[mirror_ubuntu-bionic-kernel.git] / scripts / Makefile.lib

# Backward compatibility
asflags-y  += $(EXTRA_AFLAGS)
ccflags-y  += $(EXTRA_CFLAGS)
cppflags-y += $(EXTRA_CPPFLAGS)
ldflags-y  += $(EXTRA_LDFLAGS)

#
# flags that take effect in sub directories
export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)

# Figure out what we need to build from the various variables
# ===========================================================================

# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version

obj-m := $(filter-out $(obj-y),$(obj-m))

# Libraries are always collected in one lib file.
# Filter out objects already built-in

lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))


# Handle objects in subdirs
# ---------------------------------------------------------------------------
# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
#   and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m) 
#   and add the directory to the list of dirs to descend into: $(subdir-m)

# Determine modorder.
# Unfortunately, we don't have information about ordering between -y
# and -m subdirs.  Just put -y's first.
modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))

__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y	+= $(__subdir-y)
__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m	+= $(__subdir-m)
obj-y		:= $(patsubst %/, %/built-in.o, $(obj-y))
obj-m		:= $(filter-out %/, $(obj-m))

# Subdirectories we need to descend into

subdir-ym	:= $(sort $(subdir-y) $(subdir-m))

# if $(foo-objs) exists, foo.o is a composite object 
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used   := $(multi-used-y) $(multi-used-m)
single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))

# Build list of the parts of our composite objects, our composite
# objects depend on those (obviously)
multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs   := $(multi-objs-y) $(multi-objs-m)

# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# tell kbuild to descend
subdir-obj-y := $(filter %/built-in.o, $(obj-y))

# $(obj-dirs) is a list of directories that contain object files
obj-dirs := $(dir $(multi-objs) $(subdir-obj-y))

# Replace multi-part objects by their individual parts, look at local dir only
real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))

# Add subdir path

extra-y		:= $(addprefix $(obj)/,$(extra-y))
always		:= $(addprefix $(obj)/,$(always))
targets		:= $(addprefix $(obj)/,$(targets))
modorder	:= $(addprefix $(obj)/,$(modorder))
obj-y		:= $(addprefix $(obj)/,$(obj-y))
obj-m		:= $(addprefix $(obj)/,$(obj-m))
lib-y		:= $(addprefix $(obj)/,$(lib-y))
subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
real-objs-y	:= $(addprefix $(obj)/,$(real-objs-y))
real-objs-m	:= $(addprefix $(obj)/,$(real-objs-m))
single-used-m	:= $(addprefix $(obj)/,$(single-used-m))
multi-used-y	:= $(addprefix $(obj)/,$(multi-used-y))
multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
multi-objs-y	:= $(addprefix $(obj)/,$(multi-objs-y))
multi-objs-m	:= $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
obj-dirs	:= $(addprefix $(obj)/,$(obj-dirs))

# These flags are needed for modversions and compiling, so we define them here
# already
# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will 
# end up in (or would, if it gets compiled in)
# Note: It's possible that one object gets potentially linked into more
#       than one module. In that case KBUILD_MODNAME will be set to foo_bar,
#       where foo and bar are the name of the modules.
name-fix = $(subst $(comma),_,$(subst -,_,$1))
basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
modname_flags  = $(if $(filter 1,$(words $(modname))),\
                 -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")

#hash values
ifdef CONFIG_DYNAMIC_DEBUG
debug_flags = -D"DEBUG_HASH=$(shell ./scripts/basic/hash djb2 $(@D)$(modname))"\
              -D"DEBUG_HASH2=$(shell ./scripts/basic/hash r5 $(@D)$(modname))"
else
debug_flags =
endif

orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
                 $(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
_a_flags       = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
                 $(asflags-y) $(AFLAGS_$(basetarget).o)
_cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))

#
# Enable gcov profiling flags for a file, directory or for all files depending
# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
# (in this order)
#
ifeq ($(CONFIG_GCOV_KERNEL),y)
_c_flags += $(if $(patsubst n%,, \
		$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
		$(CFLAGS_GCOV))
endif

ifdef CONFIG_SYMBOL_PREFIX
_cpp_flags += -DSYMBOL_PREFIX=$(patsubst "%",%,$(CONFIG_SYMBOL_PREFIX))
endif


# If building the kernel in a separate objtree expand all occurrences
# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').

ifeq ($(KBUILD_SRC),)
__c_flags	= $(_c_flags)
__a_flags	= $(_a_flags)
__cpp_flags     = $(_cpp_flags)
else

# -I$(obj) locates generated .h files
# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
#   and locates generated .h files
# FIXME: Replace both with specific CFLAGS* statements in the makefiles
__c_flags	= $(call addtree,-I$(obj)) $(call flags,_c_flags)
__a_flags	=                          $(call flags,_a_flags)
__cpp_flags     =                          $(call flags,_cpp_flags)
endif

c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
		 $(__c_flags) $(modkern_cflags)                           \
		 -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) \
		  $(debug_flags)

a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
		 $(__a_flags) $(modkern_aflags)

cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
		 $(__cpp_flags)

ld_flags       = $(LDFLAGS) $(ldflags-y)

# Finds the multi-part object the current object will be linked into
modname-multi = $(sort $(foreach m,$(multi-used),\
		$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))

# Shipped files
# ===========================================================================

quiet_cmd_shipped = SHIPPED $@
cmd_shipped = cat $< > $@

$(obj)/%:: $(src)/%_shipped
	$(call cmd,shipped)

# Commands useful for building a boot image
# ===========================================================================
# 
#	Use as following:
#
#	target: source(s) FORCE
#		$(if_changed,ld/objcopy/gzip)
#
#	and add target to extra-y so that we know we have to
#	read in the saved command line

# Linking
# ---------------------------------------------------------------------------

quiet_cmd_ld = LD      $@
cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
	       $(filter-out FORCE,$^) -o $@ 

# Objcopy
# ---------------------------------------------------------------------------

quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

# Gzip
# ---------------------------------------------------------------------------

quiet_cmd_gzip = GZIP    $@
cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -f -9 > $@) || \
	(rm -f $@ ; false)


# Bzip2
# ---------------------------------------------------------------------------

# Bzip2 and LZMA do not include size in file... so we have to fake that;
# append the size as a 32-bit littleendian number as gzip does.
size_append = printf $(shell						\
dec_size=0;								\
for F in $1; do								\
	fsize=$$(stat -c "%s" $$F);					\
	dec_size=$$(expr $$dec_size + $$fsize);				\
done;									\
printf "%08x\n" $$dec_size |						\
	sed 's/\(..\)/\1 /g' | {					\
		read ch0 ch1 ch2 ch3;					\
		for ch in $$ch3 $$ch2 $$ch1 $$ch0; do			\
			printf '%s%03o' '\\' $$((0x$$ch)); 		\
		done;							\
	}								\
)

quiet_cmd_bzip2 = BZIP2   $@
cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

# Lzma
# ---------------------------------------------------------------------------

quiet_cmd_lzma = LZMA    $@
cmd_lzma = (cat $(filter-out FORCE,$^) | \
	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

quiet_cmd_lzo = LZO    $@
cmd_lzo = (cat $(filter-out FORCE,$^) | \
	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

# misc stuff
# ---------------------------------------------------------------------------
quote:="
Commit	Line	Data
f77bf014 SR	1	# Backward compatibility
	2	asflags-y += $(EXTRA_AFLAGS)
	3	ccflags-y += $(EXTRA_CFLAGS)
	4	cppflags-y += $(EXTRA_CPPFLAGS)
	5	ldflags-y += $(EXTRA_LDFLAGS)
	6
720097d8 SR	7	#
	8	# flags that take effect in sub directories
	9	export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
	10	export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
	11
1da177e4 LT	12	# Figure out what we need to build from the various variables
	13	# ===========================================================================
	14
	15	# When an object is listed to be built compiled-in and modular,
	16	# only build the compiled-in version
	17
	18	obj-m := $(filter-out $(obj-y),$(obj-m))
	19
	20	# Libraries are always collected in one lib file.
	21	# Filter out objects already built-in
	22
	23	lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
	24
	25
	26	# Handle objects in subdirs
	27	# ---------------------------------------------------------------------------
	28	# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
	29	# and add the directory to the list of dirs to descend into: $(subdir-y)
	30	# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
	31	# and add the directory to the list of dirs to descend into: $(subdir-m)
	32
551559e1 TH	33	# Determine modorder.
	34	# Unfortunately, we don't have information about ordering between -y
	35	# and -m subdirs. Just put -y's first.
	36	modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
	37
1da177e4 LT	38	__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
	39	subdir-y += $(__subdir-y)
	40	__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
	41	subdir-m += $(__subdir-m)
	42	obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
	43	obj-m := $(filter-out %/, $(obj-m))
	44
	45	# Subdirectories we need to descend into
	46
	47	subdir-ym := $(sort $(subdir-y) $(subdir-m))
	48
	49	# if $(foo-objs) exists, foo.o is a composite object
	50	multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	51	multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	52	multi-used := $(multi-used-y) $(multi-used-m)
	53	single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
	54
	55	# Build list of the parts of our composite objects, our composite
	56	# objects depend on those (obviously)
	57	multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
	58	multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
	59	multi-objs := $(multi-objs-y) $(multi-objs-m)
	60
f5fb9765 SR	61	# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
	62	# tell kbuild to descend
	63	subdir-obj-y := $(filter %/built-in.o, $(obj-y))
1da177e4 LT	64
	65	# $(obj-dirs) is a list of directories that contain object files
	66	obj-dirs := $(dir $(multi-objs) $(subdir-obj-y))
	67
	68	# Replace multi-part objects by their individual parts, look at local dir only
	69	real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
	70	real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
	71
	72	# Add subdir path
	73
	74	extra-y := $(addprefix $(obj)/,$(extra-y))
	75	always := $(addprefix $(obj)/,$(always))
	76	targets := $(addprefix $(obj)/,$(targets))
551559e1	77	modorder := $(addprefix $(obj)/,$(modorder))
1da177e4 LT	78	obj-y := $(addprefix $(obj)/,$(obj-y))
	79	obj-m := $(addprefix $(obj)/,$(obj-m))
	80	lib-y := $(addprefix $(obj)/,$(lib-y))
	81	subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
	82	real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
	83	real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
	84	single-used-m := $(addprefix $(obj)/,$(single-used-m))
	85	multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
	86	multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
	87	multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
	88	multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
	89	subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
	90	obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
	91
1da177e4 LT	92	# These flags are needed for modversions and compiling, so we define them here
	93	# already
	94	# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
	95	# end up in (or would, if it gets compiled in)
	96	# Note: It's possible that one object gets potentially linked into more
	97	# than one module. In that case KBUILD_MODNAME will be set to foo_bar,
	98	# where foo and bar are the name of the modules.
f83b5e32	99	name-fix = $(subst $(comma),_,$(subst -,_,$1))
5e8d780d	100	basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
f83b5e32 UR	101	modname_flags = $(if $(filter 1,$(words $(modname))),\
f83b5e32 UR	102	-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
1da177e4	103
346e15be	104	#hash values
e9d376f0	105	ifdef CONFIG_DYNAMIC_DEBUG
346e15be JB	106	debug_flags = -D"DEBUG_HASH=$(shell ./scripts/basic/hash djb2 $(@D)$(modname))"\
	107	-D"DEBUG_HASH2=$(shell ./scripts/basic/hash r5 $(@D)$(modname))"
	108	else
	109	debug_flags =
	110	endif
	111
720097d8	112	orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
d8672b40	113	$(ccflags-y) $(CFLAGS_$(basetarget).o)
656ee82c	114	_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
720097d8	115	_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
d8672b40	116	$(asflags-y) $(AFLAGS_$(basetarget).o)
f77bf014	117	_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
1da177e4	118
2521f2c2 PO	119	#
	120	# Enable gcov profiling flags for a file, directory or for all files depending
	121	# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
	122	# (in this order)
	123	#
	124	ifeq ($(CONFIG_GCOV_KERNEL),y)
	125	_c_flags += $(if $(patsubst n%,, \
	126	$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
	127	$(CFLAGS_GCOV))
	128	endif
	129
9e1b9b80 AJ	130	ifdef CONFIG_SYMBOL_PREFIX
	131	_cpp_flags += -DSYMBOL_PREFIX=$(patsubst "%",%,$(CONFIG_SYMBOL_PREFIX))
	132	endif
	133
	134
1da177e4 LT	135	# If building the kernel in a separate objtree expand all occurrences
	136	# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
	137
	138	ifeq ($(KBUILD_SRC),)
	139	__c_flags = $(_c_flags)
	140	__a_flags = $(_a_flags)
	141	__cpp_flags = $(_cpp_flags)
	142	else
	143
1da177e4 LT	144	# -I$(obj) locates generated .h files
	145	# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
	146	# and locates generated .h files
	147	# FIXME: Replace both with specific CFLAGS* statements in the makefiles
	148	__c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags)
	149	__a_flags = $(call flags,_a_flags)
	150	__cpp_flags = $(call flags,_cpp_flags)
	151	endif
	152
d8672b40 SR	153	c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
d8672b40 SR	154	$(__c_flags) $(modkern_cflags) \
346e15be JB	155	-D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) \
346e15be JB	156	$(debug_flags)
1da177e4	157
d8672b40	158	a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
1da177e4 LT	159	$(__a_flags) $(modkern_aflags)
1da177e4 LT	160
d8672b40 SR	161	cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
d8672b40 SR	162	$(__cpp_flags)
1da177e4	163
f77bf014	164	ld_flags = $(LDFLAGS) $(ldflags-y)
1da177e4 LT	165
	166	# Finds the multi-part object the current object will be linked into
	167	modname-multi = $(sort $(foreach m,$(multi-used),\
	168	$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
	169
	170	# Shipped files
	171	# ===========================================================================
	172
	173	quiet_cmd_shipped = SHIPPED $@
	174	cmd_shipped = cat $< > $@
	175
	176	$(obj)/%:: $(src)/%_shipped
	177	$(call cmd,shipped)
	178
	179	# Commands useful for building a boot image
	180	# ===========================================================================
	181	#
	182	# Use as following:
	183	#
	184	# target: source(s) FORCE
	185	# $(if_changed,ld/objcopy/gzip)
	186	#
836caba7	187	# and add target to extra-y so that we know we have to
1da177e4 LT	188	# read in the saved command line
	189
	190	# Linking
	191	# ---------------------------------------------------------------------------
	192
	193	quiet_cmd_ld = LD $@
f77bf014	194	cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
1da177e4 LT	195	$(filter-out FORCE,$^) -o $@
	196
	197	# Objcopy
	198	# ---------------------------------------------------------------------------
	199
	200	quiet_cmd_objcopy = OBJCOPY $@
	201	cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
	202
	203	# Gzip
	204	# ---------------------------------------------------------------------------
	205
	206	quiet_cmd_gzip = GZIP $@
d3dd3b5a PA	207	cmd_gzip = (cat $(filter-out FORCE,$^) \| gzip -f -9 > $@) \|\| \
d3dd3b5a PA	208	(rm -f $@ ; false)
1da177e4	209
1da177e4	210
bc22c17e AK	211	# Bzip2
	212	# ---------------------------------------------------------------------------
	213
d3dd3b5a PA	214	# Bzip2 and LZMA do not include size in file... so we have to fake that;
d3dd3b5a PA	215	# append the size as a 32-bit littleendian number as gzip does.
4a2ff67c	216	size_append = printf $(shell \
d3dd3b5a PA	217	dec_size=0; \
	218	for F in $1; do \
	219	fsize=$$(stat -c "%s" $$F); \
	220	dec_size=$$(expr $$dec_size + $$fsize); \
	221	done; \
1373411a JN	222	printf "%08x\n" $$dec_size \| \
	223	sed 's/\(..\)/\1 /g' \| { \
	224	read ch0 ch1 ch2 ch3; \
	225	for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
	226	printf '%s%03o' '\\' $$((0x$$ch)); \
	227	done; \
	228	} \
d3dd3b5a PA	229	)
	230
	231	quiet_cmd_bzip2 = BZIP2 $@
	232	cmd_bzip2 = (cat $(filter-out FORCE,$^) \| \
	233	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	234	(rm -f $@ ; false)
bc22c17e AK	235
	236	# Lzma
	237	# ---------------------------------------------------------------------------
	238
	239	quiet_cmd_lzma = LZMA $@
d3dd3b5a PA	240	cmd_lzma = (cat $(filter-out FORCE,$^) \| \
	241	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	242	(rm -f $@ ; false)
7dd65feb AT	243
	244	quiet_cmd_lzo = LZO $@
	245	cmd_lzo = (cat $(filter-out FORCE,$^) \| \
	246	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	247	(rm -f $@ ; false)
d61931d8 BP	248
	249	# misc stuff
	250	# ---------------------------------------------------------------------------
	251	quote:="