[GitHub/mt8127/android_kernel_alcatel_ttab.git] / scripts / Makefile.lib

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

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

# 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 = gzip -f -9 < $< > $@
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
1da177e4 LT	7	# Figure out what we need to build from the various variables
	8	# ===========================================================================
	9
	10	# When an object is listed to be built compiled-in and modular,
	11	# only build the compiled-in version
	12
	13	obj-m := $(filter-out $(obj-y),$(obj-m))
	14
	15	# Libraries are always collected in one lib file.
	16	# Filter out objects already built-in
	17
	18	lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
	19
	20
	21	# Handle objects in subdirs
	22	# ---------------------------------------------------------------------------
	23	# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
	24	# and add the directory to the list of dirs to descend into: $(subdir-y)
	25	# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
	26	# and add the directory to the list of dirs to descend into: $(subdir-m)
	27
551559e1 TH	28	# Determine modorder.
	29	# Unfortunately, we don't have information about ordering between -y
	30	# and -m subdirs. Just put -y's first.
	31	modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
	32
1da177e4 LT	33	__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
	34	subdir-y += $(__subdir-y)
	35	__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
	36	subdir-m += $(__subdir-m)
	37	obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
	38	obj-m := $(filter-out %/, $(obj-m))
	39
	40	# Subdirectories we need to descend into
	41
	42	subdir-ym := $(sort $(subdir-y) $(subdir-m))
	43
	44	# if $(foo-objs) exists, foo.o is a composite object
	45	multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	46	multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	47	multi-used := $(multi-used-y) $(multi-used-m)
	48	single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
	49
	50	# Build list of the parts of our composite objects, our composite
	51	# objects depend on those (obviously)
	52	multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
	53	multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
	54	multi-objs := $(multi-objs-y) $(multi-objs-m)
	55
f5fb9765 SR	56	# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
	57	# tell kbuild to descend
	58	subdir-obj-y := $(filter %/built-in.o, $(obj-y))
1da177e4 LT	59
	60	# $(obj-dirs) is a list of directories that contain object files
	61	obj-dirs := $(dir $(multi-objs) $(subdir-obj-y))
	62
	63	# Replace multi-part objects by their individual parts, look at local dir only
	64	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)
	65	real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
	66
	67	# Add subdir path
	68
	69	extra-y := $(addprefix $(obj)/,$(extra-y))
	70	always := $(addprefix $(obj)/,$(always))
	71	targets := $(addprefix $(obj)/,$(targets))
551559e1	72	modorder := $(addprefix $(obj)/,$(modorder))
1da177e4 LT	73	obj-y := $(addprefix $(obj)/,$(obj-y))
	74	obj-m := $(addprefix $(obj)/,$(obj-m))
	75	lib-y := $(addprefix $(obj)/,$(lib-y))
	76	subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
	77	real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
	78	real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
	79	single-used-m := $(addprefix $(obj)/,$(single-used-m))
	80	multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
	81	multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
	82	multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
	83	multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
	84	subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
	85	obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
	86
1da177e4 LT	87	# These flags are needed for modversions and compiling, so we define them here
	88	# already
	89	# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
	90	# end up in (or would, if it gets compiled in)
	91	# Note: It's possible that one object gets potentially linked into more
	92	# than one module. In that case KBUILD_MODNAME will be set to foo_bar,
	93	# where foo and bar are the name of the modules.
f83b5e32	94	name-fix = $(subst $(comma),_,$(subst -,_,$1))
5e8d780d	95	basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
f83b5e32 UR	96	modname_flags = $(if $(filter 1,$(words $(modname))),\
f83b5e32 UR	97	-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
1da177e4	98
346e15be JB	99	#hash values
	100	ifdef CONFIG_DYNAMIC_PRINTK_DEBUG
	101	debug_flags = -D"DEBUG_HASH=$(shell ./scripts/basic/hash djb2 $(@D)$(modname))"\
	102	-D"DEBUG_HASH2=$(shell ./scripts/basic/hash r5 $(@D)$(modname))"
	103	else
	104	debug_flags =
	105	endif
	106
d8672b40 SR	107	orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
d8672b40 SR	108	$(ccflags-y) $(CFLAGS_$(basetarget).o)
656ee82c	109	_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
d8672b40 SR	110	_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
d8672b40 SR	111	$(asflags-y) $(AFLAGS_$(basetarget).o)
f77bf014	112	_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
1da177e4 LT	113
	114	# If building the kernel in a separate objtree expand all occurrences
	115	# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
	116
	117	ifeq ($(KBUILD_SRC),)
	118	__c_flags = $(_c_flags)
	119	__a_flags = $(_a_flags)
	120	__cpp_flags = $(_cpp_flags)
	121	else
	122
1da177e4 LT	123	# -I$(obj) locates generated .h files
	124	# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
	125	# and locates generated .h files
	126	# FIXME: Replace both with specific CFLAGS* statements in the makefiles
	127	__c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags)
	128	__a_flags = $(call flags,_a_flags)
	129	__cpp_flags = $(call flags,_cpp_flags)
	130	endif
	131
d8672b40 SR	132	c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
d8672b40 SR	133	$(__c_flags) $(modkern_cflags) \
346e15be JB	134	-D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) \
346e15be JB	135	$(debug_flags)
1da177e4	136
d8672b40	137	a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
1da177e4 LT	138	$(__a_flags) $(modkern_aflags)
1da177e4 LT	139
d8672b40 SR	140	cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
d8672b40 SR	141	$(__cpp_flags)
1da177e4	142
f77bf014	143	ld_flags = $(LDFLAGS) $(ldflags-y)
1da177e4 LT	144
	145	# Finds the multi-part object the current object will be linked into
	146	modname-multi = $(sort $(foreach m,$(multi-used),\
	147	$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
	148
	149	# Shipped files
	150	# ===========================================================================
	151
	152	quiet_cmd_shipped = SHIPPED $@
	153	cmd_shipped = cat $< > $@
	154
	155	$(obj)/%:: $(src)/%_shipped
	156	$(call cmd,shipped)
	157
	158	# Commands useful for building a boot image
	159	# ===========================================================================
	160	#
	161	# Use as following:
	162	#
	163	# target: source(s) FORCE
	164	# $(if_changed,ld/objcopy/gzip)
	165	#
836caba7	166	# and add target to extra-y so that we know we have to
1da177e4 LT	167	# read in the saved command line
	168
	169	# Linking
	170	# ---------------------------------------------------------------------------
	171
	172	quiet_cmd_ld = LD $@
f77bf014	173	cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
1da177e4 LT	174	$(filter-out FORCE,$^) -o $@
	175
	176	# Objcopy
	177	# ---------------------------------------------------------------------------
	178
	179	quiet_cmd_objcopy = OBJCOPY $@
	180	cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
	181
	182	# Gzip
	183	# ---------------------------------------------------------------------------
	184
	185	quiet_cmd_gzip = GZIP $@
	186	cmd_gzip = gzip -f -9 < $< > $@
	187
1da177e4	188