This is wrong but should not crash ] ) } !

# comment

config BR2_PACKAGE_GAMMARAY
bool "gammaray"
depends on BR2_PACKAGE_QT5
help
GammaRay Qt introspection probe.
second line of help, with correct indentation

GammaRay Qt introspection probe.
second line of help, with correct indentation
third line underindented and thus wrong
default 'true'
config W1_MASTER_GPIO_CUSTOM
tristate "Custom GPIO-based W1 driver"
depends on GENERIC_GPIO
select W1_GPIOconfig AG71XX
tristate "Atheros AR7XXX/AR9XXX built-in ethernet mac support"
depends on ATH79
imply HAS_TXX9_SERIAL
def_bool LD_VERSION >= 225000000 || LD_IS_LLD
select PHYLIB
---help---
If you wish to compile a kernel for AR7XXX/91XXX and enable
ethernet support, then you should always answer Y to this.

comment "module support disabled"
depends on !MODULES

menu myMenu
depends on NET
config NETDEVICES
bool "Atheros AR71xx built-in ethernet driver debugging"
def_bool ds
default n
help
Atheros AR71xx built-in ethernet driver debugging messages.
endmenu
if TARGET_OX820

config SYS_CPU
default "arm1136"

endif

if AG71XX
config AG71XX_DEBUG
bool "Atheros AR71xx built-in ethernet driver debugging"
default n
help
Atheros AR71xx built-in ethernet driver debugging messages.
endif

# comment

menu "System setup"

choice
prompt "Alpha system type"
default ALPHA_GENERIC
string "bad"
---help---
This is the system type of your hardware.

config HZ_32
bool "32 Hz"
config HZ_64
bool "64 Hz"

config ALPHA_GENERIC
bool "Generic"
depends on TTY
select HAVE_EISA
select GENERIC_BUG_RELATIVE_POINTERS if X86_64
bool "64-bit kernel" if "$(SUBARCH)" = "x86"
bool "Support the legacy \"mmu-masters\" devicetree bindings"
depends on ARM_SMMU=y && OF
help
A generic kernel will run on all supported Alpha hardware.

endchoice

config VGA_HOSE
bool
def_bool y
depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
default y
default n
default 3
bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
default y if ALPHA_QEMU
default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
default n if !ALPHA_SRM && !ALPHA_GENERIC
default y if SMP
default "y" if PPC_POWERNV
range 2 32
depends on SMP
default "32" if ALPHA_GENERIC || ALPHA_MARVEL
default '4' if !ALPHA_GENERIC && !ALPHA_MARVEL
help
Support VGA on an arbitrary hose; needed for several platforms
which always have multiple hoses, and whose consoles support it.

endmenu

menu "ARC Architecture Configuration"

menu "ARC Platform/SoC/Board"

#New platform adds here
source "arch/arc/plat-eznps/Kconfig"
source 'arch/arc/plat-hsdk/Kconfig'

endmenu

menu "ARC CPU Configuration"

choice
prompt "ARC Core"
default ARC_CPU_HS if ISA_ARCV2
help
bla bla

if ISA_ARCOMPACT

config ARC_CPU_750D
bool "ARC750D"
select ARC_CANT_LLSC
help
Support for ARC750 core

endif #ISA_ARCOMPACT

endchoice

if SMP

config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
default "4"

endif #SMP

config ARC_MMU_V4
bool "MMU v4"
depends on ISA_ARCV2

endmenu # "ARC CPU Configuration"

menuconfig ARC_PLAT_EZNPS
bool "\"EZchip\" ARC dev platform"
depends on ISA_ARCOMPACT
select CPU_BIG_ENDIAN
select CLKSRC_NPS if !PHYS_ADDR_T_64BIT
help
Support for EZchip development platforms,
based on ARC700 cores.
We handle few flavors:
- Hardware Emulator AKA HE which is FPGA based chassis
- Simulator based on MetaWare nSIM
- NPS400 chip based on ASIC

# SPDX-License-Identifier: GPL-2.0-only
config ARM64
def_bool y
select HAVE_DYNAMIC_FTRACE_WITH_REGS \
if $(cc-option,-fpatchable-function-entry=2)
select HAVE_EFFICIENT_UNALIGNED_ACCESS
help
ARM 64-bit (AArch64) Linux support.

config PHYS_OFFSET
hex "Physical address of main memory" if MMU
depends on !ARM_PATCH_PHYS_VIRT
default DRAM_BASE if !MMU
default 0x00000000 if ARCH_EBSA110 || \
ARCH_FOOTBRIDGE || \
ARCH_INTEGRATOR || \
ARCH_REALVIEW
default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
default 0x20000000 if ARCH_S5PV210
default 0xc0000000 if ARCH_SA1100
help
Please provide the physical address corresponding to the
location of main memory in your system.

comment "S3C2416 Boards"

config KERNEL_RAM_BASE_ADDRESS
hex "Virtual address of memory base"
default 0xe0000000 if SOC_TMS320C6455
default 0xe0000000 if SOC_TMS320C6457

config CC_IS_GCC
def_bool $(success,echo "$(CC_VERSION_TEXT)" | grep -q gcc)

endif # error

# next line caused hang, see https://phabricator.kde.org/D18509
menu

# the next lines should all be fine
plain:=plain_value
with_whitespace := plain value whitespace
value_with_expansion := $(ARCH)
plain_expansion_mix := Linux/$(ARCH) $(KERNELVERSION) Kernel Configuration

# function definition
cc-option-bit = $(if-success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null,$(1))

# function call
$(cc-option-bit,-m64)

# function call and storing the result
m32-flag := $(cc-option-bit,-m32)

# call to known function
name := $(filename)

# call to known function with arguments
$(warning-if,y,hello world 1)

# ... with nested expansions
$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)

# expansion in different contexts
config FOO_$(BAR$(BAZ))
int "$(filename)"
default $(lineno) if $(lineno) >= 5

menu "A MENU"
visible if 01 > 00

config A_BOOL
def_bool y && m || !!(!(!!n)) || "$(foo)"

endmenu

# Advanced real world example taken from init/Kconfig in Linux 5.10:
# Invoke the system shell /bin/sh with a command to pipe a C program with an
# asm goto statement to the C compiler that is set by the environment. If the
# exit code is 0 then set the default value of CC_HAS_ASM_GOTO_OUTPUT to y,
# otherwise to n.
config CC_HAS_ASM_GOTO_OUTPUT
depends on CC_HAS_ASM_GOTO
def_bool $(success,echo 'int foo(int x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null)

# Real world example with irregular indentation
config W1_MASTER_DS2490
tristate "DS2490 USB <-> W1 transport layer for 1-wire"
depends on USB
help
Say Y here if you want to have a driver for DS2490 based USB <-> W1 bridges,
for example DS9490*.

This support is also available as a module. If so, the module
will be called ds2490.

# synthetic example
to_upper=$(shell,echo $(1) | tr [:lower:] [:upper:])

config ARGS_$(to_upper,$(CC))
string "Arguments for the current compiler \"$(CC)\""
help
This is a bad idea.
See <file:Documentation/completely/made-up.rst>

# binary operator in expression of an if statement
if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
source "drivers/cpufreq/Kconfig"
endif

# alert on characters (here a colon) that are ignored (taken from axTLS 2.1.5)
config CONFIG_LUA_CORE
string "Location of Lua CORE"
default "/usr/local"
help:
If the Lua exists on another directory then this needs to be changed

comment "Comment texts know expansions, too: $(CC), and the depends property:"
depends on A_BOOL

# "boolean" is now a free variable name ...
boolean=foo
# ... but it looks like a bad idea. This may be disputed.

menuconfig MODULES
bool "Enable loadable module support"
modules

# the three modern options
config OPTIONS
option allnoconfig_y
option modules
option defconfig_list

# old option "env" and obsolete custom options
config OPTIONS
option env=ARCH
option custom-without-argument
option custom-with-argument=ABC

# old syntax
menu OLD_STYLE_PROMPT
visible if CPU_SUPPORTS_CPUFREQ

# busybox 1.31.1
source libbb/Config.in

# uClibc-ng-1.0.37
config DESIRED_TARGET_ARCH
string
option env="ARCH"

config OLD_HELP
hex
---help---
old help property
default 0x1CEC0FEE
endmenu

# a few errors
allnoconfig_y
bool
def_bool
def_tristate
default
defconfig_list
depends
endchoice
endif
help
hex
imply
int
mainmenu
modules
on
option
optional
prompt
range
select
string
tristate
visible

config OK
bool "still OK"
help
still OK
now=fail
andNow=OK