mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-25 14:31:21 +02:00
b5a2046376
b42841b7bb62 kbuild: Get rid of KBUILD_STR 2aedcd098a94 kbuild: suppress annoying "... is up to date." message 9c8fa9bc08f6 kbuild: fix if_change and friends to consider argument order ebf003f0cfb3 kbuild: Consolidate header generation from ASM offset information 2982c953570b kbuild: remove redundant $(wildcard ...) for cmd_files calculation 8a78756eb545 kbuild: create object directories simpler and faster 4d4b5c2e3b6e treewide: remove explicit rules for *offsets.s 01d509a48b46 kbuild: remove unimportant comments from ./Kbuild Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
444 lines
14 KiB
Makefile
444 lines
14 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
# ==========================================================================
|
|
# Building
|
|
# ==========================================================================
|
|
|
|
# Modified for U-Boot
|
|
prefix := tpl
|
|
src := $(patsubst $(prefix)/%,%,$(obj))
|
|
ifeq ($(obj),$(src))
|
|
prefix := spl
|
|
src := $(patsubst $(prefix)/%,%,$(obj))
|
|
ifeq ($(obj),$(src))
|
|
prefix := .
|
|
endif
|
|
endif
|
|
|
|
PHONY := __build
|
|
__build:
|
|
|
|
# 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 :=
|
|
targets :=
|
|
subdir-y :=
|
|
subdir-m :=
|
|
EXTRA_AFLAGS :=
|
|
EXTRA_CFLAGS :=
|
|
EXTRA_CPPFLAGS :=
|
|
EXTRA_LDFLAGS :=
|
|
asflags-y :=
|
|
ccflags-y :=
|
|
cppflags-y :=
|
|
ldflags-y :=
|
|
|
|
subdir-asflags-y :=
|
|
subdir-ccflags-y :=
|
|
|
|
# Read auto.conf if it exists, otherwise ignore
|
|
# Modified for U-Boot
|
|
-include include/config/auto.conf
|
|
-include $(prefix)/include/autoconf.mk
|
|
include scripts/Makefile.uncmd_spl
|
|
|
|
include scripts/Kbuild.include
|
|
|
|
# For backward compatibility check that these variables do not change
|
|
save-cflags := $(CFLAGS)
|
|
|
|
# The filename Kbuild has precedence over Makefile
|
|
kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
|
|
kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
|
|
include $(kbuild-file)
|
|
|
|
# Added for U-Boot
|
|
asflags-y += $(PLATFORM_CPPFLAGS)
|
|
ccflags-y += $(PLATFORM_CPPFLAGS)
|
|
cppflags-y += $(PLATFORM_CPPFLAGS)
|
|
|
|
# If the save-* variables changed error out
|
|
ifeq ($(KBUILD_NOPEDANTIC),)
|
|
ifneq ("$(save-cflags)","$(CFLAGS)")
|
|
$(error CFLAGS was changed in "$(kbuild-file)". Fix it to use ccflags-y)
|
|
endif
|
|
endif
|
|
|
|
include scripts/Makefile.lib
|
|
|
|
# Do not include host rules unless needed
|
|
ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),)
|
|
include scripts/Makefile.host
|
|
endif
|
|
|
|
ifndef obj
|
|
$(warning kbuild: Makefile.build is included improperly)
|
|
endif
|
|
|
|
# ===========================================================================
|
|
|
|
ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
|
|
lib-target := $(obj)/lib.a
|
|
endif
|
|
|
|
ifneq ($(strip $(obj-y) $(obj-m) $(obj-) $(subdir-m) $(lib-target)),)
|
|
builtin-target := $(obj)/built-in.o
|
|
endif
|
|
|
|
modorder-target := $(obj)/modules.order
|
|
|
|
# We keep a list of all modules in $(MODVERDIR)
|
|
|
|
__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
|
|
$(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \
|
|
$(subdir-ym) $(always)
|
|
@:
|
|
|
|
# Linus' kernel sanity checking tool
|
|
ifneq ($(KBUILD_CHECKSRC),0)
|
|
ifeq ($(KBUILD_CHECKSRC),2)
|
|
quiet_cmd_force_checksrc = CHECK $<
|
|
cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ;
|
|
else
|
|
quiet_cmd_checksrc = CHECK $<
|
|
cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< ;
|
|
endif
|
|
endif
|
|
|
|
# Do section mismatch analysis for each module/built-in.o
|
|
ifdef CONFIG_DEBUG_SECTION_MISMATCH
|
|
cmd_secanalysis = ; scripts/mod/modpost $@
|
|
endif
|
|
|
|
# Compile C sources (.c)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# Default is built-in, unless we know otherwise
|
|
modkern_cflags = \
|
|
$(if $(part-of-module), \
|
|
$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
|
|
$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
|
|
quiet_modtag := $(empty) $(empty)
|
|
|
|
$(real-objs-m) : part-of-module := y
|
|
$(real-objs-m:.o=.i) : part-of-module := y
|
|
$(real-objs-m:.o=.s) : part-of-module := y
|
|
$(real-objs-m:.o=.lst): part-of-module := y
|
|
|
|
$(real-objs-m) : quiet_modtag := [M]
|
|
$(real-objs-m:.o=.i) : quiet_modtag := [M]
|
|
$(real-objs-m:.o=.s) : quiet_modtag := [M]
|
|
$(real-objs-m:.o=.lst): quiet_modtag := [M]
|
|
|
|
$(obj-m) : quiet_modtag := [M]
|
|
|
|
# Default for not multi-part modules
|
|
modname = $(basetarget)
|
|
|
|
$(multi-objs-m) : modname = $(modname-multi)
|
|
$(multi-objs-m:.o=.i) : modname = $(modname-multi)
|
|
$(multi-objs-m:.o=.s) : modname = $(modname-multi)
|
|
$(multi-objs-m:.o=.lst) : modname = $(modname-multi)
|
|
$(multi-objs-y) : modname = $(modname-multi)
|
|
$(multi-objs-y:.o=.i) : modname = $(modname-multi)
|
|
$(multi-objs-y:.o=.s) : modname = $(modname-multi)
|
|
$(multi-objs-y:.o=.lst) : modname = $(modname-multi)
|
|
|
|
quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
|
|
cmd_cc_s_c = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
|
|
|
|
$(obj)/%.s: $(src)/%.c FORCE
|
|
$(call if_changed_dep,cc_s_c)
|
|
|
|
quiet_cmd_cc_i_c = CPP $(quiet_modtag) $@
|
|
cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $<
|
|
|
|
$(obj)/%.i: $(src)/%.c FORCE
|
|
$(call if_changed_dep,cc_i_c)
|
|
|
|
cmd_gensymtypes = \
|
|
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \
|
|
$(GENKSYMS) $(if $(1), -T $(2)) \
|
|
$(if $(KBUILD_PRESERVE),-p) \
|
|
-r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
|
|
|
|
quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
|
|
cmd_cc_symtypes_c = \
|
|
set -e; \
|
|
$(call cmd_gensymtypes,true,$@) >/dev/null; \
|
|
test -s $@ || rm -f $@
|
|
|
|
$(obj)/%.symtypes : $(src)/%.c FORCE
|
|
$(call cmd,cc_symtypes_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)
|
|
|
|
quiet_cmd_cc_o_c = CC $(quiet_modtag) $@
|
|
|
|
ifndef CONFIG_MODVERSIONS
|
|
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
|
|
|
|
else
|
|
# When module versioning is enabled the following steps are executed:
|
|
# o compile a .tmp_<file>.o from <file>.c
|
|
# o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does
|
|
# not export symbols, we just rename .tmp_<file>.o to <file>.o and
|
|
# are done.
|
|
# o otherwise, we calculate symbol versions using the good old
|
|
# genksyms on the preprocessed source and postprocess them in a way
|
|
# that they are usable as a linker script
|
|
# o generate <file>.o from .tmp_<file>.o using the linker to
|
|
# replace the unresolved symbols __crc_exported_symbol with
|
|
# the actual value of the checksum generated by genksyms
|
|
|
|
cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
|
|
cmd_modversions = \
|
|
if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
|
|
$(call cmd_gensymtypes,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
|
|
> $(@D)/.tmp_$(@F:.o=.ver); \
|
|
\
|
|
$(LD) $(KBUILD_LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
|
|
-T $(@D)/.tmp_$(@F:.o=.ver); \
|
|
rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \
|
|
else \
|
|
mv -f $(@D)/.tmp_$(@F) $@; \
|
|
fi;
|
|
endif
|
|
|
|
ifdef CONFIG_FTRACE_MCOUNT_RECORD
|
|
# gcc 5 supports generating the mcount tables directly
|
|
ifneq ($(call cc-option,-mrecord-mcount,y),y)
|
|
KBUILD_CFLAGS += -mrecord-mcount
|
|
else
|
|
# else do it all manually
|
|
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 = set -e ; 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 := $(srctree)/scripts/recordmcount.pl
|
|
endif
|
|
cmd_record_mcount = \
|
|
if [ "$(findstring $(CC_FLAGS_FTRACE),$(_c_flags))" = \
|
|
"$(CC_FLAGS_FTRACE)" ]; then \
|
|
$(sub_cmd_record_mcount) \
|
|
fi;
|
|
endif # -record-mcount
|
|
endif
|
|
|
|
define rule_cc_o_c
|
|
$(call echo-cmd,checksrc) $(cmd_checksrc) \
|
|
$(call echo-cmd,cc_o_c) $(cmd_cc_o_c); \
|
|
$(cmd_modversions) \
|
|
$(call echo-cmd,record_mcount) \
|
|
$(cmd_record_mcount) \
|
|
scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \
|
|
$(dot-target).tmp; \
|
|
rm -f $(depfile); \
|
|
mv -f $(dot-target).tmp $(dot-target).cmd
|
|
endef
|
|
|
|
# Built-in and composite module parts
|
|
$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
|
|
$(call cmd,force_checksrc)
|
|
$(call if_changed_rule,cc_o_c)
|
|
|
|
# Single-part modules are special since we need to mark them in $(MODVERDIR)
|
|
|
|
$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
|
|
$(call cmd,force_checksrc)
|
|
$(call if_changed_rule,cc_o_c)
|
|
@{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.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 assembler sources (.S)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
|
|
|
|
$(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
|
|
$(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
|
|
|
|
quiet_cmd_as_s_S = CPP $(quiet_modtag) $@
|
|
cmd_as_s_S = $(CPP) $(a_flags) -o $@ $<
|
|
|
|
$(obj)/%.s: $(src)/%.S FORCE
|
|
$(call if_changed_dep,as_s_S)
|
|
|
|
quiet_cmd_as_o_S = AS $(quiet_modtag) $@
|
|
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
|
|
|
|
$(obj)/%.o: $(src)/%.S FORCE
|
|
$(call if_changed_dep,as_o_S)
|
|
|
|
targets += $(real-objs-y) $(real-objs-m) $(lib-y)
|
|
targets += $(extra-y) $(MAKECMDGOALS) $(always)
|
|
|
|
# Linker scripts preprocessor (.lds.S -> .lds)
|
|
# ---------------------------------------------------------------------------
|
|
quiet_cmd_cpp_lds_S = LDS $@
|
|
cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(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 $@
|
|
cmd_asn1_compiler = $(objtree)/tools/asn1_compiler $< \
|
|
$(subst .h,.c,$@) $(subst .c,.h,$@)
|
|
|
|
$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/tools/asn1_compiler
|
|
$(call cmd,asn1_compiler)
|
|
|
|
# Build the compiled-in targets
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# To build objects in subdirs, we need to descend into the directories
|
|
$(sort $(subdir-obj-y)): $(subdir-ym) ;
|
|
|
|
#
|
|
# Rule to compile a set of .o files into one .o file
|
|
#
|
|
ifdef builtin-target
|
|
quiet_cmd_link_o_target = LD $@
|
|
# If the list of objects to link is empty, just create an empty built-in.o
|
|
cmd_link_o_target = $(if $(strip $(obj-y)),\
|
|
$(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^) \
|
|
$(cmd_secanalysis),\
|
|
rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@)
|
|
|
|
$(builtin-target): $(obj-y) FORCE
|
|
$(call if_changed,link_o_target)
|
|
|
|
targets += $(builtin-target)
|
|
endif # builtin-target
|
|
|
|
#
|
|
# Rule to create modules.order file
|
|
#
|
|
# Create commands to either record .ko file or cat modules.order from
|
|
# a subdirectory
|
|
modorder-cmds = \
|
|
$(foreach m, $(modorder), \
|
|
$(if $(filter %/modules.order, $m), \
|
|
cat $m;, echo kernel/$m;))
|
|
|
|
$(modorder-target): $(subdir-ym) FORCE
|
|
$(Q)(cat /dev/null; $(modorder-cmds)) > $@
|
|
|
|
#
|
|
# Rule to compile a set of .o files into one .a file
|
|
#
|
|
ifdef lib-target
|
|
quiet_cmd_link_l_target = AR $@
|
|
cmd_link_l_target = rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@ $(lib-y)
|
|
|
|
$(lib-target): $(lib-y) FORCE
|
|
$(call if_changed,link_l_target)
|
|
|
|
targets += $(lib-target)
|
|
endif
|
|
|
|
#
|
|
# Rule to link composite objects
|
|
#
|
|
# Composite objects are specified in kbuild makefile as follows:
|
|
# <composite-object>-objs := <list of .o files>
|
|
# or
|
|
# <composite-object>-y := <list of .o files>
|
|
link_multi_deps = \
|
|
$(filter $(addprefix $(obj)/, \
|
|
$($(subst $(obj)/,,$(@:.o=-objs))) \
|
|
$($(subst $(obj)/,,$(@:.o=-y)))), $^)
|
|
|
|
quiet_cmd_link_multi-y = LD $@
|
|
cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis)
|
|
|
|
quiet_cmd_link_multi-m = LD [M] $@
|
|
cmd_link_multi-m = $(cmd_link_multi-y)
|
|
|
|
$(multi-used-y): FORCE
|
|
$(call if_changed,link_multi-y)
|
|
$(call multi_depend, $(multi-used-y), .o, -objs -y)
|
|
|
|
$(multi-used-m): FORCE
|
|
$(call if_changed,link_multi-m)
|
|
@{ echo $(@:.o=.ko); echo $(link_multi_deps); } > $(MODVERDIR)/$(@F:.o=.mod)
|
|
$(call multi_depend, $(multi-used-m), .o, -objs -y)
|
|
|
|
targets += $(multi-used-y) $(multi-used-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))))
|
|
# %.lex.o <- %.lex.c <- %.l
|
|
# %.tab.o <- %.tab.[ch] <- %.y
|
|
targets += $(call intermediate_targets, .lex.o, .lex.c) \
|
|
$(call intermediate_targets, .tab.o, .tab.c .tab.h)
|
|
|
|
# Descending
|
|
# ---------------------------------------------------------------------------
|
|
|
|
PHONY += $(subdir-ym)
|
|
$(subdir-ym):
|
|
$(Q)$(MAKE) $(build)=$@
|
|
|
|
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
|
|
# ---------------------------------------------------------------------------
|
|
|
|
PHONY += FORCE
|
|
|
|
FORCE:
|
|
|
|
# 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.
|
|
|
|
cmd_files := $(wildcard $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
|
|
|
|
ifneq ($(cmd_files),)
|
|
include $(cmd_files)
|
|
endif
|
|
|
|
# Create directories for object files if they do not exist
|
|
obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
|
|
$(shell mkdir -p $(obj-dirs))
|
|
|
|
.PHONY: $(PHONY)
|