| # SPDX-License-Identifier: GPL-2.0 |
| |
| # Finds the multi-part object the current object will be linked into. |
| # If the object belongs to two or more multi-part objects, list them all. |
| modname-multi = $(sort $(foreach m,$(multi-obj-ym),\ |
| $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) |
| |
| __modname = $(or $(modname-multi),$(basetarget)) |
| |
| modname = $(subst $(space),:,$(__modname)) |
| modfile = $(addprefix $(obj)/,$(__modname)) |
| |
| # target with $(obj)/ and its suffix stripped |
| target-stem = $(basename $(patsubst $(obj)/%,%,$@)) |
| |
| # These flags are needed for modversions and compiling, so we define them here |
| # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
| # end up in (or would, if it gets compiled in) |
| name-fix-token = $(subst $(comma),_,$(subst -,_,$1)) |
| name-fix = $(call stringify,$(call name-fix-token,$1)) |
| basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
| modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ |
| -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) |
| modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
| |
| _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
| $(filter-out $(ccflags-remove-y), \ |
| $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ |
| $(CFLAGS_$(target-stem).o)) |
| _rust_flags = $(filter-out $(RUSTFLAGS_REMOVE_$(target-stem).o), \ |
| $(filter-out $(rustflags-remove-y), \ |
| $(KBUILD_RUSTFLAGS) $(rustflags-y)) \ |
| $(RUSTFLAGS_$(target-stem).o)) |
| _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ |
| $(filter-out $(asflags-remove-y), \ |
| $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ |
| $(AFLAGS_$(target-stem).o)) |
| _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
| |
| # |
| # 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%,, \ |
| $(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(if $(is-kernel-object),$(CONFIG_GCOV_PROFILE_ALL))), \ |
| $(CFLAGS_GCOV)) |
| endif |
| |
| # |
| # Enable address sanitizer flags for kernel except some files or directories |
| # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) |
| # |
| ifeq ($(CONFIG_KASAN),y) |
| ifneq ($(CONFIG_KASAN_HW_TAGS),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)$(is-kernel-object)), \ |
| $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
| _rust_flags += $(if $(patsubst n%,, \ |
| $(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)$(is-kernel-object)), \ |
| $(RUSTFLAGS_KASAN)) |
| endif |
| endif |
| |
| ifeq ($(CONFIG_KMSAN),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)$(is-kernel-object)), \ |
| $(CFLAGS_KMSAN)) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)$(is-kernel-object)), \ |
| , -mllvm -msan-disable-checks=1) |
| endif |
| |
| ifeq ($(CONFIG_UBSAN),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)$(is-kernel-object)), \ |
| $(CFLAGS_UBSAN)) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(UBSAN_INTEGER_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_INTEGER_WRAP)$(UBSAN_SANITIZE)$(is-kernel-object)), \ |
| $(CFLAGS_UBSAN_INTEGER_WRAP)) |
| endif |
| |
| ifeq ($(CONFIG_KCOV),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(if $(is-kernel-object),$(CONFIG_KCOV_INSTRUMENT_ALL))), \ |
| $(CFLAGS_KCOV)) |
| _rust_flags += $(if $(patsubst n%,, \ |
| $(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(if $(is-kernel-object),$(CONFIG_KCOV_INSTRUMENT_ALL))), \ |
| $(RUSTFLAGS_KCOV)) |
| endif |
| |
| # |
| # Enable KCSAN flags except some files or directories we don't want to check |
| # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) |
| # |
| ifeq ($(CONFIG_KCSAN),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)$(is-kernel-object)), \ |
| $(CFLAGS_KCSAN)) |
| # Some uninstrumented files provide implied barriers required to avoid false |
| # positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only. |
| _c_flags += $(if $(patsubst n%,, \ |
| $(KCSAN_INSTRUMENT_BARRIERS_$(target-stem).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \ |
| -D__KCSAN_INSTRUMENT_BARRIERS__) |
| endif |
| |
| # |
| # Enable AutoFDO build flags except some files or directories we don't want to |
| # enable (depends on variables AUTOFDO_PROFILE_obj.o and AUTOFDO_PROFILE). |
| # |
| ifeq ($(CONFIG_AUTOFDO_CLANG),y) |
| _c_flags += $(if $(patsubst n%,, \ |
| $(AUTOFDO_PROFILE_$(target-stem).o)$(AUTOFDO_PROFILE)$(is-kernel-object)), \ |
| $(CFLAGS_AUTOFDO_CLANG)) |
| endif |
| |
| # |
| # Enable Propeller build flags except some files or directories we don't want to |
| # enable (depends on variables AUTOFDO_PROPELLER_obj.o and PROPELLER_PROFILE). |
| # |
| ifdef CONFIG_PROPELLER_CLANG |
| _c_flags += $(if $(patsubst n%,, \ |
| $(AUTOFDO_PROFILE_$(target-stem).o)$(AUTOFDO_PROFILE)$(PROPELLER_PROFILE))$(is-kernel-object), \ |
| $(CFLAGS_PROPELLER_CLANG)) |
| endif |
| |
| # $(src) for including checkin headers from generated source files |
| # $(obj) for including generated headers from checkin source files |
| ifdef building_out_of_srctree |
| _c_flags += $(addprefix -I, $(src) $(obj)) |
| _a_flags += $(addprefix -I, $(src) $(obj)) |
| _cpp_flags += $(addprefix -I, $(src) $(obj)) |
| endif |
| |
| # If $(is-kernel-object) is 'y', this object will be linked to vmlinux or modules |
| is-kernel-object = $(or $(part-of-builtin),$(part-of-module)) |
| |
| part-of-builtin = $(if $(filter $(basename $@).o, $(real-obj-y) $(lib-y)),y) |
| part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
| quiet_modtag = $(if $(part-of-module),[M], ) |
| |
| modkern_cflags = \ |
| $(if $(part-of-module), \ |
| $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ |
| $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
| |
| modkern_rustflags = \ |
| $(if $(part-of-module), \ |
| $(KBUILD_RUSTFLAGS_MODULE) $(RUSTFLAGS_MODULE), \ |
| $(KBUILD_RUSTFLAGS_KERNEL) $(RUSTFLAGS_KERNEL)) |
| |
| modkern_aflags = $(if $(part-of-module), \ |
| $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ |
| $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL) $(modfile_flags)) |
| |
| c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| -include $(srctree)/include/linux/compiler_types.h \ |
| $(_c_flags) $(modkern_cflags) \ |
| $(basename_flags) $(modname_flags) |
| |
| rust_flags = $(_rust_flags) $(modkern_rustflags) @$(objtree)/include/generated/rustc_cfg |
| |
| a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| $(_a_flags) $(modkern_aflags) $(modname_flags) |
| |
| cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| $(_cpp_flags) |
| |
| ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
| |
| ifdef CONFIG_OBJTOOL |
| |
| objtool := $(objtree)/tools/objtool/objtool |
| |
| objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label |
| objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr |
| objtool-args-$(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) += --hacks=skylake |
| objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt |
| objtool-args-$(CONFIG_FINEIBT) += --cfi |
| objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount |
| ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL |
| objtool-args-$(CONFIG_HAVE_OBJTOOL_NOP_MCOUNT) += --mnop |
| endif |
| objtool-args-$(CONFIG_UNWINDER_ORC) += --orc |
| objtool-args-$(CONFIG_MITIGATION_RETPOLINE) += --retpoline |
| objtool-args-$(CONFIG_MITIGATION_RETHUNK) += --rethunk |
| objtool-args-$(CONFIG_MITIGATION_SLS) += --sls |
| objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval |
| objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call |
| objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess |
| objtool-args-$(or $(CONFIG_GCOV_KERNEL),$(CONFIG_KCOV)) += --no-unreachable |
| objtool-args-$(CONFIG_PREFIX_SYMBOLS) += --prefix=$(CONFIG_FUNCTION_PADDING_BYTES) |
| objtool-args-$(CONFIG_OBJTOOL_WERROR) += --Werror |
| |
| objtool-args = $(objtool-args-y) \ |
| $(if $(delay-objtool), --link) \ |
| $(if $(part-of-module), --module) |
| |
| delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT)) |
| |
| cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@) |
| cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) |
| |
| objtool-enabled := y |
| |
| endif # CONFIG_OBJTOOL |
| |
| # Useful for describing the dependency of composite objects |
| # Usage: |
| # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) |
| define multi_depend |
| $(foreach m, $1, \ |
| $(eval $m: \ |
| $(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3)))) |
| endef |
| |
| # Remove ".." and "." from a path, without using "realpath" |
| # Usage: |
| # $(call normalize_path,path/to/../file) |
| define normalize_path |
| $(strip $(eval elements :=) \ |
| $(foreach elem,$(subst /, ,$1), \ |
| $(if $(filter-out .,$(elem)), \ |
| $(if $(filter ..,$(elem)), \ |
| $(eval elements := $(wordlist 2,$(words $(elements)),x $(elements))), \ |
| $(eval elements := $(elements) $(elem))))) \ |
| $(subst $(space),/,$(elements))) |
| endef |
| |
| # Build commands |
| # =========================================================================== |
| # These are shared by some Makefile.* files. |
| |
| ifdef CONFIG_LTO_CLANG |
| # Run $(LD) here to convert LLVM IR to ELF in the following cases: |
| # - when this object needs objtool processing, as objtool cannot process LLVM IR |
| # - when this is a single-object module, as modpost cannot process LLVM IR |
| cmd_ld_single = $(if $(objtool-enabled)$(is-single-obj-m), ; $(LD) $(ld_flags) -r -o $(tmp-target) $@; mv $(tmp-target) $@) |
| endif |
| |
| quiet_cmd_cc_o_c = CC $(quiet_modtag) $@ |
| cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< \ |
| $(cmd_ld_single) \ |
| $(cmd_objtool) |
| |
| define rule_cc_o_c |
| $(call cmd_and_fixdep,cc_o_c) |
| $(call cmd,checksrc) |
| $(call cmd,checkdoc) |
| $(call cmd,gen_objtooldep) |
| $(call cmd,gen_symversions_c) |
| $(call cmd,record_mcount) |
| $(call cmd,warn_shared_object) |
| endef |
| |
| quiet_cmd_as_o_S = AS $(quiet_modtag) $@ |
| cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool) |
| |
| define rule_as_o_S |
| $(call cmd_and_fixdep,as_o_S) |
| $(call cmd,gen_objtooldep) |
| $(call cmd,gen_symversions_S) |
| $(call cmd,warn_shared_object) |
| endef |
| |
| # Copy a file |
| # =========================================================================== |
| # 'cp' preserves permissions. If you use it to copy a file in read-only srctree, |
| # the copy would be read-only as well, leading to an error when executing the |
| # rule next time. Use 'cat' instead in order to generate a writable file. |
| quiet_cmd_copy = COPY $@ |
| cmd_copy = cat $< > $@ |
| |
| $(obj)/%: $(src)/%_shipped |
| $(call cmd,copy) |
| |
| # Touch a file |
| # =========================================================================== |
| quiet_cmd_touch = TOUCH $(call normalize_path,$@) |
| cmd_touch = touch $@ |
| |
| # Commands useful for building a boot image |
| # =========================================================================== |
| # |
| # Use as following: |
| # |
| # target: source(s) FORCE |
| # $(if_changed,ld/objcopy/gzip) |
| # |
| # and add target to 'targets' so that we know we have to |
| # read in the saved command line |
| |
| # Linking |
| # --------------------------------------------------------------------------- |
| |
| quiet_cmd_ld = LD $@ |
| cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
| |
| # Archive |
| # --------------------------------------------------------------------------- |
| |
| quiet_cmd_ar = AR $@ |
| cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
| |
| # Objcopy |
| # --------------------------------------------------------------------------- |
| |
| quiet_cmd_objcopy = OBJCOPY $@ |
| cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ |
| |
| # Gzip |
| # --------------------------------------------------------------------------- |
| |
| quiet_cmd_gzip = GZIP $@ |
| cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
| |
| # 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 $(real-prereqs); do \ |
| fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
| dec_size=$$(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_file_size = GEN $@ |
| cmd_file_size = $(size_append) > $@ |
| |
| quiet_cmd_bzip2 = BZIP2 $@ |
| cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@ |
| |
| quiet_cmd_bzip2_with_size = BZIP2 $@ |
| cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ |
| |
| # Lzma |
| # --------------------------------------------------------------------------- |
| |
| quiet_cmd_lzma = LZMA $@ |
| cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@ |
| |
| quiet_cmd_lzma_with_size = LZMA $@ |
| cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ |
| |
| quiet_cmd_lzo = LZO $@ |
| cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@ |
| |
| quiet_cmd_lzo_with_size = LZO $@ |
| cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ |
| |
| quiet_cmd_lz4 = LZ4 $@ |
| cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -9 - - > $@ |
| |
| quiet_cmd_lz4_with_size = LZ4 $@ |
| cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -9 - -; \ |
| $(size_append); } > $@ |
| |
| # 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 ?= $(or $(2),none) |
| UIMAGE_OPTS-y ?= |
| UIMAGE_TYPE ?= kernel |
| UIMAGE_LOADADDR ?= arch_must_set_this |
| UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) |
| UIMAGE_NAME ?= Linux-$(KERNELRELEASE) |
| |
| quiet_cmd_uimage = UIMAGE $@ |
| cmd_uimage = $(BASH) $(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 $< $@ |
| |
| # Flat Image Tree (FIT) |
| # This allows for packaging of a kernel and all devicetrees files, using |
| # compression. |
| # --------------------------------------------------------------------------- |
| |
| MAKE_FIT := $(srctree)/scripts/make_fit.py |
| |
| # Use this to override the compression algorithm |
| FIT_COMPRESSION ?= gzip |
| |
| quiet_cmd_fit = FIT $@ |
| cmd_fit = $(MAKE_FIT) -o $@ --arch $(UIMAGE_ARCH) --os linux \ |
| --name '$(UIMAGE_NAME)' \ |
| $(if $(findstring 1,$(KBUILD_VERBOSE)),-v) \ |
| $(if $(FIT_DECOMPOSE_DTBS),--decompose-dtbs) \ |
| --compress $(FIT_COMPRESSION) -k $< @$(word 2,$^) |
| |
| # XZ |
| # --------------------------------------------------------------------------- |
| # Use xzkern or xzkern_with_size 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_with_size 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 $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@ |
| |
| quiet_cmd_xzkern_with_size = XZKERN $@ |
| cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ |
| $(size_append); } > $@ |
| |
| quiet_cmd_xzmisc = XZMISC $@ |
| cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
| |
| # ZSTD |
| # --------------------------------------------------------------------------- |
| # Appends the uncompressed size of the data using size_append. The .zst |
| # format has the size information available at the beginning of the file too, |
| # but it's in a 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 zstd tool think that |
| # the file is corrupt. This is expected. |
| # |
| # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of |
| # 128 MB. zstd22 is used for kernel compression because it is decompressed in a |
| # single pass, so zstd doesn't need to allocate a window buffer. When streaming |
| # decompression is used, like initramfs decompression, zstd22 should likely not |
| # be used because it would require zstd to allocate a 128 MB buffer. |
| |
| quiet_cmd_zstd = ZSTD $@ |
| cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ |
| |
| quiet_cmd_zstd22 = ZSTD22 $@ |
| cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@ |
| |
| quiet_cmd_zstd22_with_size = ZSTD22 $@ |
| cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ |
| |
| # ASM offsets |
| # --------------------------------------------------------------------------- |
| |
| # Default sed regexp - multiline due to syntax constraints |
| # |
| # Use [:space:] because LLVM's integrated assembler inserts <tab> around |
| # the .ascii directive whereas GCC keeps the <space> as-is. |
| define sed-offsets |
| 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
| /^->/{s:->#\(.*\):/* \1 */:; \ |
| s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
| s:->::; p;}' |
| endef |
| |
| # Use filechk to avoid rebuilds when a header changes, but the resulting file |
| # does not |
| define filechk_offsets |
| echo "#ifndef $2"; \ |
| echo "#define $2"; \ |
| echo "/*"; \ |
| echo " * DO NOT MODIFY."; \ |
| echo " *"; \ |
| echo " * This file was generated by Kbuild"; \ |
| echo " */"; \ |
| echo ""; \ |
| sed -ne $(sed-offsets) < $<; \ |
| echo ""; \ |
| echo "#endif" |
| endef |
