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|
-include Kbuild
# Disable builti-n rules and variables
MAKEFLAGS += -r -R
# Disable output of entering/leaving directory messages
MAKEFLAGS += --no-print-directory
export MSG = @printf '\033[34m%-8s\033[0m %s\n'
this-makefile = $(lastword $(MAKEFILE_LIST))
srctree = $(realpath $(dir $(this-makefile)))
LLVM ?= 1
ifneq ($(LLVM),1)
ifneq ($(filter %/,$(LLVM)),)
LLVM_PREFIX = $(LLVM)
else ifneq ($(filter -%,$(LLVM)),)
LLVM_SUFFIX = $(LLVM)
endif
endif
# Variables
ifeq ($(LLVM),1)
CC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
LD = $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)
AR = $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)
STRIP = $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)
else
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld
AR = $(CROSS_COMPILE)ar
STRIP = $(CROSS_COMPILE)strip
endif
ifndef ARCH
ARCH := x86_64
endif
export CC LD AR STRIP CROSS_COMPILE ARCH
ifeq ($(V),1)
Q :=
else
Q := @
MAKEFLAGS += -s
endif
ifdef M
obj = $(M)/
endif
# CFLAGS
KBUILD_CFLAGS :=
KBUILD_CFLAGS += -Wall -Wextra
KBUILD_CFLAGS += -nostdinc
KBUILD_CFLAGS += -target $(ARCH)-linux-eabi
KBUILD_CFLAGS += -I$(srctree)/include
KBUILD_CFLAGS += -I$(srctree)/include/arch/$(ARCH)
KBUILD_CFLAGS += -std=c11
KBUILD_CFLAGS += -fno-common
KBUILD_CFLAGS += -fno-PIE
KBUILD_CFLAGS += -fstrict-aliasing
KBUILD_CFLAGS += -fno-delete-null-pointer-checks
KBUILD_CFLAGS += -flto
# Disable overflow optimizations
KBUILD_CFLAGS += -fno-strict-overflow
# Disable stack check
KBUILD_CFLAGS += -fno-stack-check
# Weird loops transformations to wcslen
KBUILD_CFLAGS += -fno-builtin-wcslen
KBUILD_ASFLAGS :=
# Assembly does not need -nostdinc; clang warns it is unused.
KBUILD_ASFLAGS += -target $(ARCH)-linux-eabi
KBUILD_ASFLAGS += -I$(srctree)/include
KBUILD_ASFLAGS += -I$(srctree)/include/arch/$(ARCH)
# LDFLAGS
KBUILD_LDFLAGS :=
KBUILD_LDFLAGS += --gc-sections
KBUILD_LDFLAGS += --build-id=none
KBUILD_LDFLAGS += --as-needed
PHONY :=
KCONFIG_CONFIG ?= .config
export Q srctree MAKEFLAGS KCONFIG_CONFIG \
KBUILD_CFLAGS KBUILD_ASFLAGS KBUILD_LDFLAGS
all: $(srctree)/include/config/auto.conf $(srctree)/include/generated/autoconf.h
$(Q)$(MAKE) -f scripts/makefile.build obj=$(obj)
clean:
$(Q)$(MAKE) -f scripts/makefile.build obj=$(obj) clean
$(Q)rm -f $(srctree)/include/config/auto.conf
$(Q)rm -f $(srctree)/include/generated/autoconf.h
distclean: clean
$(Q)$(MAKE) -C scripts/kconfig clean
$(Q)rm -f compile_commands.json
$(KCONFIG_CONFIG):
@echo >&2 '***'
@echo >&2 '*** Configuration file "$@" not found!'
@echo >&2 '***'
@echo >&2 '*** Please run some configurator'
@echo >&2 '*** (e.g. "make oldconfig" or "make menuconfig"'
@echo >&2 '***'
@false
compile_commands.json:
$(Q)bear -- $(MAKE) -f scripts/makefile.build obj=$(obj)
PHONY += menuconfig
menuconfig:
$(Q)$(MAKE) -f scripts/kconfig/makefile menuconfig
PHONY += defconfig
defconfig:
$(Q)$(MAKE) -f scripts/kconfig/makefile defconfig
include-what-you-use: compile_commands.json
$(Q)iwyu_tool.py -p. -j$(nproc) -- \
--update_comments | \
fix_includes.py --comments \
--quoted_includes_first \
--update_comments \
--reorder
clang-tidy: compile_commands.json
$(Q)clang-tidy -header-filter=.* -p=. $(shell find . -name '*.c' -o -name '*.h' | grep -v './scripts/\|dtoa\|linux\|arch\|bits')
clang-format:
$(Q)clang-format -i $(shell find . -name '*.c' -o -name '*.h' | grep -v './scripts/')
%/include/config/auto.conf %/include/generated/autoconf.h: $(KCONFIG_CONFIG) compile_commands.json
$(Q)$(MAKE) -f scripts/kconfig/makefile syncconfig
.PHONY: $(PHONY)
|
