Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182# SPDX-License-Identifier: GPL-2.0#### Main build makefile.## Lots of this code have been borrowed or heavily inspired from parts# of kbuild code, which is not credited, but mostly developed by:## Copyright (C) Sam Ravnborg <sam@mars.ravnborg.org>, 2015# Copyright (C) Linus Torvalds <torvalds@linux-foundation.org>, 2015#
PHONY := __build__build:
build-dir := $(srctree)/tools/build
# Define $(fixdep) for dep-cmd functionifeq ($(OUTPUT),) fixdep := $(build-dir)/fixdepelse fixdep := $(OUTPUT)/fixdependif
# Generic definitionsinclude $(build-dir)/Build.include
# do not force detected configuration-include $(OUTPUT).config-detected
# Init all relevant variables used in build files so# 1) they have correct type# 2) they do not inherit any value from the environmentsubdir-y :=obj-y :=subdir-y :=subdir-obj-y :=
# Build definitionsbuild-file := $(dir)/Build-include $(build-file)
quiet_cmd_flex = FLEX $@quiet_cmd_bison = BISON $@quiet_cmd_test = TEST $@
# Create directory unless it existsquiet_cmd_mkdir = MKDIR $(dir $@) cmd_mkdir = mkdir -p $(dir $@) rule_mkdir = $(if $(wildcard $(dir $@)),,@$(call echo-cmd,mkdir) $(cmd_mkdir))
# Compile commandquiet_cmd_cc_o_c = CC $@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
quiet_cmd_host_cc_o_c = HOSTCC $@ cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $<
quiet_cmd_cxx_o_c = CXX $@ cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $<
quiet_cmd_cpp_i_c = CPP $@ cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
quiet_cmd_cc_s_c = AS $@ cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
quiet_cmd_gen = GEN $@
# Link agregate command# If there's nothing to link, create empty $@ object.quiet_cmd_ld_multi = LD $@ cmd_ld_multi = $(if $(strip $(obj-y)),\ printf "$(objprefix)%s " $(patsubst $(objprefix)%,%,$(filter $(obj-y),$^)) | \ xargs $(LD) -r -o $@,rm -f $@; $(AR) rcs $@)
quiet_cmd_host_ld_multi = HOSTLD $@ cmd_host_ld_multi = $(if $(strip $(obj-y)),\ printf "$(objprefix)%s " $(patsubst $(objprefix)%,%,$(filter $(obj-y),$^)) | \ xargs $(HOSTLD) -r -o $@,rm -f $@; $(HOSTAR) rcs $@)
rust_common_cmd = \ $(RUSTC) $(rust_flags) \ --crate-type staticlib -L $(objtree)/rust/ \ --emit=dep-info=$(depfile),link
quiet_cmd_rustc_a_rs = $(RUSTC) $(quiet_modtag) $@ cmd_rustc_a_rs = $(rust_common_cmd) -o $@ -g $< $(cmd_objtool)
ifneq ($(filter $(obj),$(hostprogs)),) host = host_endif
# Build rules$(OUTPUT)%.o: %.c FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%.o: %.cpp FORCE $(call rule_mkdir) $(call if_changed_dep,cxx_o_c)
$(OUTPUT)%.o: %.S FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%.i: %.c FORCE $(call rule_mkdir) $(call if_changed_dep,cpp_i_c)
$(OUTPUT)%.s: %.S FORCE $(call rule_mkdir) $(call if_changed_dep,cpp_i_c)
$(OUTPUT)%.s: %.c FORCE $(call rule_mkdir) $(call if_changed_dep,cc_s_c)
# it's recommended to build a static rust library, when a foreight (to rust)# linker is used.$(OUTPUT)%.a: %.rs FORCE $(call rule_mkdir) $(call if_changed_dep,rustc_a_rs)
# bison and flex files are generated in the OUTPUT directory# so it needs a separate rule to depend on them properly$(OUTPUT)%-bison.o: $(OUTPUT)%-bison.c FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%-flex.o: $(OUTPUT)%-flex.c FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c)
# Gather build data:# obj-y - list of build objects# subdir-y - list of directories to nest# subdir-obj-y - list of directories objects 'dir/$(obj)-in.o'obj-y := $($(obj)-y)subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))obj-y := $(patsubst %/, %/$(obj)-in.o, $(obj-y))subdir-obj-y := $(filter %/$(obj)-in.o, $(obj-y))
# '$(OUTPUT)/dir' prefix to all objectsobjprefix := $(subst ./,,$(OUTPUT)$(dir)/)obj-y := $(addprefix $(objprefix),$(obj-y))subdir-obj-y := $(addprefix $(objprefix),$(subdir-obj-y))
# Separate out test log files from real build objects.test-y := $(filter %_log, $(obj-y))obj-y := $(filter-out %_log, $(obj-y))
# Final '$(obj)-in.o' objectin-target := $(objprefix)$(obj)-in.o
PHONY += $(subdir-y)
$(subdir-y): $(Q)$(MAKE) -f $(build-dir)/Makefile.build dir=$(dir)/$@ obj=$(obj)
$(sort $(subdir-obj-y)): $(subdir-y) ;
$(in-target): $(obj-y) $(test-y) FORCE $(call rule_mkdir) $(call if_changed,$(host)ld_multi)
__build: $(in-target) @:
PHONY += FORCEFORCE:
# Include all cmd files to get all the dependency rules# for all objects includedtargets := $(wildcard $(sort $(obj-y) $(in-target) $(MAKECMDGOALS)))cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),) include $(cmd_files)endif
.PHONY: $(PHONY)