono theme, monochrome, support
CONFIG_LVGL_USE_TILEVIEW	Enable tile view object support
CONFIG_LVGL_USE_VALUE_STR	Enable value string drawing on rectangles
CONFIG_LVGL_USE_WIN	Enable window object support
CONFIG_LVGL_VDB_SIZE	Size of the buffer used for rendering screen content as a percentage of total display size.
CONFIG_LVGL_VER_RES_MAX	Vertical screen resolution in pixels
CONFIG_MAX_PTHREAD_COUNT	Maximum number of simultaneously active threads in a POSIX application.
CONFIG_MAX_TIMER_COUNT	Mention maximum number of timers in POSIX compliant application.
CONFIG_MINIMAL_LIBC	Build with minimal C library.
CONFIG_MINIMAL_LIBC_CALLOC	Enable the minimal libc’s trivial implementation of calloc, which forwards to malloc and memset.
CONFIG_MINIMAL_LIBC_LL_PRINTF	Build with long long printf enabled. This will increase the size of the image.
CONFIG_MINIMAL_LIBC_MALLOC	Enable the minimal libc’s implementation of malloc, free, and realloc. Disable if you wish to provide your own implementations of these functions.
CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE	Indicate the size in bytes of the memory arena used for minimal libc’s malloc() implementation.
CONFIG_MINIMAL_LIBC_REALLOCARRAY	Enable the minimal libc’s trivial implementation of reallocarray, which forwards to realloc.
CONFIG_MQUEUE_NAMELEN_MAX	Mention length of message queue name in number of characters.
CONFIG_MSG_COUNT_MAX	Mention maximum number of messages in message queue in POSIX compliant application.
CONFIG_MSG_SIZE_MAX	Mention maximum size of message in bytes.
CONFIG_NEED_LIBC_MEM_PARTITION	Hidden option to signal that a memory partition is needed for the C libraray even though it would not have been enabled otherwise.
CONFIG_NEWLIB_LIBC	Build with newlib library. The newlib library is expected to be part of the SDK in this case.
CONFIG_NEWLIB_LIBC_ALIGNED_HEAP_SIZE	If user mode is enabled, and MPU hardware has requirements that regions be sized to a power of two and aligned to their size, and user mode threads need to access this heap, then this is necessary to properly define an MPU region for the heap. If this is left at 0, then remaining system RAM will be used for this area and it may not be possible to program it as an MPU region.
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF	Build with floating point printf enabled. This will increase the size of the image.
CONFIG_NEWLIB_LIBC_FLOAT_SCANF	Build with floating point scanf enabled. This will increase the size of the image.
CONFIG_NEWLIB_LIBC_MAX_MAPPED_REGION_SIZE	On MMU-based systems, indicates the maximum amount of memory which will be used for the newlib malloc() heap. The actual amount of memory used will be the minimum of this value and the amount of free physical memory at kernel boot.
CONFIG_NEWLIB_LIBC_NANO	Build with newlib-nano library, for small embedded apps. The newlib-nano library for ARM embedded processors is a part of the GNU Tools for ARM Embedded Processors.
CONFIG_OPENAMP_RSC_TABLE	add the resource table in the generated binary. This table is compatible with linux remote proc framework and OpenAMP library.
CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF	This option specifies the number of buffer used in a Vring for interprocessor communication
CONFIG_POSIX_API	Enable mostly-standards-compliant implementations of various POSIX (IEEE 1003.1) APIs.
CONFIG_POSIX_CLOCK	This enables POSIX clock_*(), timer_*(), and *sleep() functions.
CONFIG_POSIX_FS	This enables POSIX style file system related APIs.
CONFIG_POSIX_MAX_FDS	Maximum number of open file descriptors, this includes files, sockets, special devices, etc.
CONFIG_POSIX_MAX_OPEN_FILES	Maximum number of open files. Note that this setting is additionally bounded by CONFIG_POSIX_MAX_FDS.
CONFIG_POSIX_MQUEUE	This enabled POSIX message queue related APIs.
CONFIG_PRINTK64	Replace with CBPRINTF_FULL_INTEGRAL.
CONFIG_PRINTK_SYNC	When true, a spinlock will be taken around the output from a single printk() call, preventing the output data from interleaving with concurrent usage from another CPU or an preempting interrupt.
CONFIG_PTHREAD_IPC	This enables a mostly-standards-compliant implementation of the pthread mutex, condition variable and barrier IPC mechanisms.
CONFIG_REQUIRES_FULL_LIBC	Helper symbol to indicate some feature requires a C library implementation with more functionality than what MINIMAL_LIBC provides
CONFIG_RING_BUFFER	Enable usage of ring buffers. This is similar to kernel FIFOs but ring buffers manage their own buffer memory and can store arbitrary data. For optimal performance, use buffer sizes that are a power of 2.
CONFIG_SEM_VALUE_MAX	Maximum semaphore count in POSIX compliant Application.
CONFIG_STDOUT_CONSOLE	This option directs standard output (e.g. printf) to the console device, rather than suppressing it entirely. See also EARLY_CONSOLE option.
CONFIG_SYS_HEAP_ALLOC_LOOPS	The sys_heap allocator bounds the number of tries from the smallest chunk level (the one that might not fit the requested allocation) to maintain constant time performance. Setting this to a high level will cause the heap to return more successful allocations in situations of high fragmentation, at the cost of potentially significant (linear time) searching of the free list. The default is three, which results in an allocator with good statistical properties (“most” allocations that fit will succeed) but keeps the maximum runtime at a tight bound so that the heap is useful in locked or ISR contexts.
CONFIG_SYS_HEAP_ALWAYS_BIG_MODE	The sys_heap allocator by default returns pointers to blocks which are guaranteed to be aligned to the pointer size. By enabling the “big chunks” mode, the returned blocks are guaranteed to be 8 byte aligned, also on 32-bit platforms. If this option is enabled, the “big chunks” mode will always be used by sys_heap.
CONFIG_SYS_HEAP_VALIDATE	The sys_heap implementation is instrumented for extensive internal validation. Leave this off by default, unless modifying the heap code or (maybe) when running in environments that require sensitive detection of memory corruption.