TrxShell [ mangaberri.com ]

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atomic	[ DIR ]	drwxr-xr-x
basic	[ DIR ]	drwxr-xr-x
clang-tools	[ DIR ]	drwxr-xr-x
coccinelle	[ DIR ]	drwxr-xr-x
dtc	[ DIR ]	drwxr-xr-x
dummy-tools	[ DIR ]	drwxr-xr-x
gcc-plugins	[ DIR ]	drwxr-xr-x
gdb	[ DIR ]	drwxr-xr-x
genksyms	[ DIR ]	drwxr-xr-x
kconfig	[ DIR ]	drwxr-xr-x
ksymoops	[ DIR ]	drwxr-xr-x
mod	[ DIR ]	drwxr-xr-x
package	[ DIR ]	drwxr-xr-x
selinux	[ DIR ]	drwxr-xr-x
tracing	[ DIR ]	drwxr-xr-x
.gitignore	214 B	-rw-r--r--
Kbuild.include	10.1 KB	-rw-r--r--
Kconfig.include	2.65 KB	-rw-r--r--
Lindent	502 B	-rwxr-xr-x
Makefile	1.87 KB	-rw-r--r--
Makefile.asm-generic	1.82 KB	-rw-r--r--
Makefile.btf	638 B	-rw-r--r--
Makefile.build	17.2 KB	-rw-r--r--
Makefile.clang	1.61 KB	-rw-r--r--
Makefile.clean	1.87 KB	-rw-r--r--
Makefile.compiler	2.74 KB	-rw-r--r--
Makefile.debug	1.12 KB	-rw-r--r--
Makefile.defconf	1.04 KB	-rw-r--r--
Makefile.dtbinst	1.03 KB	-rw-r--r--
Makefile.extrawarn	7.9 KB	-rw-r--r--
Makefile.gcc-plugins	2.59 KB	-rw-r--r--
Makefile.headersinst	2.88 KB	-rw-r--r--
Makefile.host	5.91 KB	-rw-r--r--
Makefile.kasan	2.57 KB	-rw-r--r--
Makefile.kcov	333 B	-rw-r--r--
Makefile.kcsan	1004 B	-rw-r--r--
Makefile.kmsan	208 B	-rw-r--r--
Makefile.lib	21.1 KB	-rw-r--r--
Makefile.modfinal	2.63 KB	-rw-r--r--
Makefile.modinst	4.02 KB	-rw-r--r--
Makefile.modpost	4.69 KB	-rw-r--r--
Makefile.package	8.73 KB	-rw-r--r--
Makefile.randstruct	511 B	-rw-r--r--
Makefile.ubsan	779 B	-rw-r--r--
Makefile.userprogs	1.59 KB	-rw-r--r--
Makefile.vdsoinst	1.15 KB	-rw-r--r--
Makefile.vmlinux	1.48 KB	-rw-r--r--
Makefile.vmlinux_o	3.27 KB	-rw-r--r--
as-version.sh	2.03 KB	-rwxr-xr-x
asn1_compiler.c	35.32 KB	-rw-r--r--
bloat-o-meter	3.77 KB	-rwxr-xr-x
bootgraph.pl	5.64 KB	-rwxr-xr-x
bpf_doc.py	31.73 KB	-rwxr-xr-x
cc-can-link.sh	166 B	-rwxr-xr-x
cc-version.sh	1.36 KB	-rwxr-xr-x
check-git	298 B	-rwxr-xr-x
check-sysctl-docs	3.66 KB	-rwxr-xr-x
check-uapi.sh	15.05 KB	-rwxr-xr-x
check_extable.sh	4.93 KB	-rwxr-xr-x
checkdeclares.pl	1.1 KB	-rwxr-xr-x
checkincludes.pl	1.94 KB	-rwxr-xr-x
checkkconfigsymbols.py	15.75 KB	-rwxr-xr-x
checkpatch.pl	233.78 KB	-rwxr-xr-x
checkstack.pl	5.96 KB	-rwxr-xr-x
checksyscalls.sh	7.51 KB	-rwxr-xr-x
checkversion.pl	2.16 KB	-rwxr-xr-x
cleanfile	3.46 KB	-rwxr-xr-x
cleanpatch	5.06 KB	-rwxr-xr-x
coccicheck	7.9 KB	-rwxr-xr-x
config	4.78 KB	-rwxr-xr-x
const_structs.checkpatch	1.4 KB	-rw-r--r--
decode_stacktrace.sh	7.58 KB	-rwxr-xr-x
decodecode	4.86 KB	-rwxr-xr-x
depmod.sh	697 B	-rwxr-xr-x
dev-needs.sh	6.07 KB	-rwxr-xr-x
diffconfig	4.12 KB	-rwxr-xr-x
documentation-file-ref-check	5.67 KB	-rwxr-xr-x
export_report.pl	4.5 KB	-rwxr-xr-x
extract-ikconfig	1.74 KB	-rwxr-xr-x
extract-module-sig.pl	3.66 KB	-rwxr-xr-x
extract-sys-certs.pl	3.75 KB	-rwxr-xr-x
extract-vmlinux	1.66 KB	-rwxr-xr-x
extract_xc3028.pl	44.62 KB	-rwxr-xr-x
faddr2line	8.63 KB	-rwxr-xr-x
file-size.sh	86 B	-rwxr-xr-x
find-unused-docs.sh	1.27 KB	-rwxr-xr-x
gcc-x86_32-has-stack-protector...	405 B	-rwxr-xr-x
gcc-x86_64-has-stack-protector...	195 B	-rwxr-xr-x
gen-randstruct-seed.sh	228 B	-rwxr-xr-x
generate_initcall_order.pl	5.95 KB	-rwxr-xr-x
generate_rust_analyzer.py	5.54 KB	-rwxr-xr-x
generate_rust_target.rs	5.58 KB	-rw-r--r--
get_abi.pl	25.36 KB	-rwxr-xr-x
get_dvb_firmware	24.54 KB	-rwxr-xr-x
get_feat.pl	14.61 KB	-rwxr-xr-x
get_maintainer.pl	67.63 KB	-rwxr-xr-x
gfp-translate	2.08 KB	-rwxr-xr-x
git.orderFile	564 B	-rw-r--r--
head-object-list.txt	1.36 KB	-rw-r--r--
headerdep.pl	3.5 KB	-rwxr-xr-x
headers_install.sh	2.76 KB	-rwxr-xr-x
insert-sys-cert.c	13.08 KB	-rw-r--r--
install.sh	986 B	-rwxr-xr-x
jobserver-exec	2.56 KB	-rwxr-xr-x
kallsyms.c	17.75 KB	-rw-r--r--
kernel-doc	77.13 KB	-rwxr-xr-x
ld-version.sh	1.82 KB	-rwxr-xr-x
leaking_addresses.pl	12.84 KB	-rwxr-xr-x
link-vmlinux.sh	7.66 KB	-rwxr-xr-x
makelst	808 B	-rwxr-xr-x
markup_oops.pl	7.92 KB	-rwxr-xr-x
min-tool-version.sh	630 B	-rwxr-xr-x
misc-check	509 B	-rwxr-xr-x
mkcompile_h	642 B	-rwxr-xr-x
mksysmap	2.08 KB	-rwxr-xr-x
mkuboot.sh	414 B	-rwxr-xr-x
module.lds.S	1.43 KB	-rw-r--r--
modules-check.sh	443 B	-rwxr-xr-x
nsdeps	1.63 KB	-rw-r--r--
objdiff	2.83 KB	-rwxr-xr-x
objdump-func	848 B	-rwxr-xr-x
orc_hash.sh	316 B	-rw-r--r--
pahole-version.sh	269 B	-rwxr-xr-x
parse-maintainers.pl	4.54 KB	-rwxr-xr-x
patch-kernel	9.95 KB	-rwxr-xr-x
profile2linkerlist.pl	414 B	-rwxr-xr-x
prune-kernel	912 B	-rwxr-xr-x
recordmcount.c	17.51 KB	-rw-r--r--
recordmcount.h	19.37 KB	-rw-r--r--
recordmcount.pl	17.34 KB	-rwxr-xr-x
relocs_check.sh	717 B	-rwxr-xr-x
remove-stale-files	1.29 KB	-rwxr-xr-x
rust_is_available.sh	9.48 KB	-rwxr-xr-x
rust_is_available_bindgen_libc...	91 B	-rw-r--r--
rust_is_available_test.py	17.7 KB	-rwxr-xr-x
rustdoc_test_builder.rs	3.25 KB	-rw-r--r--
rustdoc_test_gen.rs	9.48 KB	-rw-r--r--
setlocalversion	5.18 KB	-rwxr-xr-x
show_delta	3.04 KB	-rwxr-xr-x
sign-file.c	10.4 KB	-rw-r--r--
sorttable.c	7.68 KB	-rw-r--r--
sorttable.h	12.99 KB	-rw-r--r--
spdxcheck-test.sh	284 B	-rw-r--r--
spdxcheck.py	15.23 KB	-rwxr-xr-x
spdxexclude	417 B	-rw-r--r--
spelling.txt	34.18 KB	-rw-r--r--
sphinx-pre-install	25.07 KB	-rwxr-xr-x
split-man.pl	604 B	-rwxr-xr-x
ssl-common.h	678 B	-rw-r--r--
stackdelta	1.84 KB	-rwxr-xr-x
stackusage	794 B	-rwxr-xr-x
subarch.include	647 B	-rw-r--r--
syscallhdr.sh	1.89 KB	-rwxr-xr-x
syscallnr.sh	1.45 KB	-rwxr-xr-x
syscalltbl.sh	1.82 KB	-rwxr-xr-x
tags.sh	10.73 KB	-rwxr-xr-x
test_fortify.sh	2.23 KB	-rw-r--r--
tools-support-relr.sh	726 B	-rwxr-xr-x
unifdef.c	34.8 KB	-rw-r--r--
ver_linux	2.59 KB	-rwxr-xr-x
xen-hypercalls.sh	386 B	-rwxr-xr-x
xz_wrap.sh	516 B	-rwxr-xr-x

Code Editor : Makefile.build

# SPDX-License-Identifier: GPL-2.0
# ==========================================================================
# Building
# ==========================================================================

src := $(obj)

PHONY := $(obj)/
$(obj)/:

# Init all relevant variables used in kbuild files so
# 1) they have correct type
# 2) they do not inherit any value from the environment
obj-y :=
obj-m :=
lib-y :=
lib-m :=
always-y :=
always-m :=
targets :=
subdir-y :=
subdir-m :=
EXTRA_AFLAGS   :=
EXTRA_CFLAGS   :=
EXTRA_CPPFLAGS :=
EXTRA_LDFLAGS  :=
asflags-y  :=
ccflags-y  :=
rustflags-y :=
cppflags-y :=
ldflags-y  :=

subdir-asflags-y :=
subdir-ccflags-y :=

# Read auto.conf if it exists, otherwise ignore
-include include/config/auto.conf

include $(srctree)/scripts/Kbuild.include
include $(srctree)/scripts/Makefile.compiler
include $(kbuild-file)
include $(srctree)/scripts/Makefile.lib

# Do not include hostprogs rules unless needed.
# $(sort ...) is used here to remove duplicated words and excessive spaces.
hostprogs := $(sort $(hostprogs))
ifneq ($(hostprogs),)
include $(srctree)/scripts/Makefile.host
endif

# Do not include userprogs rules unless needed.
# $(sort ...) is used here to remove duplicated words and excessive spaces.
userprogs := $(sort $(userprogs))
ifneq ($(userprogs),)
include $(srctree)/scripts/Makefile.userprogs
endif

ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif

ifeq ($(need-modorder),)
ifneq ($(obj-m),)
$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
endif
endif

# ===========================================================================

# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))

targets-for-builtin := $(extra-y)

ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
targets-for-builtin += $(obj)/lib.a
endif

ifdef need-builtin
targets-for-builtin += $(obj)/built-in.a
endif

targets-for-modules := $(foreach x, o mod, \
				$(patsubst %.o, %.$x, $(filter %.o, $(obj-m))))

ifdef need-modorder
targets-for-modules += $(obj)/modules.order
endif

targets += $(targets-for-builtin) $(targets-for-modules)

# Linus' kernel sanity checking tool
ifeq ($(KBUILD_CHECKSRC),1)
  quiet_cmd_checksrc       = CHECK   $<
        cmd_checksrc       = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
else ifeq ($(KBUILD_CHECKSRC),2)
  quiet_cmd_force_checksrc = CHECK   $<
        cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
endif

ifneq ($(KBUILD_EXTRA_WARN),)
  cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $(KDOCFLAGS) \
        $(if $(findstring 2, $(KBUILD_EXTRA_WARN)), -Wall) \
        $<
endif

# Compile C sources (.c)
# ---------------------------------------------------------------------------

quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
      cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS) $(CC_FLAGS_LTO), $(c_flags)) -fverbose-asm -S -o $@ $<

$(obj)/%.s: $(src)/%.c FORCE
	$(call if_changed_dep,cc_s_c)

quiet_cmd_cpp_i_c = CPP $(quiet_modtag) $@
cmd_cpp_i_c       = $(CPP) $(c_flags) -o $@ $<

$(obj)/%.i: $(src)/%.c FORCE
	$(call if_changed_dep,cpp_i_c)

genksyms = scripts/genksyms/genksyms		\
	$(if $(1), -T $(2))			\
	$(if $(KBUILD_PRESERVE), -p)		\
	-r $(or $(wildcard $(2:.symtypes=.symref)), /dev/null)

# These mirror gensymtypes_S and co below, keep them in synch.
cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)

quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
      cmd_cc_symtypes_c = $(call cmd_gensymtypes_c,true,$@) >/dev/null

$(obj)/%.symtypes : $(src)/%.c FORCE
	$(call cmd,cc_symtypes_c)

# LLVM assembly
# Generate .ll files from .c
quiet_cmd_cc_ll_c = CC $(quiet_modtag)  $@
      cmd_cc_ll_c = $(CC) $(c_flags) -emit-llvm -S -fno-discard-value-names -o $@ $<

$(obj)/%.ll: $(src)/%.c FORCE
	$(call if_changed_dep,cc_ll_c)

# C (.c) files
# The C file is compiled and updated dependency information is generated.
# (See cmd_cc_o_c + relevant part of rule_cc_o_c)

is-single-obj-m = $(and $(part-of-module),$(filter $@, $(obj-m)),y)

# When a module consists of a single object, there is no reason to keep LLVM IR.
# Make $(LD) covert LLVM IR to ELF here.
ifdef CONFIG_LTO_CLANG
cmd_ld_single_m = $(if $(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_m) \
		$(cmd_objtool)

ifdef CONFIG_MODVERSIONS
# When module versioning is enabled the following steps are executed:
# o compile a <file>.o from <file>.c
# o if <file>.o doesn't contain a __export_symbol_*, i.e. does
#   not export symbols, it's done.
# o otherwise, we calculate symbol versions using the good old
#   genksyms on the preprocessed source and dump them into the .cmd file.
# o modpost will extract versions from that file and create *.c files that will
#   be compiled and linked to the kernel and/or modules.

gen_symversions =								\
	if $(NM) $@ 2>/dev/null | grep -q ' __export_symbol_'; then		\
		$(call cmd_gensymtypes_$(1),$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
			>> $(dot-target).cmd;					\
	fi

cmd_gen_symversions_c =	$(call gen_symversions,c)

endif

ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
# compiler will not generate __mcount_loc use recordmcount or recordmcount.pl
ifdef BUILD_C_RECORDMCOUNT
ifeq ("$(origin RECORDMCOUNT_WARN)", "command line")
  RECORDMCOUNT_FLAGS = -w
endif
# Due to recursion, we must skip empty.o.
# The empty.o file is created in the make process in order to determine
# the target endianness and word size. It is made before all other C
# files, including recordmcount.
sub_cmd_record_mcount =					\
	if [ $(@) != "scripts/mod/empty.o" ]; then	\
		$(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)";	\
	fi;
recordmcount_source := $(srctree)/scripts/recordmcount.c \
		    $(srctree)/scripts/recordmcount.h
else
sub_cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
	"$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
	"$(if $(CONFIG_64BIT),64,32)" \
	"$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \
	"$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \
	"$(if $(part-of-module),1,0)" "$(@)";
recordmcount_source := $(srctree)/scripts/recordmcount.pl
endif # BUILD_C_RECORDMCOUNT
cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)),	\
	$(sub_cmd_record_mcount))
endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT

# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file

is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n),y)

$(obj)/%.o: objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y))

ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),)
cmd_warn_shared_object = $(if $(word 2, $(modname-multi)),$(warning $(kbuild-file): $*.o is added to multiple modules: $(modname-multi)))
endif

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

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

# Built-in and composite module parts
$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
	$(call if_changed_rule,cc_o_c)
	$(call cmd,force_checksrc)

# To make this rule robust against "Argument list too long" error,
# ensure to add $(obj)/ prefix by a shell command.
cmd_mod = printf '%s\n' $(call real-search, $*.o, .o, -objs -y -m) | \
	$(AWK) '!x[$$0]++ { print("$(obj)/"$$0) }' > $@

$(obj)/%.mod: FORCE
	$(call if_changed,mod)

quiet_cmd_cc_lst_c = MKLST   $@
      cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \
				     System.map $(OBJDUMP) > $@

$(obj)/%.lst: $(src)/%.c FORCE
	$(call if_changed_dep,cc_lst_c)

# Compile Rust sources (.rs)
# ---------------------------------------------------------------------------

rust_allowed_features := new_uninit,offset_of

# `--out-dir` is required to avoid temporaries being created by `rustc` in the
# current working directory, which may be not accessible in the out-of-tree
# modules case.
rust_common_cmd = \
	RUST_MODFILE=$(modfile) $(RUSTC_OR_CLIPPY) $(rust_flags) \
	-Zallow-features=$(rust_allowed_features) \
	-Zcrate-attr=no_std \
	-Zcrate-attr='feature($(rust_allowed_features))' \
	-Zunstable-options --extern force:alloc --extern kernel \
	--crate-type rlib -L $(objtree)/rust/ \
	--crate-name $(basename $(notdir $@)) \
	--sysroot=/dev/null \
	--out-dir $(dir $@) --emit=dep-info=$(depfile)

# `--emit=obj`, `--emit=asm` and `--emit=llvm-ir` imply a single codegen unit
# will be used. We explicitly request `-Ccodegen-units=1` in any case, and
# the compiler shows a warning if it is not 1. However, if we ever stop
# requesting it explicitly and we start using some other `--emit` that does not
# imply it (and for which codegen is performed), then we would be out of sync,
# i.e. the outputs we would get for the different single targets (e.g. `.ll`)
# would not match each other.

quiet_cmd_rustc_o_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
      cmd_rustc_o_rs = $(rust_common_cmd) --emit=obj=$@ $<

$(obj)/%.o: $(src)/%.rs FORCE
	$(call if_changed_dep,rustc_o_rs)

quiet_cmd_rustc_rsi_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
      cmd_rustc_rsi_rs = \
	$(rust_common_cmd) -Zunpretty=expanded $< >$@; \
	command -v $(RUSTFMT) >/dev/null && $(RUSTFMT) $@

$(obj)/%.rsi: $(src)/%.rs FORCE
	$(call if_changed_dep,rustc_rsi_rs)

quiet_cmd_rustc_s_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
      cmd_rustc_s_rs = $(rust_common_cmd) --emit=asm=$@ $<

$(obj)/%.s: $(src)/%.rs FORCE
	$(call if_changed_dep,rustc_s_rs)

quiet_cmd_rustc_ll_rs = $(RUSTC_OR_CLIPPY_QUIET) $(quiet_modtag) $@
      cmd_rustc_ll_rs = $(rust_common_cmd) --emit=llvm-ir=$@ $<

$(obj)/%.ll: $(src)/%.rs FORCE
	$(call if_changed_dep,rustc_ll_rs)

# Compile assembler sources (.S)
# ---------------------------------------------------------------------------

# .S file exports must have their C prototypes defined in asm/asm-prototypes.h
# or a file that it includes, in order to get versioned symbols. We build a
# dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
# the .S file (with trailing ';'), and run genksyms on that, to extract vers.
#
# This is convoluted. The .S file must first be preprocessed to run guards and
# expand names, then the resulting exports must be constructed into plain
# EXPORT_SYMBOL(symbol); to build our dummy C file, and that gets preprocessed
# to make the genksyms input.
#
# These mirror gensymtypes_c and co above, keep them in synch.
cmd_gensymtypes_S =                                                         \
   { echo "\#include <linux/kernel.h>" ;                                    \
     echo "\#include <asm/asm-prototypes.h>" ;                              \
     $(NM) $@ | sed -n 's/.* __export_symbol_$.*$/EXPORT_SYMBOL(\1);/p' ; } | \
    $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | $(genksyms)

quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
      cmd_cc_symtypes_S = $(call cmd_gensymtypes_S,true,$@) >/dev/null

$(obj)/%.symtypes : $(src)/%.S FORCE
	$(call cmd,cc_symtypes_S)

quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@
cmd_cpp_s_S       = $(CPP) $(a_flags) -o $@ $<

$(obj)/%.s: $(src)/%.S FORCE
	$(call if_changed_dep,cpp_s_S)

quiet_cmd_as_o_S = AS $(quiet_modtag)  $@
      cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool)

ifdef CONFIG_ASM_MODVERSIONS

# versioning matches the C process described above, with difference that
# we parse asm-prototypes.h C header to get function definitions.

cmd_gen_symversions_S = $(call gen_symversions,S)

endif

$(obj)/%.o: $(src)/%.S FORCE
	$(call if_changed_rule,as_o_S)

targets += $(filter-out $(subdir-builtin), $(real-obj-y))
targets += $(filter-out $(subdir-modorder), $(real-obj-m))
targets += $(real-dtb-y) $(lib-y) $(always-y)

# Linker scripts preprocessor (.lds.S -> .lds)
# ---------------------------------------------------------------------------
quiet_cmd_cpp_lds_S = LDS     $@
      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -U$(ARCH) \
	                     -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<

$(obj)/%.lds: $(src)/%.lds.S FORCE
	$(call if_changed_dep,cpp_lds_S)

# ASN.1 grammar
# ---------------------------------------------------------------------------
quiet_cmd_asn1_compiler = ASN.1   $(basename $@).[ch]
      cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \
				$(basename $@).c $(basename $@).h

$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
	$(call cmd,asn1_compiler)

# Build the compiled-in targets
# ---------------------------------------------------------------------------

# To build objects in subdirs, we need to descend into the directories
$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
$(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;

#
# Rule to compile a set of .o files into one .a file (without symbol table)
#
# To make this rule robust against "Argument list too long" error,
# remove $(obj)/ prefix, and restore it by a shell command.

quiet_cmd_ar_builtin = AR      $@
      cmd_ar_builtin = rm -f $@; \
	$(if $(real-prereqs), printf "$(obj)/%s " $(patsubst $(obj)/%,%,$(real-prereqs)) | xargs) \
	$(AR) cDPrST $@

$(obj)/built-in.a: $(real-obj-y) FORCE
	$(call if_changed,ar_builtin)

#
# Rule to create modules.order file
#
# Create commands to either record .ko file or cat modules.order from
# a subdirectory
# Add $(obj-m) as the prerequisite to avoid updating the timestamp of
# modules.order unless contained modules are updated.

cmd_modules_order = { $(foreach m, $(real-prereqs), \
	$(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
	> $@

$(obj)/modules.order: $(obj-m) FORCE
	$(call if_changed,modules_order)

#
# Rule to compile a set of .o files into one .a file (with symbol table)
#

$(obj)/lib.a: $(lib-y) FORCE
	$(call if_changed,ar)

quiet_cmd_ld_multi_m = LD [M]  $@
      cmd_ld_multi_m = $(LD) $(ld_flags) -r -o $@ @$< $(cmd_objtool)

define rule_ld_multi_m
	$(call cmd_and_savecmd,ld_multi_m)
	$(call cmd,gen_objtooldep)
endef

$(multi-obj-m): objtool-enabled := $(delay-objtool)
$(multi-obj-m): part-of-module := y
$(multi-obj-m): %.o: %.mod FORCE
	$(call if_changed_rule,ld_multi_m)
$(call multi_depend, $(multi-obj-m), .o, -objs -y -m)

# Add intermediate targets:
# When building objects with specific suffix patterns, add intermediate
# targets that the final targets are derived from.
intermediate_targets = $(foreach sfx, $(2), \
				$(patsubst %$(strip $(1)),%$(sfx), \
					$(filter %$(strip $(1)), $(targets))))
# %.asn1.o <- %.asn1.[ch] <- %.asn1
# %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
# %.dtbo.o <- %.dtbo.S <- %.dtbo <- %.dtso
# %.lex.o <- %.lex.c <- %.l
# %.tab.o <- %.tab.[ch] <- %.y
targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
	   $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \
	   $(call intermediate_targets, .dtbo.o, .dtbo.S .dtbo) \
	   $(call intermediate_targets, .lex.o, .lex.c) \
	   $(call intermediate_targets, .tab.o, .tab.c .tab.h)

# Build
# ---------------------------------------------------------------------------

$(obj)/: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \
	 $(if $(KBUILD_MODULES), $(targets-for-modules)) \
	 $(subdir-ym) $(always-y)
	@:

# Single targets
# ---------------------------------------------------------------------------

single-subdirs := $(foreach d, $(subdir-ym), $(if $(filter $d/%, $(MAKECMDGOALS)), $d))
single-subdir-goals := $(filter $(addsuffix /%, $(single-subdirs)), $(MAKECMDGOALS))

$(single-subdir-goals): $(single-subdirs)
	@:

# Descending
# ---------------------------------------------------------------------------

PHONY += $(subdir-ym)
$(subdir-ym):
	$(Q)$(MAKE) $(build)=$@ \
	need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \
	need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1) \
	$(filter $@/%, $(single-subdir-goals))

# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------

PHONY += FORCE

FORCE:

targets += $(filter-out $(single-subdir-goals), $(MAKECMDGOALS))
targets := $(filter-out $(PHONY), $(targets))

# Read all saved command lines and dependencies for the $(targets) we
# may be building above, using $(if_changed{,_dep}). As an
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.

existing-targets := $(wildcard $(sort $(targets)))

-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)

# Create directories for object files if they do not exist
obj-dirs := $(sort $(patsubst %/,%, $(dir $(targets))))
# If targets exist, their directories apparently exist. Skip mkdir.
existing-dirs := $(sort $(patsubst %/,%, $(dir $(existing-targets))))
obj-dirs := $(strip $(filter-out $(existing-dirs), $(obj-dirs)))
ifneq ($(obj-dirs),)
$(shell mkdir -p $(obj-dirs))
endif

.PHONY: $(PHONY)

${this.title}

Code Editor : Makefile.build