90b335fbbc
All architectures that use cmd_dtc do so in almost the same way. Create a central build rule to avoid duplication. The one difference is that most current uses of dtc build $(obj)/%.dtb from $(src)/dts/%.dts rather than building the .dtb in the same directory as the .dts file. This difference will be eliminated arch-by-arch in future patches. MIPS is the exception here; it already uses the exact same rule as the new common rule, so the duplicate is removed in this patch to avoid any conflict. arch/mips changes courtesy of Ralf Baechle. Update Documentation/kbuild to remove the explicit call to cmd_dtc from the example, now that the rule exists in a centralized location. Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-arm-kernel@lists.infradead.org Cc: Olof Johansson <olof@lixom.net> Cc: Russell King <linux@arm.linux.org.uk> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: linux@lists.openrisc.net Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: linux-c6x-dev@linux-c6x.org Cc: Mark Salter <msalter@redhat.com> Cc: Michal Simek <monstr@monstr.eu> Cc: microblaze-uclinux@itee.uq.edu.au Cc: Chris Zankel <chris@zankel.net> Cc: linux-xtensa@linux-xtensa.org Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
364 lines
13 KiB
Makefile
364 lines
13 KiB
Makefile
# 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: Files that end up in two or more modules are compiled without the
|
|
# KBUILD_MODNAME definition. The reason is that any made-up name would
|
|
# differ in different configs.
|
|
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)))")
|
|
|
|
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)), \
|
|
$(CFLAGS_GCOV))
|
|
endif
|
|
|
|
ifdef CONFIG_SYMBOL_PREFIX
|
|
_sym_flags = -DSYMBOL_PREFIX=$(patsubst "%",%,$(CONFIG_SYMBOL_PREFIX))
|
|
_cpp_flags += $(_sym_flags)
|
|
_a_flags += $(_sym_flags)
|
|
endif
|
|
|
|
|
|
# If building the kernel in a separate objtree expand all occurrences
|
|
# of -Idir to -I$(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) $(modname_flags)
|
|
|
|
a_flags = -Wp,-MD,$(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=))))
|
|
|
|
ifdef REGENERATE_PARSERS
|
|
|
|
# GPERF
|
|
# ---------------------------------------------------------------------------
|
|
quiet_cmd_gperf = GPERF $@
|
|
cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
|
|
|
|
.PRECIOUS: $(src)/%.hash.c_shipped
|
|
$(src)/%.hash.c_shipped: $(src)/%.gperf
|
|
$(call cmd,gperf)
|
|
|
|
# LEX
|
|
# ---------------------------------------------------------------------------
|
|
LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
|
|
|
|
quiet_cmd_flex = LEX $@
|
|
cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
|
|
|
|
.PRECIOUS: $(src)/%.lex.c_shipped
|
|
$(src)/%.lex.c_shipped: $(src)/%.l
|
|
$(call cmd,flex)
|
|
|
|
# YACC
|
|
# ---------------------------------------------------------------------------
|
|
YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
|
|
|
|
quiet_cmd_bison = YACC $@
|
|
cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
|
|
|
|
.PRECIOUS: $(src)/%.tab.c_shipped
|
|
$(src)/%.tab.c_shipped: $(src)/%.y
|
|
$(call cmd,bison)
|
|
|
|
quiet_cmd_bison_h = YACC $@
|
|
cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
|
|
|
|
.PRECIOUS: $(src)/%.tab.h_shipped
|
|
$(src)/%.tab.h_shipped: $(src)/%.y
|
|
$(call cmd,bison_h)
|
|
|
|
endif
|
|
|
|
# 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 -n -f -9 > $@) || \
|
|
(rm -f $@ ; false)
|
|
|
|
# DTC
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# Generate an assembly file to wrap the output of the device tree compiler
|
|
quiet_cmd_dt_S_dtb= DTB $@
|
|
cmd_dt_S_dtb= \
|
|
( \
|
|
echo '\#include <asm-generic/vmlinux.lds.h>'; \
|
|
echo '.section .dtb.init.rodata,"a"'; \
|
|
echo '.balign STRUCT_ALIGNMENT'; \
|
|
echo '.global __dtb_$(*F)_begin'; \
|
|
echo '__dtb_$(*F)_begin:'; \
|
|
echo '.incbin "$<" '; \
|
|
echo '__dtb_$(*F)_end:'; \
|
|
echo '.global __dtb_$(*F)_end'; \
|
|
echo '.balign STRUCT_ALIGNMENT'; \
|
|
) > $@
|
|
|
|
$(obj)/%.dtb.S: $(obj)/%.dtb
|
|
$(call cmd,dt_S_dtb)
|
|
|
|
quiet_cmd_dtc = DTC $@
|
|
cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
|
|
|
|
$(obj)/%.dtb: $(src)/%.dts FORCE
|
|
$(call if_changed_dep,dtc)
|
|
|
|
# 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)
|
|
|
|
# U-Boot mkimage
|
|
# ---------------------------------------------------------------------------
|
|
|
|
MKIMAGE := $(srctree)/scripts/mkuboot.sh
|
|
|
|
# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
|
|
# the number of overrides in arch makefiles
|
|
UIMAGE_ARCH ?= $(SRCARCH)
|
|
UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
|
|
UIMAGE_OPTS-y ?=
|
|
UIMAGE_TYPE ?= kernel
|
|
UIMAGE_LOADADDR ?= arch_must_set_this
|
|
UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
|
|
UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
|
|
UIMAGE_IN ?= $<
|
|
UIMAGE_OUT ?= $@
|
|
|
|
quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
|
|
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
|
|
-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
|
|
-T $(UIMAGE_TYPE) \
|
|
-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
|
|
-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
|
|
|
|
# XZ
|
|
# ---------------------------------------------------------------------------
|
|
# Use xzkern to compress the kernel image and xzmisc to compress other things.
|
|
#
|
|
# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
|
|
# of the kernel decompressor. A BCJ filter is used if it is available for
|
|
# the target architecture. xzkern also appends uncompressed size of the data
|
|
# using size_append. The .xz format has the size information available at
|
|
# the end of the file too, but it's in more complex format and it's good to
|
|
# avoid changing the part of the boot code that reads the uncompressed size.
|
|
# Note that the bytes added by size_append will make the xz tool think that
|
|
# the file is corrupt. This is expected.
|
|
#
|
|
# xzmisc doesn't use size_append, so it can be used to create normal .xz
|
|
# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
|
|
# big dictionary would increase the memory usage too much in the multi-call
|
|
# decompression mode. A BCJ filter isn't used either.
|
|
quiet_cmd_xzkern = XZKERN $@
|
|
cmd_xzkern = (cat $(filter-out FORCE,$^) | \
|
|
sh $(srctree)/scripts/xz_wrap.sh && \
|
|
$(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
|
(rm -f $@ ; false)
|
|
|
|
quiet_cmd_xzmisc = XZMISC $@
|
|
cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
|
|
xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
|
|
(rm -f $@ ; false)
|
|
|
|
# misc stuff
|
|
# ---------------------------------------------------------------------------
|
|
quote:="
|