build.sh

#!/bin/bash

#set -e

DATE_POSTFIX=$(date +"%Y%m%d")

## Copy this script inside the kernel directory
KERNEL_DIR=$PWD
KERNEL_TOOLCHAIN=$ANDROIDDIR/kernel/prebuilts/aarch64-linux-gnu/bin/aarch64-linux-gnu-
CLANG_TOOLCHAIN=$ANDROIDDIR/kernel/prebuilts/clang-r353983e/bin/clang-9
KERNEL_DEFCONFIG=potter_defconfig
DTBTOOL=$KERNEL_DIR/Dtbtool/
ANY_KERNEL3_DIR=$KERNEL_DIR/AnyKernel3/
FINAL_KERNEL_ZIP=Optimus_Drunk_Potter-$DATE_POSTFIX-HMP.zip
# Speed up build process
MAKE="./makeparallel"

BUILD_START=$(date +"%s")
blue='\033[0;34m'
cyan='\033[0;36m'
yellow='\033[0;33m'
red='\033[0;31m'
nocol='\033[0m'

echo "**** Setting Toolchain ****"
export CROSS_COMPILE=$KERNEL_TOOLCHAIN
export ARCH=arm64
export SUBARCH=arm64
export KBUILD_COMPILER_STRING="Clang Version 9.0.4"

# Clean build always lol
echo "**** Cleaning ****"
mkdir -p out
make O=out clean

echo "**** Kernel defconfig is set to $KERNEL_DEFCONFIG ****"
echo -e "$blue***********************************************"
echo "          BUILDING KERNEL          "
echo -e "***********************************************$nocol"
make $KERNEL_DEFCONFIG O=out
make -j$(nproc --all) CC=$CLANG_TOOLCHAIN CLANG_TRIPLE=aarch64-linux-gnu- O=out

echo -e "$blue***********************************************"
echo "          GENERATING DT.img          "
echo -e "***********************************************$nocol"
$DTBTOOL/dtbToolOptimus -o $KERNEL_DIR/out/arch/arm64/boot/dtb -s 2048 -p $KERNEL_DIR/out/scripts/dtc/ $KERNEL_DIR/out/arch/arm64/boot/dts/qcom/

echo "**** Verify Image.gz & dtb ****"
ls $KERNEL_DIR/out/arch/arm64/boot/Image.gz
ls $KERNEL_DIR/out/arch/arm64/boot/dtb

#Anykernel 2 time!!
echo "**** Verifying AnyKERNEL3 Directory ****"
ls $ANY_KERNEL3_DIR
echo "**** Removing leftovers ****"
rm -rf $ANY_KERNEL3_DIR/dtb
rm -rf $ANY_KERNEL3_DIR/Image.gz
rm -rf $ANY_KERNEL3_DIR/$FINAL_KERNEL_ZIP

echo "**** Copying Image.gz ****"
cp $KERNEL_DIR/out/arch/arm64/boot/Image.gz $ANY_KERNEL3_DIR/
echo "**** Copying dtb ****"
cp $KERNEL_DIR/out/arch/arm64/boot/dtb $ANY_KERNEL3_DIR/

echo "**** Time to zip up! ****"
cd $ANY_KERNEL3_DIR/
zip -r9 $FINAL_KERNEL_ZIP * -x README $FINAL_KERNEL_ZIP
cp $KERNEL_DIR/AnyKernel3/$FINAL_KERNEL_ZIP $ANDROIDDIR/kernel/$FINAL_KERNEL_ZIP

echo "**** Good Bye!! ****"
cd $KERNEL_DIR
rm -rf arch/arm64/boot/dtb
rm -rf $ANY_KERNEL3_DIR/$FINAL_KERNEL_ZIP
rm -rf AnyKernel3/Image.gz
rm -rf AnyKernel3/dtb
rm -rf $KERNEL_DIR/out/

BUILD_END=$(date +"%s")
DIFF=$(($BUILD_END - $BUILD_START))
echo -e "$yellow Build completed in $(($DIFF / 60)) minute(s) and $(($DIFF % 60)) seconds.$nocol"