--- /dev/null
+# 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) $(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)), \
+ $(CFLAGS_GCOV))
+endif
+
+# If building the kernel in a separate objtree expand all occurrences
+# of -Idir to -I$(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 = $(call flags,_cpp_flags)
+endif
+
+# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
+c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
+ $(__c_flags) $(modkern_cflags) \
+ -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
+
+a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
+ $(__a_flags) $(modkern_aflags)
+
+cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
+ $(__cpp_flags)
+
+ld_flags = $(LDFLAGS) $(ldflags-y)
+
+# Modified for U-Boot
+dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
+ -I$(srctree)/arch/$(ARCH)/dts \
+ -undef -D__DTS__
+
+# 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 $@
+# Modified for U-Boot
+cmd_dt_S_dtb= \
+( \
+ echo '.section .dtb.init.rodata,"a"'; \
+ echo '.global __dtb_$(*F)_begin'; \
+ echo '__dtb_$(*F)_begin:'; \
+ echo '.incbin "$<" '; \
+ echo '__dtb_$(*F)_end:'; \
+ echo '.global __dtb_$(*F)_end'; \
+) > $@
+
+$(obj)/%.dtb.S: $(obj)/%.dtb
+ $(call cmd,dt_S_dtb)
+
+quiet_cmd_dtc = DTC $@
+# Modified for U-Boot
+cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+ dtc -O dtb -o $@ -b 0 \
+ -i $(dir $<) $(DTC_FLAGS) \
+ -d $(depfile).dtc.tmp $(dtc-tmp) ; \
+ cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+
+$(obj)/%.dtb: $(src)/%.dts FORCE
+ $(call if_changed_dep,dtc)
+
+dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
+
+# Helper targets for Installing DTBs into the boot directory
+quiet_cmd_dtb_install = INSTALL $<
+ cmd_dtb_install = cp $< $(2)
+
+_dtbinst_pre_:
+ $(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
+ $(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
+ $(Q)mkdir -p $(INSTALL_DTBS_PATH)
+
+%.dtb_dtbinst_: $(obj)/%.dtb _dtbinst_pre_
+ $(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
+
+# 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)
+
+quiet_cmd_lz4 = LZ4 $@
+cmd_lz4 = (cat $(filter-out FORCE,$^) | \
+ lz4c -l -c1 stdin stdout && $(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)
Code Review / kvmfornfv.git / blobdiff