tools/scripts/Makefile.include - pub/scm/linux/kernel/git/stable/linux-stable - Git at Google


            
            # SPDX-License-Identifier: GPL-2.0

            
            ifneq ($(O),)

            
            ifeq ($(origin O), command line)

            
                    $(if $(shell cd $(PWD); test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)

            
            	ABSOLUTE_O := $(shell cd $(PWD); cd $(O) ; pwd)

            
            	OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)

            
            	COMMAND_O := O=$(ABSOLUTE_O)

            
            ifeq ($(objtree),)

            
            	objtree := $(O)

            
            endif

            
            endif

            
            endif


            # check that the output directory actually exists

            
            ifneq ($(OUTPUT),)

            
            OUTDIR := $(shell cd $(OUTPUT) && pwd)

            
            $(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))

            
            endif


            #

            
            # Include saner warnings here, which can catch bugs:

            
            #

            
            EXTRA_WARNINGS := -Wbad-function-cast

            
            EXTRA_WARNINGS += -Wdeclaration-after-statement

            
            EXTRA_WARNINGS += -Wformat-security

            
            EXTRA_WARNINGS += -Wformat-y2k

            
            EXTRA_WARNINGS += -Winit-self

            
            EXTRA_WARNINGS += -Wmissing-declarations

            
            EXTRA_WARNINGS += -Wmissing-prototypes

            
            EXTRA_WARNINGS += -Wnested-externs

            
            EXTRA_WARNINGS += -Wno-system-headers

            
            EXTRA_WARNINGS += -Wold-style-definition

            
            EXTRA_WARNINGS += -Wpacked

            
            EXTRA_WARNINGS += -Wredundant-decls

            
            EXTRA_WARNINGS += -Wstrict-prototypes

            
            EXTRA_WARNINGS += -Wswitch-default

            
            EXTRA_WARNINGS += -Wswitch-enum

            
            EXTRA_WARNINGS += -Wundef

            
            EXTRA_WARNINGS += -Wwrite-strings

            
            EXTRA_WARNINGS += -Wformat

            
            EXTRA_WARNINGS += -Wno-type-limits


            # Makefiles suck: This macro sets a default value of $(2) for the

            
            # variable named by $(1), unless the variable has been set by

            
            # environment or command line. This is necessary for CC and AR

            
            # because make sets default values, so the simpler ?= approach

            
            # won't work as expected.

            
            define allow-override

            
              $(if $(or $(findstring environment,$(origin $(1))),\

            
                        $(findstring command line,$(origin $(1)))),,\

            
                $(eval $(1) = $(2)))

            
            endef


            ifneq ($(LLVM),)

            
              ifneq ($(filter %/,$(LLVM)),)

            
                LLVM_PREFIX := $(LLVM)

            
              else ifneq ($(filter -%,$(LLVM)),)

            
                LLVM_SUFFIX := $(LLVM)

            
              else ifneq ($(LLVM),1)

            
                $(error Invalid value for LLVM, see Documentation/kbuild/llvm.rst)

            
              endif


              $(call allow-override,CC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))

            
              $(call allow-override,CLANG,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))

            
              $(call allow-override,HOSTCC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))

            
              $(call allow-override,AR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX))

            
              $(call allow-override,HOSTAR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX))

            
              $(call allow-override,LD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX))

            
              $(call allow-override,HOSTLD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX))

            
              $(call allow-override,CXX,$(LLVM_PREFIX)clang++$(LLVM_SUFFIX))

            
              $(call allow-override,STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX))

            
              $(call allow-override,LLVM_STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX))

            
              $(call allow-override,LLC,$(LLVM_PREFIX)llc$(LLVM_SUFFIX))

            
              $(call allow-override,LLVM_CONFIG,$(LLVM_PREFIX)llvm-config$(LLVM_SUFFIX))

            
              $(call allow-override,LLVM_OBJCOPY,$(LLVM_PREFIX)llvm-objcopy$(LLVM_SUFFIX))

            
              $(call allow-override,READELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX))

            
              $(call allow-override,HOSTREADELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX))

            
            else

            
              # Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix.

            
              $(call allow-override,CC,$(CROSS_COMPILE)gcc)

            
              $(call allow-override,AR,$(CROSS_COMPILE)ar)

            
              $(call allow-override,LD,$(CROSS_COMPILE)ld)

            
              $(call allow-override,CXX,$(CROSS_COMPILE)g++)

            
              $(call allow-override,STRIP,$(CROSS_COMPILE)strip)

            
              $(call allow-override,READELF,$(CROSS_COMPILE)readelf)


              # Host versions aren't prefixed

            
              $(call allow-override,HOSTAR,ar)

            
              $(call allow-override,HOSTCC,gcc)

            
              $(call allow-override,HOSTLD,ld)

            
              $(call allow-override,HOSTREADELF,readelf)


              # Some tools still require Clang, LLC and/or LLVM utils

            
              $(call allow-override,CLANG,clang)

            
              $(call allow-override,LLC,llc)

            
              $(call allow-override,LLVM_CONFIG,llvm-config)

            
              $(call allow-override,LLVM_OBJCOPY,llvm-objcopy)

            
              $(call allow-override,LLVM_STRIP,llvm-strip)

            
            endif


            # The CC_NO_CLANG probe also runs at parse time for targets that never

            
            # compile, so guard it with 'command -v': when the compiler is not yet

            
            # installed, e.g. the first install-build-deps run, it would otherwise

            
            # spew "gcc: not found". Only the first word of CC is consulted, as CC

            
            # may carry arguments, e.g. 'ccache gcc'. A missing compiler leaves

            
            # CC_NO_CLANG at 1, as if the probe had failed.

            
            CC_NO_CLANG := $(shell if command -v $(firstword $(CC)) >/dev/null 2>&1; then $(CC) -dM -E -x c /dev/null; fi | grep -Fq "__clang__"; echo $$?)


            # Some tools require bpftool

            
            SYSTEM_BPFTOOL	?= bpftool


            RUSTC		?= rustc


            ifeq ($(CC_NO_CLANG), 1)

            
            EXTRA_WARNINGS += -Wstrict-aliasing=3


            else ifneq ($(CROSS_COMPILE),)

            
            # Allow userspace to override CLANG_CROSS_FLAGS to specify their own

            
            # sysroots and flags or to avoid the GCC call in pure Clang builds.

            
            ifeq ($(CLANG_CROSS_FLAGS),)

            
            CLANG_TARGET := $(notdir $(CROSS_COMPILE:%-=%))

            
            CLANG_TARGET := $(subst s390-linux,s390x-linux,$(CLANG_TARGET))

            
            CLANG_CROSS_FLAGS := --target=$(CLANG_TARGET)

            
            GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)gcc 2>/dev/null))

            
            ifneq ($(GCC_TOOLCHAIN_DIR),)

            
            CLANG_CROSS_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))

            
            CLANG_CROSS_FLAGS += --sysroot=$(shell $(CROSS_COMPILE)gcc -print-sysroot)

            
            CLANG_CROSS_FLAGS += --gcc-toolchain=$(realpath $(GCC_TOOLCHAIN_DIR)/..)

            
            endif # GCC_TOOLCHAIN_DIR

            
            endif # CLANG_CROSS_FLAGS

            
            CFLAGS += $(CLANG_CROSS_FLAGS)

            
            AFLAGS += $(CLANG_CROSS_FLAGS)

            
            else

            
            CLANG_CROSS_FLAGS :=

            
            endif # CROSS_COMPILE


            # Hack to avoid type-punned warnings on old systems such as RHEL5:

            
            # We should be changing CFLAGS and checking gcc version, but this

            
            # will do for now and keep the above -Wstrict-aliasing=3 in place

            
            # in newer systems.

            
            # Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h

            
            #

            
            # See https://lore.kernel.org/lkml/9a8748490611281710g78402fbeh8ff7fcc162dbcbca@mail.gmail.com/

            
            # and https://gcc.gnu.org/gcc-4.8/changes.html,

            
            # that takes into account Linus's comments (search for Wshadow) for the reasoning about

            
            # -Wshadow not being interesting before gcc 4.8.


            ifneq ($(filter 3.%,$(MAKE_VERSION)),)  # make-3

            
            EXTRA_WARNINGS += -fno-strict-aliasing

            
            EXTRA_WARNINGS += -Wno-shadow

            
            else

            
            EXTRA_WARNINGS += -Wshadow

            
            endif


            ifneq ($(findstring $(MAKEFLAGS), w),w)

            
            PRINT_DIR = --no-print-directory

            
            else

            
            NO_SUBDIR = :

            
            endif


            # Beautify output

            
            # ---------------------------------------------------------------------------

            
            #

            
            # Most of build commands in Kbuild start with "cmd_". You can optionally define

            
            # "quiet_cmd_*". If defined, the short log is printed. Otherwise, no log from

            
            # that command is printed by default.

            
            #

            
            # e.g.)

            
            #    quiet_cmd_depmod = DEPMOD  $(MODLIB)

            
            #          cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE)

            
            #

            
            # A simple variant is to prefix commands with $(Q) - that's useful

            
            # for commands that shall be hidden in non-verbose mode.

            
            #

            
            #    $(Q)$(MAKE) $(build)=scripts/basic

            
            #

            
            # To put more focus on warnings, be less verbose as default

            
            # Use 'make V=1' to see the full commands


            ifeq ($(V),1)

            
              quiet =

            
              Q =

            
            else

            
              quiet = quiet_

            
              Q = @

            
            endif


            # If the user is running make -s (silent mode), suppress echoing of commands

            
            # make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS.

            
            ifeq ($(filter 3.%,$(MAKE_VERSION)),)

            
            short-opts := $(firstword -$(MAKEFLAGS))

            
            else

            
            short-opts := $(filter-out --%,$(MAKEFLAGS))

            
            endif


            ifneq ($(findstring s,$(short-opts)),)

            
              silent=1

            
              quiet=silent_

            
            endif


            export quiet Q


            #

            
            # Define a callable command for descending to a new directory

            
            #

            
            # Call by doing: $(call descend,directory[,target])

            
            #

            
            descend = \

            
            	+mkdir -p $(OUTPUT)$(1) && \

            
            	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)


            QUIET_SUBDIR0  = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir

            
            QUIET_SUBDIR1  =


            ifneq ($(silent),1)

            
              ifneq ($(V),1)

            
            	QUIET_CC       = @echo '  CC      '$@;

            
            	QUIET_CC_FPIC  = @echo '  CC FPIC '$@;

            
            	QUIET_CLANG    = @echo '  CLANG   '$@;

            
            	QUIET_AR       = @echo '  AR      '$@;

            
            	QUIET_LINK     = @echo '  LINK    '$@;

            
            	QUIET_MKDIR    = @echo '  MKDIR   '$@;

            
            	QUIET_GEN      = @echo '  GEN     '$@;

            
            	QUIET_SUBDIR0  = +@subdir=

            
            	QUIET_SUBDIR1  = ;$(NO_SUBDIR) \

            
            			  echo '  SUBDIR  '$$subdir; \

            
            			 $(MAKE) $(PRINT_DIR) -C $$subdir

            
            	QUIET_FLEX     = @echo '  FLEX    '$@;

            
            	QUIET_BISON    = @echo '  BISON   '$@;

            
            	QUIET_GENSKEL  = @echo '  GENSKEL '$@;


            	descend = \

            
            		+@echo	       '  DESCEND '$(1); \

            
            		mkdir -p $(OUTPUT)$(1) && \

            
            		$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)


            	QUIET_CLEAN    = @printf '  CLEAN   %s\n' $1;

            
            	QUIET_INSTALL  = @printf '  INSTALL %s\n' $1;

            
            	QUIET_UNINST   = @printf '  UNINST  %s\n' $1;

            
              endif

            
            endif


            pound := \#
	# SPDX-License-Identifier: GPL-2.0
	ifneq ($(O),)
	ifeq ($(origin O), command line)
	$(if $(shell cd $(PWD); test -d $(O) \|\| echo $(O)),$(error O=$(O) does not exist),)
	ABSOLUTE_O := $(shell cd $(PWD); cd $(O) ; pwd)
	OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
	COMMAND_O := O=$(ABSOLUTE_O)
	ifeq ($(objtree),)
	objtree := $(O)
	endif
	endif
	endif

	# check that the output directory actually exists
	ifneq ($(OUTPUT),)
	OUTDIR := $(shell cd $(OUTPUT) && pwd)
	$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
	endif

	#
	# Include saner warnings here, which can catch bugs:
	#
	EXTRA_WARNINGS := -Wbad-function-cast
	EXTRA_WARNINGS += -Wdeclaration-after-statement
	EXTRA_WARNINGS += -Wformat-security
	EXTRA_WARNINGS += -Wformat-y2k
	EXTRA_WARNINGS += -Winit-self
	EXTRA_WARNINGS += -Wmissing-declarations
	EXTRA_WARNINGS += -Wmissing-prototypes
	EXTRA_WARNINGS += -Wnested-externs
	EXTRA_WARNINGS += -Wno-system-headers
	EXTRA_WARNINGS += -Wold-style-definition
	EXTRA_WARNINGS += -Wpacked
	EXTRA_WARNINGS += -Wredundant-decls
	EXTRA_WARNINGS += -Wstrict-prototypes
	EXTRA_WARNINGS += -Wswitch-default
	EXTRA_WARNINGS += -Wswitch-enum
	EXTRA_WARNINGS += -Wundef
	EXTRA_WARNINGS += -Wwrite-strings
	EXTRA_WARNINGS += -Wformat
	EXTRA_WARNINGS += -Wno-type-limits

	# Makefiles suck: This macro sets a default value of $(2) for the
	# variable named by $(1), unless the variable has been set by
	# environment or command line. This is necessary for CC and AR
	# because make sets default values, so the simpler ?= approach
	# won't work as expected.
	define allow-override
	$(if $(or $(findstring environment,$(origin $(1))),\
	$(findstring command line,$(origin $(1)))),,\
	$(eval $(1) = $(2)))
	endef

	ifneq ($(LLVM),)
	ifneq ($(filter %/,$(LLVM)),)
	LLVM_PREFIX := $(LLVM)
	else ifneq ($(filter -%,$(LLVM)),)
	LLVM_SUFFIX := $(LLVM)
	else ifneq ($(LLVM),1)
	$(error Invalid value for LLVM, see Documentation/kbuild/llvm.rst)
	endif

	$(call allow-override,CC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))
	$(call allow-override,CLANG,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))
	$(call allow-override,HOSTCC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))
	$(call allow-override,AR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX))
	$(call allow-override,HOSTAR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX))
	$(call allow-override,LD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX))
	$(call allow-override,HOSTLD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX))
	$(call allow-override,CXX,$(LLVM_PREFIX)clang++$(LLVM_SUFFIX))
	$(call allow-override,STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX))
	$(call allow-override,LLVM_STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX))
	$(call allow-override,LLC,$(LLVM_PREFIX)llc$(LLVM_SUFFIX))
	$(call allow-override,LLVM_CONFIG,$(LLVM_PREFIX)llvm-config$(LLVM_SUFFIX))
	$(call allow-override,LLVM_OBJCOPY,$(LLVM_PREFIX)llvm-objcopy$(LLVM_SUFFIX))
	$(call allow-override,READELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX))
	$(call allow-override,HOSTREADELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX))
	else
	# Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix.
	$(call allow-override,CC,$(CROSS_COMPILE)gcc)
	$(call allow-override,AR,$(CROSS_COMPILE)ar)
	$(call allow-override,LD,$(CROSS_COMPILE)ld)
	$(call allow-override,CXX,$(CROSS_COMPILE)g++)
	$(call allow-override,STRIP,$(CROSS_COMPILE)strip)
	$(call allow-override,READELF,$(CROSS_COMPILE)readelf)

	# Host versions aren't prefixed
	$(call allow-override,HOSTAR,ar)
	$(call allow-override,HOSTCC,gcc)
	$(call allow-override,HOSTLD,ld)
	$(call allow-override,HOSTREADELF,readelf)

	# Some tools still require Clang, LLC and/or LLVM utils
	$(call allow-override,CLANG,clang)
	$(call allow-override,LLC,llc)
	$(call allow-override,LLVM_CONFIG,llvm-config)
	$(call allow-override,LLVM_OBJCOPY,llvm-objcopy)
	$(call allow-override,LLVM_STRIP,llvm-strip)
	endif

	# The CC_NO_CLANG probe also runs at parse time for targets that never
	# compile, so guard it with 'command -v': when the compiler is not yet
	# installed, e.g. the first install-build-deps run, it would otherwise
	# spew "gcc: not found". Only the first word of CC is consulted, as CC
	# may carry arguments, e.g. 'ccache gcc'. A missing compiler leaves
	# CC_NO_CLANG at 1, as if the probe had failed.
	CC_NO_CLANG := $(shell if command -v $(firstword $(CC)) >/dev/null 2>&1; then $(CC) -dM -E -x c /dev/null; fi \| grep -Fq "__clang__"; echo $$?)

	# Some tools require bpftool
	SYSTEM_BPFTOOL ?= bpftool

	RUSTC ?= rustc

	ifeq ($(CC_NO_CLANG), 1)
	EXTRA_WARNINGS += -Wstrict-aliasing=3

	else ifneq ($(CROSS_COMPILE),)
	# Allow userspace to override CLANG_CROSS_FLAGS to specify their own
	# sysroots and flags or to avoid the GCC call in pure Clang builds.
	ifeq ($(CLANG_CROSS_FLAGS),)
	CLANG_TARGET := $(notdir $(CROSS_COMPILE:%-=%))
	CLANG_TARGET := $(subst s390-linux,s390x-linux,$(CLANG_TARGET))
	CLANG_CROSS_FLAGS := --target=$(CLANG_TARGET)
	GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)gcc 2>/dev/null))
	ifneq ($(GCC_TOOLCHAIN_DIR),)
	CLANG_CROSS_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
	CLANG_CROSS_FLAGS += --sysroot=$(shell $(CROSS_COMPILE)gcc -print-sysroot)
	CLANG_CROSS_FLAGS += --gcc-toolchain=$(realpath $(GCC_TOOLCHAIN_DIR)/..)
	endif # GCC_TOOLCHAIN_DIR
	endif # CLANG_CROSS_FLAGS
	CFLAGS += $(CLANG_CROSS_FLAGS)
	AFLAGS += $(CLANG_CROSS_FLAGS)
	else
	CLANG_CROSS_FLAGS :=
	endif # CROSS_COMPILE

	# Hack to avoid type-punned warnings on old systems such as RHEL5:
	# We should be changing CFLAGS and checking gcc version, but this
	# will do for now and keep the above -Wstrict-aliasing=3 in place
	# in newer systems.
	# Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h
	#
	# See https://lore.kernel.org/lkml/9a8748490611281710g78402fbeh8ff7fcc162dbcbca@mail.gmail.com/
	# and https://gcc.gnu.org/gcc-4.8/changes.html,
	# that takes into account Linus's comments (search for Wshadow) for the reasoning about
	# -Wshadow not being interesting before gcc 4.8.

	ifneq ($(filter 3.%,$(MAKE_VERSION)),) # make-3
	EXTRA_WARNINGS += -fno-strict-aliasing
	EXTRA_WARNINGS += -Wno-shadow
	else
	EXTRA_WARNINGS += -Wshadow
	endif

	ifneq ($(findstring $(MAKEFLAGS), w),w)
	PRINT_DIR = --no-print-directory
	else
	NO_SUBDIR = :
	endif

	# Beautify output
	# ---------------------------------------------------------------------------
	#
	# Most of build commands in Kbuild start with "cmd_". You can optionally define
	# "quiet_cmd_*". If defined, the short log is printed. Otherwise, no log from
	# that command is printed by default.
	#
	# e.g.)
	# quiet_cmd_depmod = DEPMOD $(MODLIB)
	# cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE)
	#
	# A simple variant is to prefix commands with $(Q) - that's useful
	# for commands that shall be hidden in non-verbose mode.
	#
	# $(Q)$(MAKE) $(build)=scripts/basic
	#
	# To put more focus on warnings, be less verbose as default
	# Use 'make V=1' to see the full commands

	ifeq ($(V),1)
	quiet =
	Q =
	else
	quiet = quiet_
	Q = @
	endif

	# If the user is running make -s (silent mode), suppress echoing of commands
	# make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS.
	ifeq ($(filter 3.%,$(MAKE_VERSION)),)
	short-opts := $(firstword -$(MAKEFLAGS))
	else
	short-opts := $(filter-out --%,$(MAKEFLAGS))
	endif

	ifneq ($(findstring s,$(short-opts)),)
	silent=1
	quiet=silent_
	endif

	export quiet Q

	#
	# Define a callable command for descending to a new directory
	#
	# Call by doing: $(call descend,directory[,target])
	#
	descend = \
	+mkdir -p $(OUTPUT)$(1) && \
	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)

	QUIET_SUBDIR0 = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir
	QUIET_SUBDIR1 =

	ifneq ($(silent),1)
	ifneq ($(V),1)
	QUIET_CC = @echo ' CC '$@;
	QUIET_CC_FPIC = @echo ' CC FPIC '$@;
	QUIET_CLANG = @echo ' CLANG '$@;
	QUIET_AR = @echo ' AR '$@;
	QUIET_LINK = @echo ' LINK '$@;
	QUIET_MKDIR = @echo ' MKDIR '$@;
	QUIET_GEN = @echo ' GEN '$@;
	QUIET_SUBDIR0 = +@subdir=
	QUIET_SUBDIR1 = ;$(NO_SUBDIR) \
	echo ' SUBDIR '$$subdir; \
	$(MAKE) $(PRINT_DIR) -C $$subdir
	QUIET_FLEX = @echo ' FLEX '$@;
	QUIET_BISON = @echo ' BISON '$@;
	QUIET_GENSKEL = @echo ' GENSKEL '$@;

	descend = \
	+@echo ' DESCEND '$(1); \
	mkdir -p $(OUTPUT)$(1) && \
	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)

	QUIET_CLEAN = @printf ' CLEAN %s\n' $1;
	QUIET_INSTALL = @printf ' INSTALL %s\n' $1;
	QUIET_UNINST = @printf ' UNINST %s\n' $1;
	endif
	endif

	pound := \#