Merge tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - fix build rules in binderfs sample

 - fix build errors when Kbuild recurses to the top Makefile

 - covert '---help---' in Kconfig to 'help'

* tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  treewide: replace '---help---' in Kconfig files with 'help'
  kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
  samples: binderfs: really compile this sample and fix build issues

Makefile

@@ -458,27 +458,13 @@ PYTHON		= python
 PYTHON3		= python3
 CHECK		= sparse
 BASH		= bash
-GZIP		= gzip
-BZIP2		= bzip2
-LZOP		= lzop
+KGZIP		= gzip
+KBZIP2		= bzip2
+KLZOP		= lzop
 LZMA		= lzma
 LZ4		= lz4c
 XZ		= xz
 
-# GZIP, BZIP2, LZOP env vars are used by the tools. Support them as the command
-# line interface, but use _GZIP, _BZIP2, _LZOP internally.
-_GZIP          := $(GZIP)
-_BZIP2         := $(BZIP2)
-_LZOP          := $(LZOP)
-
-# Reset GZIP, BZIP2, LZOP in this Makefile
-override GZIP=
-override BZIP2=
-override LZOP=
-
-# Reset GZIP, BZIP2, LZOP in recursive invocations
-MAKEOVERRIDES += GZIP= BZIP2= LZOP=
-
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 		  -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
 NOSTDINC_FLAGS :=
@@ -526,7 +512,7 @@ CLANG_FLAGS :=
 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
 export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL
 export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
-export _GZIP _BZIP2 _LZOP LZMA LZ4 XZ
+export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ
 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
 
 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
@@ -1048,7 +1034,7 @@ export mod_strip_cmd
 mod_compress_cmd = true
 ifdef CONFIG_MODULE_COMPRESS
   ifdef CONFIG_MODULE_COMPRESS_GZIP
-    mod_compress_cmd = $(_GZIP) -n -f
+    mod_compress_cmd = $(KGZIP) -n -f
   endif # CONFIG_MODULE_COMPRESS_GZIP
   ifdef CONFIG_MODULE_COMPRESS_XZ
     mod_compress_cmd = $(XZ) -f

arch/Kconfig

@@ -876,7 +876,7 @@ config VMAP_STACK
 	bool "Use a virtually-mapped stack"
 	depends on HAVE_ARCH_VMAP_STACK
 	depends on !KASAN || KASAN_VMALLOC
-	---help---
+	help
 	  Enable this if you want the use virtually-mapped kernel stacks
 	  with guard pages.  This causes kernel stack overflows to be
 	  caught immediately rather than causing difficult-to-diagnose
@@ -948,7 +948,7 @@ config ARCH_USE_MEMREMAP_PROT
 config LOCK_EVENT_COUNTS
 	bool "Locking event counts collection"
 	depends on DEBUG_FS
-	---help---
+	help
 	  Enable light-weight counting of various locking related events
 	  in the system with minimal performance impact. This reduces
 	  the chance of application behavior change because of timing

arch/alpha/Kconfig

@@ -83,7 +83,7 @@ menu "System setup"
 choice
 	prompt "Alpha system type"
 	default ALPHA_GENERIC
-	---help---
+	help
 	  This is the system type of your hardware.  A "generic" kernel will
 	  run on any supported Alpha system. However, if you configure a
 	  kernel for your specific system, it will be faster and smaller.
@@ -480,7 +480,7 @@ config VGA_HOSE
 config ALPHA_QEMU
 	bool "Run under QEMU emulation"
 	depends on !ALPHA_GENERIC
-	---help---
+	help
 	  Assume the presence of special features supported by QEMU PALcode
 	  that reduce the overhead of system emulation.
 
@@ -495,7 +495,7 @@ config ALPHA_SRM
 	bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
 	depends on TTY
 	default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
-	---help---
+	help
 	  There are two different types of booting firmware on Alphas: SRM,
 	  which is command line driven, and ARC, which uses menus and arrow
 	  keys. Details about the Linux/Alpha booting process are contained in
@@ -521,7 +521,7 @@ config ARCH_MAY_HAVE_PC_FDC
 config SMP
 	bool "Symmetric multi-processing support"
 	depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
-	---help---
+	help
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, say N. If you have a system with more
 	  than one CPU, say Y.
@@ -569,7 +569,7 @@ config ALPHA_WTINT
 	default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
 	default n if !ALPHA_SRM && !ALPHA_GENERIC
 	default y if SMP
-	---help---
+	help
 	  The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
 	  to sleep until the next interrupt.  This may reduce the power
 	  consumed, and the heat produced by the computer.  However, it has
@@ -595,7 +595,7 @@ config NODES_SHIFT
 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 config ALPHA_LARGE_VMALLOC
 	bool
-	---help---
+	help
 	  Process creation and other aspects of virtual memory management can
 	  be streamlined if we restrict the kernel to one PGD for all vmalloc
 	  allocations.  This equates to about 8GB.
@@ -614,7 +614,7 @@ config VERBOSE_MCHECK_ON
 	int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 	depends on VERBOSE_MCHECK
 	default 1
-	---help---
+	help
 	  This option allows the default printing mode to be set, and then
 	  possibly overridden by a boot command argument.
 
@@ -633,7 +633,7 @@ choice
 	default HZ_128 if ALPHA_QEMU
 	default HZ_1200 if ALPHA_RAWHIDE
 	default HZ_1024
-	---help---
+	help
 	  The frequency at which timer interrupts occur.  A high frequency
 	  minimizes latency, whereas a low frequency minimizes overhead of
 	  process accounting.  The later effect is especially significant
@@ -668,7 +668,7 @@ config HZ
 config SRM_ENV
 	tristate "SRM environment through procfs"
 	depends on PROC_FS
-	---help---
+	help
 	  If you enable this option, a subdirectory inside /proc called
 	  /proc/srm_environment will give you access to the all important
 	  SRM environment variables (those which have a name) and also

arch/alpha/Kconfig.debug

@@ -9,7 +9,7 @@ config ALPHA_LEGACY_START_ADDRESS
 	bool "Legacy kernel start address"
 	depends on ALPHA_GENERIC
 	default n
-	---help---
+	help
 	  The 2.4 kernel changed the kernel start address from 0x310000
 	  to 0x810000 to make room for the Wildfire's larger SRM console.
 	  Recent consoles on Titan and Marvel machines also require the

arch/arc/Kconfig

@@ -348,7 +348,7 @@ config NODES_SHIFT
 	default "0" if !DISCONTIGMEM
 	default "1" if DISCONTIGMEM
 	depends on NEED_MULTIPLE_NODES
-	---help---
+	help
 	  Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory
 	  zones.
 

arch/arm/Kconfig

@@ -1655,7 +1655,7 @@ config UACCESS_WITH_MEMCPY
 config SECCOMP
 	bool
 	prompt "Enable seccomp to safely compute untrusted bytecode"
-	---help---
+	help
 	  This kernel feature is useful for number crunching applications
 	  that may need to compute untrusted bytecode during their
 	  execution. By using pipes or other transports made available to
@@ -1963,7 +1963,7 @@ config EFI
 	select EFI_STUB
 	select EFI_GENERIC_STUB
 	select EFI_RUNTIME_WRAPPERS
-	---help---
+	help
 	  This option provides support for runtime services provided
 	  by UEFI firmware (such as non-volatile variables, realtime
 	  clock, and platform reset). A UEFI stub is also provided to
@@ -2005,7 +2005,7 @@ comment "At least one emulation must be selected"
 config FPE_NWFPE
 	bool "NWFPE math emulation"
 	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
-	---help---
+	help
 	  Say Y to include the NWFPE floating point emulator in the kernel.
 	  This is necessary to run most binaries. Linux does not currently
 	  support floating point hardware so you need to say Y here even if
@@ -2029,7 +2029,7 @@ config FPE_NWFPE_XP
 config FPE_FASTFPE
 	bool "FastFPE math emulation (EXPERIMENTAL)"
 	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
-	---help---
+	help
 	  Say Y here to include the FAST floating point emulator in the kernel.
 	  This is an experimental much faster emulator which now also has full
 	  precision for the mantissa.  It does not support any exceptions.

arch/arm/Kconfig.debug

@@ -9,7 +9,7 @@ config ARM_PTDUMP_DEBUGFS
 	depends on MMU
 	select ARM_PTDUMP_CORE
 	select DEBUG_FS
-	---help---
+	help
 	  Say Y here if you want to show the kernel pagetable layout in a
 	  debugfs file. This information is only useful for kernel developers
 	  who are working in architecture specific areas of the kernel.
@@ -21,7 +21,7 @@ config DEBUG_WX
 	bool "Warn on W+X mappings at boot"
 	depends on MMU
 	select ARM_PTDUMP_CORE
-	---help---
+	help
 		Generate a warning if any W+X mappings are found at boot.
 
 		This is useful for discovering cases where the kernel is leaving

arch/arm/boot/deflate_xip_data.sh

@@ -56,7 +56,7 @@ trap 'rm -f "$XIPIMAGE.tmp"; exit 1' 1 2 3
 # substitute the data section by a compressed version
 $DD if="$XIPIMAGE" count=$data_start iflag=count_bytes of="$XIPIMAGE.tmp"
 $DD if="$XIPIMAGE"  skip=$data_start iflag=skip_bytes |
-$_GZIP -9 >> "$XIPIMAGE.tmp"
+$KGZIP -9 >> "$XIPIMAGE.tmp"
 
 # replace kernel binary
 mv -f "$XIPIMAGE.tmp" "$XIPIMAGE"

arch/arm/mach-footbridge/Kconfig

@@ -22,7 +22,7 @@ config ARCH_PERSONAL_SERVER
 	select ISA
 	select ISA_DMA
 	select FORCE_PCI
-	---help---
+	help
 	  Say Y here if you intend to run this kernel on the Compaq
 	  Personal Server.
 

arch/arm64/Kconfig

@@ -1035,7 +1035,7 @@ config CC_HAVE_SHADOW_CALL_STACK
 
 config SECCOMP
 	bool "Enable seccomp to safely compute untrusted bytecode"
-	---help---
+	help
 	  This kernel feature is useful for number crunching applications
 	  that may need to compute untrusted bytecode during their
 	  execution. By using pipes or other transports made available to
@@ -1068,7 +1068,7 @@ config KEXEC
 	depends on PM_SLEEP_SMP
 	select KEXEC_CORE
 	bool "kexec system call"
-	---help---
+	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
 	  but it is independent of the system firmware.   And like a reboot

arch/arm64/kvm/Kconfig

@@ -7,7 +7,7 @@ source "virt/lib/Kconfig"
 
 menuconfig VIRTUALIZATION
 	bool "Virtualization"
-	---help---
+	help
 	  Say Y here to get to see options for using your Linux host to run
 	  other operating systems inside virtual machines (guests).
 	  This option alone does not add any kernel code.
@@ -40,7 +40,7 @@ menuconfig KVM
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
 	select TASKSTATS
 	select TASK_DELAY_ACCT
-	---help---
+	help
 	  Support hosting virtualized guest machines.
 
 	  If unsure, say N.
@@ -53,7 +53,7 @@ config KVM_ARM_PMU
 	bool "Virtual Performance Monitoring Unit (PMU) support"
 	depends on HW_PERF_EVENTS
 	default y
-	---help---
+	help
 	  Adds support for a virtual Performance Monitoring Unit (PMU) in
 	  virtual machines.
 

arch/hexagon/Kconfig

@@ -31,13 +31,13 @@ config HEXAGON
 	select GENERIC_CLOCKEVENTS_BROADCAST
 	select MODULES_USE_ELF_RELA
 	select GENERIC_CPU_DEVICES
-	---help---
+	help
 	  Qualcomm Hexagon is a processor architecture designed for high
 	  performance and low power across a wide variety of applications.
 
 config HEXAGON_PHYS_OFFSET
 	def_bool y
-	---help---
+	help
 	  Platforms that don't load the kernel at zero set this.
 
 config FRAME_POINTER
@@ -83,7 +83,7 @@ choice
 
 config HEXAGON_COMET
 	bool "Comet Board"
-	---help---
+	help
 	  Support for the Comet platform.
 
 endchoice
@@ -104,7 +104,7 @@ config CMDLINE
 
 config SMP
 	bool "Multi-Processing support"
-	---help---
+	help
 	  Enables SMP support in the kernel.  If unsure, say "Y"
 
 config NR_CPUS
@@ -112,7 +112,7 @@ config NR_CPUS
 	range 2 6 if SMP
 	default "1" if !SMP
 	default "6" if SMP
-	---help---
+	help
 	  This allows you to specify the maximum number of CPUs which this
 	  kernel will support.  The maximum supported value is 6 and the
 	  minimum value which makes sense is 2.
@@ -123,7 +123,7 @@ config NR_CPUS
 choice
 	prompt "Kernel page size"
 	default PAGE_SIZE_4KB
-	---help---
+	help
 	  Changes the default page size; use with caution.
 
 config PAGE_SIZE_4KB

arch/ia64/Kconfig

@@ -243,7 +243,7 @@ config HOTPLUG_CPU
 	bool "Support for hot-pluggable CPUs"
 	depends on SMP
 	default n
-	---help---
+	help
 	  Say Y here to experiment with turning CPUs off and on.  CPUs
 	  can be controlled through /sys/devices/system/cpu/cpu#.
 	  Say N if you want to disable CPU hotplug.
@@ -266,7 +266,7 @@ config PERMIT_BSP_REMOVE
 	bool "Support removal of Bootstrap Processor"
 	depends on HOTPLUG_CPU
 	default n
-	---help---
+	help
 	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 	support. 
 
@@ -274,7 +274,7 @@ config FORCE_CPEI_RETARGET
 	bool "Force assumption that CPEI can be re-targeted"
 	depends on PERMIT_BSP_REMOVE
 	default n
-	---help---
+	help
 	Say Y if you need to force the assumption that CPEI can be re-targeted to
 	any cpu in the system. This hint is available via ACPI 3.0 specifications.
 	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.

arch/ia64/Makefile

@@ -40,7 +40,7 @@ $(error Sorry, you need a newer version of the assember, one that is built from
 endif
 
 quiet_cmd_gzip = GZIP    $@
-cmd_gzip = cat $(real-prereqs) | $(_GZIP) -n -f -9 > $@
+cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@
 
 quiet_cmd_objcopy = OBJCOPY $@
 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

arch/m68k/Kconfig.cpu

@@ -343,7 +343,7 @@ config M68KFPU_EMU_ONLY
 config ADVANCED
 	bool "Advanced configuration options"
 	depends on MMU
-	---help---
+	help
 	  This gives you access to some advanced options for the CPU. The
 	  defaults should be fine for most users, but these options may make
 	  it possible for you to improve performance somewhat if you know what
@@ -358,7 +358,7 @@ config ADVANCED
 config RMW_INSNS
 	bool "Use read-modify-write instructions"
 	depends on ADVANCED
-	---help---
+	help
 	  This allows to use certain instructions that work with indivisible
 	  read-modify-write bus cycles. While this is faster than the
 	  workaround of disabling interrupts, it can conflict with DMA
@@ -386,7 +386,7 @@ config ARCH_DISCONTIGMEM_ENABLE
 config 060_WRITETHROUGH
 	bool "Use write-through caching for 68060 supervisor accesses"
 	depends on ADVANCED && M68060
-	---help---
+	help
 	  The 68060 generally uses copyback caching of recently accessed data.
 	  Copyback caching means that memory writes will be held in an on-chip
 	  cache and only written back to memory some time later.  Saying Y

arch/m68k/Kconfig.devices

@@ -59,7 +59,7 @@ config NFETH
 config ATARI_ETHERNAT
 	bool "Atari EtherNAT Ethernet support"
 	depends on ATARI
-	---help---
+	help
 	  Say Y to include support for the EtherNAT network adapter for the
 	  CT/60 extension port.
 
@@ -69,7 +69,7 @@ config ATARI_ETHERNAT
 config ATARI_ETHERNEC
 	bool "Atari EtherNEC Ethernet support"
 	depends on ATARI_ROM_ISA
-	---help---
+	help
 	  Say Y to include support for the EtherNEC network adapter for the
 	  ROM port. The driver works by polling instead of interrupts, so it
 	  is quite slow.
@@ -120,7 +120,7 @@ config HPAPCI
 config SERIAL_CONSOLE
 	bool "Support for serial port console"
 	depends on AMIGA_BUILTIN_SERIAL=y
-	---help---
+	help
 	  If you say Y here, it will be possible to use a serial port as the
 	  system console (the system console is the device which receives all
 	  kernel messages and warnings and which allows logins in single user

arch/m68k/Kconfig.machine

@@ -437,7 +437,7 @@ config ROMSIZE
 
 choice
 	prompt "Kernel executes from"
-	---help---
+	help
 	  Choose the memory type that the kernel will be running in.
 
 config RAMKERNEL

arch/m68k/Makefile

@@ -135,10 +135,10 @@ vmlinux.gz: vmlinux
 ifndef CONFIG_KGDB
 	cp vmlinux vmlinux.tmp
 	$(STRIP) vmlinux.tmp
-	$(_GZIP) -9c vmlinux.tmp >vmlinux.gz
+	$(KGZIP) -9c vmlinux.tmp >vmlinux.gz
 	rm vmlinux.tmp
 else
-	$(_GZIP) -9c vmlinux >vmlinux.gz
+	$(KGZIP) -9c vmlinux >vmlinux.gz
 endif
 
 bzImage: vmlinux.bz2
@@ -148,10 +148,10 @@ vmlinux.bz2: vmlinux
 ifndef CONFIG_KGDB
 	cp vmlinux vmlinux.tmp
 	$(STRIP) vmlinux.tmp
-	$(_BZIP2) -1c vmlinux.tmp >vmlinux.bz2
+	$(KBZIP2) -1c vmlinux.tmp >vmlinux.bz2
 	rm vmlinux.tmp
 else
-	$(_BZIP2) -1c vmlinux >vmlinux.bz2
+	$(KBZIP2) -1c vmlinux >vmlinux.bz2
 endif
 
 archclean:

arch/mips/Kconfig

@@ -2742,7 +2742,7 @@ config RELOCATION_TABLE_SIZE
 	depends on RELOCATABLE
 	range 0x0 0x01000000
 	default "0x00100000"
-	---help---
+	help
 	  A table of relocation data will be appended to the kernel binary
 	  and parsed at boot to fix up the relocated kernel.
 
@@ -2756,7 +2756,7 @@ config RELOCATION_TABLE_SIZE
 config RANDOMIZE_BASE
 	bool "Randomize the address of the kernel image"
 	depends on RELOCATABLE
-	---help---
+	help
 	  Randomizes the physical and virtual address at which the
 	  kernel image is loaded, as a security feature that
 	  deters exploit attempts relying on knowledge of the location
@@ -2774,7 +2774,7 @@ config RANDOMIZE_BASE_MAX_OFFSET
 	range 0x0 0x40000000 if EVA || 64BIT
 	range 0x0 0x08000000
 	default "0x01000000"
-	---help---
+	help
 	  When kASLR is active, this provides the maximum offset that will
 	  be applied to the kernel image. It should be set according to the
 	  amount of physical RAM available in the target system minus

arch/mips/kvm/Kconfig

@@ -6,7 +6,7 @@ source "virt/kvm/Kconfig"
 
 menuconfig VIRTUALIZATION
 	bool "Virtualization"
-	---help---
+	help
 	  Say Y here to get to see options for using your Linux host to run
 	  other operating systems inside virtual machines (guests).
 	  This option alone does not add any kernel code.
@@ -27,7 +27,7 @@ config KVM
 	select KVM_MMIO
 	select MMU_NOTIFIER
 	select SRCU
-	---help---
+	help
 	  Support for hosting Guest kernels.
 
 choice
@@ -37,7 +37,7 @@ choice
 
 config KVM_MIPS_TE
 	bool "Trap & Emulate"
-	---help---
+	help
 	  Use trap and emulate to virtualize 32-bit guests in user mode. This
 	  does not require any special hardware Virtualization support beyond
 	  standard MIPS32/64 r2 or later, but it does require the guest kernel
@@ -46,7 +46,7 @@ config KVM_MIPS_TE
 
 config KVM_MIPS_VZ
 	bool "MIPS Virtualization (VZ) ASE"
-	---help---
+	help
 	  Use the MIPS Virtualization (VZ) ASE to virtualize guests. This
 	  supports running unmodified guest kernels (with CONFIG_KVM_GUEST=n),
 	  but requires hardware support.
@@ -57,7 +57,7 @@ config KVM_MIPS_DYN_TRANS
 	bool "KVM/MIPS: Dynamic binary translation to reduce traps"
 	depends on KVM_MIPS_TE
 	default y
-	---help---
+	help
 	  When running in Trap & Emulate mode patch privileged
 	  instructions to reduce the number of traps.
 
@@ -66,7 +66,7 @@ config KVM_MIPS_DYN_TRANS
 config KVM_MIPS_DEBUG_COP0_COUNTERS
 	bool "Maintain counters for COP0 accesses"
 	depends on KVM
-	---help---
+	help
 	  Maintain statistics for Guest COP0 accesses.
 	  A histogram of COP0 accesses is printed when the VM is
 	  shutdown.