# ---------------------------------------------------------------------------- #
# All Right Reserved.
# Author       :
# Version      : V1.0.0  202x.01.01
# Description  :
# Note         : gaoyang3513@163.com.cn     Modified        202x.01.01
# ---------------------------------------------------------------------------- #
# That's our default target when none is given on the command line
PHONY := all
all:

# ---------------------------------------------------------------------------- #
# Path information
# ---------------------------------------------------------------------------- #
LOCAL_DIR     := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))

# SDK directories
SDK_TOP       ?= $(HOME)/Source/15-SG200x/01-MilkDuo/02-Project/SDK_SG200x_V2.0.0
KERNEL_DIR    ?= $(SDK_TOP)/linux_5.10/build/sg2000_milkv_duos_glibc_arm64_sd
TOOLCHAIN_DIR ?= $(SDK_TOP)/host-tools/gcc/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin

# Subdirectory
OUTPUT_DIR    := $(LOCAL_DIR)/output
INSTALL_DIR   ?= $(LOCAL_DIR)/__install

export KERNEL_DIR
# ---------------------------------------------------------------------------- #
# Functions
# ---------------------------------------------------------------------------- #
define filechk_version.h
	echo \#define LINUX_VERSION_CODE $(shell                         \
	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
endef

# ---------------------------------------------------------------------------- #
# Variables
# ---------------------------------------------------------------------------- #
VERSION       = 1
PATCHLEVEL    = 1
SUBLEVEL      = 0
EXTRAVERSION  =
NAME          = Kleptomaniac Octopus

version_h     := include/generated/version.h

MAKEFLAGS     += --no-print-directory

MULTI_CORES   ?= $(shell grep -c ^processor /proc/cpuinfo)

ifeq ("$(origin V)", "command line")
  KBUILD_VERBOSE = $(V)
endif
ifndef KBUILD_VERBOSE
  KBUILD_VERBOSE = 0
endif

ifeq ($(KBUILD_VERBOSE),1)
  quiet =
  Q     =
else
  quiet = quiet_
  Q     = @
endif

export Q quiet
# ---------------------------------------------------------------------------- #
# Compile configure
# ---------------------------------------------------------------------------- #
#CROSS_COMPILE ?= riscv64-unknown-linux-musl-
ARCH          ?= arm64
CROSS_COMPILE ?= aarch64-linux-gnu-

CC            := $(CROSS_COMPILE)gcc
LD            := $(CROSS_COMPILE)ld
AR            := $(CROSS_COMPILE)ar
STRIP         := $(CROSS_COMPILE)strip

PATH := $(TOOLCHAIN_DIR):$(PATH)

export ARCH CROSS_COMPILE PATH

# ---------------------------------------------------------------------------- #
# Objects
# ---------------------------------------------------------------------------- #
SUB_DIRS := 03-Bus/01-Platform/01-osdev
#$(warning "SUB_DIRS: $(SUB_DIRS)")

# ---------------------------------------------------------------------------- #
# Targets
# ---------------------------------------------------------------------------- #
.PHONY += init all clean distclean install menuconfig oldconfig $(version_h)

include scripts/Kbuild.include

all: init
	$(Q)for sub in $(SUB_DIRS); do \
		$(MAKE) -C $$sub; \
		$(MAKE) install INSTALL_DIR=$(OUTPUT_DIR) -C $$sub || exit "$$?"; \
	done;

clean:
	$(Q)for sub in $(SUB_DIRS); do \
		$(MAKE) clean -C $$sub || exit "$$?"; \
	done;
#       Directory
	$(Q)if [ -d $(LOCAL_DIR)/include/config    ]; then rm -rf $(LOCAL_DIR)/include/config;    fi;
	$(Q)if [ -d $(LOCAL_DIR)/include/generated ]; then rm -rf $(LOCAL_DIR)/include/generated; fi;
	$(Q)if [ -d $(LOCAL_DIR)/output            ]; then rm -rf $(LOCAL_DIR)/output;            fi;
	$(Q)if [ -d $(LOCAL_DIR)/__install         ]; then rm -rf $(LOCAL_DIR)/__install;         fi;

install:
	$(Q)mkdir -p $(INSTALL_DIR)
	$(Q)cp -arf $(OUTPUT_DIR)/. $(INSTALL_DIR)

init: $(version_h)
	$(Q)mkdir -p $(OUTPUT_DIR);
	$(Q)mkdir -p include/config include/generated
	$(Q)$(LOCAL_DIR)/scripts/kconfig/Kconfiglib/genconfig.py --sync-dep include/config --header-path include/generated/autoconf.h

oldconfig:
	$(Q)$(LOCAL_DIR)/scripts/kconfig/Kconfiglib/oldconfig.py

%_defconfig:
	$(Q)$(LOCAL_DIR)/scripts/kconfig/Kconfiglib/defconfig.py --kconfig Kconfig configs/$@

menuconfig:
	$(Q)mkdir -p include/config include/generated
	$(Q)$(LOCAL_DIR)/scripts/kconfig/Kconfiglib/menuconfig.py Kconfig

savedefconfig:
	$(Q)$(LOCAL_DIR)/scripts/kconfig/Kconfiglib/savedefconfig.py --kconfig Kconfig --out defconfig

$(version_h):
	$(Q)$(call filechk,version.h)