mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
1d35aae78f
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list) - Use more threads when building Debian packages in parallel - Fix warnings shown during the RPM kernel package uninstallation - Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to Makefile - Support GCC's -fmin-function-alignment flag - Fix a null pointer dereference bug in modpost - Add the DTB support to the RPM package - Various fixes and cleanups in Kconfig -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmX8HGIVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGYfIQAIl/zEFoNVSHGR4TIvO7SIwkT4MM VAm0W6XRFaXfIGw8HL/MXe+U9jAyeQ9yL9uUVv8PqFTO+LzBbW1X1X97tlmrlQsC 7mdxbA1KJXwkwt4wH/8/EZQMwHr327vtVH4AilSm+gAaWMXaSKAye3ulKQQ2gevz vP6aOcfbHIWOPdxA53cLdSl9LOGrYNczKySHXKV9O39T81F+ko7wPpdkiMWw5LWG ISRCV8bdXli8j10Pmg8jlbevSKl4Z5FG2BVw/Cl8rQ5tBBoCzFsUPnnp9A29G8QP OqRhbwxtkSm67BMJAYdHnhjp/l0AOEbmetTGpna+R06hirOuXhR3vc6YXZxhQjff LmKaqfG5YchRALS1fNDsRUNIkQxVJade+tOUG+V4WbxHQKWX7Ghu5EDlt2/x7P0p +XLPE48HoNQLQOJ+pgIOkaEDl7WLfGhoEtEgprZBuEP2h39xcdbYJyF10ZAAR4UZ FF6J9lDHbf7v1uqD2YnAQJQ6jJ06CvN6/s6SdiJnCWSs5cYRW0fnYigSIuwAgGHZ c/QFECoGEflXGGuqZDl5iXiIjhWKzH2nADSVEs7maP47vapcMWb9gA7VBNoOr5M0 IXuFo1khChF4V2pxqlDj3H5TkDlFENYT/Wjh+vvjx8XplKCRKaSh+LaZ39hja61V dWH7BPecS44h4KXx =tFdl -----END PGP SIGNATURE----- Merge tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Generate a list of built DTB files (arch/*/boot/dts/dtbs-list) - Use more threads when building Debian packages in parallel - Fix warnings shown during the RPM kernel package uninstallation - Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to Makefile - Support GCC's -fmin-function-alignment flag - Fix a null pointer dereference bug in modpost - Add the DTB support to the RPM package - Various fixes and cleanups in Kconfig * tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (67 commits) kconfig: tests: test dependency after shuffling choices kconfig: tests: add a test for randconfig with dependent choices kconfig: tests: support KCONFIG_SEED for the randconfig runner kbuild: rpm-pkg: add dtb files in kernel rpm kconfig: remove unneeded menu_is_visible() call in conf_write_defconfig() kconfig: check prompt for choice while parsing kconfig: lxdialog: remove unused dialog colors kconfig: lxdialog: fix button color for blackbg theme modpost: fix null pointer dereference kbuild: remove GCC's default -Wpacked-bitfield-compat flag kbuild: unexport abs_srctree and abs_objtree kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1 kconfig: remove named choice support kconfig: use linked list in get_symbol_str() to iterate over menus kconfig: link menus to a symbol kbuild: fix inconsistent indentation in top Makefile kbuild: Use -fmin-function-alignment when available alpha: merge two entries for CONFIG_ALPHA_GAMMA alpha: merge two entries for CONFIG_ALPHA_EV4 kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj) ...
519 lines
17 KiB
Makefile
519 lines
17 KiB
Makefile
# 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)))
|
|
subdir-dtbslist := $(sort $(filter %/dtbs-list, $(dtb-y)))
|
|
|
|
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%, $(OBJECT_FILES_NON_STANDARD_$(target-stem).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))' \
|
|
--extern 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)/% ;
|
|
$(subdir-dtbslist): $(obj)/%/dtbs-list: $(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 and dtbs-list
|
|
#
|
|
# This is a list of build artifacts (module or dtb) from the current Makefile
|
|
# and its sub-directories. The timestamp should be updated when any of the
|
|
# member files.
|
|
|
|
cmd_gen_order = { $(foreach m, $(real-prereqs), \
|
|
$(if $(filter %/$(notdir $@), $m), cat $m, echo $m);) :; } \
|
|
> $@
|
|
|
|
$(obj)/modules.order: $(obj-m) FORCE
|
|
$(call if_changed,gen_order)
|
|
|
|
$(obj)/dtbs-list: $(dtb-y) FORCE
|
|
$(call if_changed,gen_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)
|