build

#!/bin/bash

# My custom bash script for building kernel and modules :)
# github.com/ElectryDev

#
# Options
#
DEFCONFIG=kingdom_defconfig
THREADS=4

ARCH=arm
SUBARCH=${ARCH}

PAGE_SIZE=2048

TOOLCHAIN_PATH=~/android/toolchains/arm-linux-androideabi-4.9/bin/arm-linux-androidkernel-
TOOLS_PATH=~/bin

BOOT_PATH=arch/${ARCH}/boot
BOOTFILES_PATH=bootfiles
DTCSCRIPTS_PATH=scripts/dtc
OUTPUT_PATH=out

#
# Colored output
#
COLOR="\e[44m\e[97m"
DEFCOLOR="\e[49m\e[39m"
ACTCOLOR="\e[45m\e[97m"
ERRCOLOR="\e[41m\e[97m"

#
# Functions
#
function MakeClean() {
	echo -e "${COLOR}>> Cleaning...${DEFCOLOR}"
	make clean
}

function MakeConfig() {
	echo -e "${COLOR}>> Writing .config according to ${DEFCONFIG}...${DEFCOLOR}"
	make ${DEFCONFIG}
}

function MakeSilent() {
	echo -e "${COLOR}>> Building kernel silently...${DEFCOLOR}"

	DATE_START=$(date +"%s")

	if [ $(make -j${THREADS} | tail -n 10) == *failed* ]; then
		SUCCESS=false
	else
		SUCCESS=true
	fi

	DATE_END=$(date +"%s")
	DIFF=$((${DATE_END} - ${DATE_START}))

	if [ ${SUCCESS} = false ]
	then
		echo -e "${ERRCOLOR}>> Build FAILED in $((${DIFF} / 60)) minute(s) and $((${DIFF} % 60)) seconds.${DEFCOLOR}"
		exit
	else
		echo -e "${COLOR}>> Build completed in $((${DIFF} / 60)) minute(s) and $((${DIFF} % 60)) seconds.${DEFCOLOR}"
	fi
	
}

function Make() {
	echo -e "${COLOR}>> Building kernel...${DEFCOLOR}"

	DATE_START=$(date +"%s")

	make -j${THREADS}

	DATE_END=$(date +"%s")
	DIFF=$((${DATE_END} - ${DATE_START}))

	echo -e "${COLOR}>> Build completed in $((${DIFF} / 60)) minute(s) and $((${DIFF} % 60)) seconds.${DEFCOLOR}"
	echo -e "${ACTCOLOR}>> Please check if there was an error!${DEFCOLOR}"
}

function Cleanup() {
	echo -e "${COLOR}>> Cleaning up...${DEFCOLOR}"

	# Create the out directory (if not exists)
	mkdir -p ${OUTPUT_PATH}/ &> /dev/null
	mkdir -p ${OUTPUT_PATH}/modules &> /dev/null

	# Clean the out directory
	rm ${OUTPUT_PATH}/* &> /dev/null
	rm -r ${OUTPUT_PATH}/modules/* &> /dev/null

	# Clean the bootfiles directory
	rm ${BOOTFILES_PATH}/dt.img &> /dev/null
	rm ${BOOTFILES_PATH}/kernel &> /dev/null
}

function MakeBootImg() {
	echo -e "${COLOR}>> Copying zImage > ${BOOTFILES_PATH}/kernel${DEFCOLOR}"
	cp ${BOOT_PATH}/zImage ${BOOTFILES_PATH}/kernel

	echo -e "${COLOR}>> Creating dt.img${DEFCOLOR}"
	${TOOLS_PATH}/dtbToolCM -s ${PAGE_SIZE} -o ${BOOTFILES_PATH}/dt.img -p ${DTCSCRIPTS_PATH}/ ${BOOT_PATH}/ | tail -n 3

	echo -e "${COLOR}>> Creating boot.img${DEFCOLOR}"
	${TOOLS_PATH}/mkboot ${BOOTFILES_PATH} ${OUTPUT_PATH}/boot.img | tail -n 2
}

function CopyModules() {
	echo -e "${COLOR}>> Copying modules...${DEFCOLOR}"

	find . -name "*.ko" -exec cp {} ${OUTPUT_PATH}/modules/ \; &> /dev/null
}



#
# Begin
#
export USE_CCACHE=1

export ARCH=${ARCH}
export SUBARCH=${SUBARCH}
export CROSS_COMPILE=${TOOLCHAIN_PATH}

echo -e "${COLOR}>> Welcome!${DEFCOLOR}"
echo -e "${ACTCOLOR}>> Please select an option:${DEFCOLOR}"
echo -e "${DEFCOLOR}      c = make clean and build kernel${DEFCOLOR}"
echo -e "${DEFCOLOR}      k = build kernel${DEFCOLOR}"
echo -e "${DEFCOLOR}      s = build kernel silently${DEFCOLOR}"
echo -e "${DEFCOLOR}      q = quit${DEFCOLOR}"
echo ""

read -p "Your choice: " ANSWER
	case $ANSWER in
		c*|C*)
			Cleanup
			MakeClean
			MakeConfig
			Make

			echo ""
			echo -e "${ACTCOLOR}>> Do you want to create boot.img?${DEFCOLOR}"
			read -p "(y = yes, n = no):" BTANS
				case $BTANS in
					y*|Y*)
						MakeBootImg
					;;
				esac

			echo -e "${COLOR}>> Finished!${DEFCOLOR}"
		;;

		s*|S*)
			Cleanup
			MakeConfig
			MakeSilent
			MakeBootImg
			CopyModules
			echo -e "${COLOR}>> Finished!${DEFCOLOR}"
		;;

		k*|K*)
			Cleanup
			MakeConfig
			Make

			echo ""
			echo -e "${ACTCOLOR}>> Do you want to create boot.img?${DEFCOLOR}"
			read -p "(y = yes, n = no):" BTANS
				case $BTANS in
					y*|Y*)
						MakeBootImg
					;;
				esac

			echo -e "${COLOR}>> Finished!${DEFCOLOR}"
		;;

		*)
			echo -e "${COLOR}>> Exiting...${DEFCOLOR}"
		;;
	esac