tools/build/Makefile.build

Source file repositories/reference/linux-study-clean/tools/build/Makefile.build

File Facts

System
Linux kernel
Corpus path
tools/build/Makefile.build
Extension
.build
Size
4946 bytes
Lines
182
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: build/configuration rule
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

# 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 $(fixdep) for dep-cmd function
ifeq ($(OUTPUT),)
  fixdep := $(build-dir)/fixdep
else
  fixdep := $(OUTPUT)/fixdep
endif

# Generic definitions
include $(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 environment
subdir-y     :=
obj-y        :=
subdir-y     :=
subdir-obj-y :=

# Build definitions
build-file := $(dir)/Build
-include $(build-file)

quiet_cmd_flex  = FLEX    $@
quiet_cmd_bison = BISON   $@
quiet_cmd_test  = TEST    $@

# Create directory unless it exists
quiet_cmd_mkdir = MKDIR   $(dir $@)
      cmd_mkdir = mkdir -p $(dir $@)
     rule_mkdir = $(if $(wildcard $(dir $@)),,@$(call echo-cmd,mkdir) $(cmd_mkdir))

# Compile command
quiet_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.

Annotation

Implementation Notes