110 lines
2.7 KiB
Makefile
110 lines
2.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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ifneq ($(KERNELRELEASE),)
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include Kbuild
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else
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# PATH
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KROOT=$(shell expr match $(PWD) '\(.*/kernel-[0-9.]*/\)')
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ROOT_DIR=$(realpath $(KROOT)/..)
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OUT_DIR=$(PWD)/out
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srctree=$(KROOT)
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src=$(subst $(KROOT),,$(PWD))
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ifeq ($(KDIR),)
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KDIR:=$(shell ls -d $(ROOT_DIR)/out_mgk_*/target/product/mgk_*/obj/KERNEL_OBJ/kernel-*/)
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endif
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$(info KDIR = "$(KDIR)")
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## reference config file to fetch clang version
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CONFIG=$(KROOT)build.config.constants
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CLANG_VERSION=$(shell cat $(CONFIG) | grep CLANG_VERSION | cut -d'=' -f 2)
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COMMON_CONFIG=$(KROOT)build.config.common
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CLANG_PREBUILT_BIN=$(shell cat $(COMMON_CONFIG) | grep CLANG_PREBUILT_BIN | cut -d'=' -f 2)
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CLANG_PATH=$(ROOT_DIR)/$(subst $${CLANG_VERSION},$(CLANG_VERSION),$(CLANG_PREBUILT_BIN))
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#$(info CLANG_VERSION = $(CLANG_VERSION))
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#$(info CLANG_PREBUILT_BIN = $(CLANG_PREBUILT_BIN))
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$(info CLANG_PATH = $(CLANG_PATH))
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# Toolchain
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TARGET_ARCH=arm64
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CROSS_COMPILE:=aarch64-linux-gnu-
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CROSS_COMPILE_COMPAT:=arm-linux-gnueabi-
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CC=$(CLANG_PATH)/clang
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LD=$(CLANG_PATH)/ld.lld
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AR=$(CLANG_PATH)/llvm-ar
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NM=$(CLANG_PATH)/llvm-nm
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STRIP=$(CLANG_PATH)/llvm-strip
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OBJCOPY=$(CLANG_PATH)/llvm-objcopy
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OBJDUMP=$(CLANG_PATH)/llvm-objdump
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READELF=$(CLANG_PATH)/llvm-readelf
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HOSTCC=$(CLANG_PATH)/clang
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HOSTAR=$(CLANG_PATH)/llvm-ar
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HOSTLD=$(CLANG_PATH)/ld.lld
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CFLAGS=-Wall LLVM=1 LLVM_IAS=1
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# disable BTF as workaround for "pahole: invalid operation -J" issue
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EXT_CONFIG="\
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CONFIG_DEBUG_INFO_BTF_MODULES= \
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"
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### DEFINE ###
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define kernel-make
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+$(MAKE) -C $(KDIR) \
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ARCH=$(TARGET_ARCH) \
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CROSS_COMPILE=$(CROSS_COMPILE) \
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CROSS_COMPILE_COMPAT=$(CROSS_COMPILE_COMPAT) \
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CFLAGS=$(CFLAGS) \
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CC=$(CC) \
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LD=$(LD) \
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AR=$(AR) \
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STRIP=$(STRIP) \
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OBJCOPY=$(OBJCOPY) \
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OBJDUMP=$(OBJDUMP) \
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READELF=$(READELF) \
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HOSTCC=$(HOSTCC) \
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HOSTAR=$(HOSTAR) \
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HOSTLD=$(HOSTLD) \
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M=$(PWD)
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endef
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N := 1
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define check-patch
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+git format-patch --stdout -$(N) HEAD | $(KROOT)/scripts/checkpatch.pl \
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--show-types --max-line-length=100 \
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--ignore=DT_SCHEMA_BINDING_PATCH,DT_SPLIT_BINDING_PATCH,GERRIT_CHANGE_ID,FILE_PATH_CHANGES,MEMORY_BARRIER,NEW_TYPEDEFS,VOLATILE,MISSING_SIGN_OFF,COMMIT_LOG_LONG_LINE
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endef
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.PHONY: all build clean check-env
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all: check-env build install list_ko
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build:
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$(kernel-make) modules $(EXT_CONFIG)
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install: build
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$(kernel-make) modules_install INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$(OUT_DIR)
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clean:
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$(kernel-make) clean
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# clean *.lds
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find -name "*.lds" -exec rm {} \;
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# clean out
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rm -rf $(OUT_DIR)
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check-env:
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ifndef KDIR
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$(error KDIR (prebuilt kernel path) is undefined)
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endif
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$(info prebuilt kernel = $(KDIR))
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checkpatch:
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$(check-patch)
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list_ko: install
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@echo "list of ko:"
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@find -name *.ko -exec ls -l {} \;
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endif
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