#!/bin/bash

set -o errtrace

readonly LOCAL_PATH=external/e2fsprogs
readonly BUILD_DIR=${LOCAL_PATH}/build
readonly BUILD_ROOT=$(pwd)

cleanup() {
  echo "Removing ${BUILD_ROOT}/${BUILD_DIR}"
  rm -rf ${BUILD_ROOT}/${BUILD_DIR}
}
trap 'echo Fatal error: script $0 aborting at line $LINENO, command \"$BASH_COMMAND\" returned $?' ERR
trap 'cleanup; exit 1' ERR EXIT

if [ ! -d "${LOCAL_PATH}" ]; then
  echo "Must be run from Eureka root"
  exit 1
fi

#TODO(mengyu): Add supports for other toolchains if needed.

readonly armv7a_CC=${BUILD_ROOT}/prebuilt/toolchain/armv7a/bin/armv7a-cros-linux-gnueabihf-gcc
readonly HOST_ARMV7=armv7a-cros-linux-gnueabihf

readonly aarch64_CC=${BUILD_ROOT}/prebuilt/toolchain/aarch64/bin/aarch64-cros-linux-gnu-gcc
readonly HOST_ARMV8=aarch64-cros-linux-gnu

build_e2fsprogs() {
  export TARGET_ARCH_VARIANT=$1
  export TARGET_CC=$2
  export HOST=$3

  rm -rf ${BUILD_DIR}
  mkdir ${BUILD_DIR}

  pushd ${BUILD_DIR}
  ../configure --host=${HOST} CC=${TARGET_CC} CFLAGS='-g -fPIC -O2'
  make -j50
  popd

  cp ${BUILD_DIR}/e2fsck/e2fsck ${LOCAL_PATH}/prebuilt/${TARGET_ARCH_VARIANT}
  if [ "$TARGET_ARCH_VARIANT" = "armv7-a" ]; then
    cp ${BUILD_DIR}/resize/resize2fs ${LOCAL_PATH}/prebuilt/${TARGET_ARCH_VARIANT}
  elif [ "$TARGET_ARCH_VARIANT" = "armv8-a-neon" ]; then
    cp ${BUILD_DIR}/misc/badblocks ${LOCAL_PATH}/prebuilt/${TARGET_ARCH_VARIANT}
    cp ${BUILD_DIR}/misc/mke2fs ${LOCAL_PATH}/prebuilt/${TARGET_ARCH_VARIANT}
  fi
}

build_e2fsprogs armv7-a ${armv7a_CC} ${HOST_ARMV7}

build_e2fsprogs armv8-a-neon ${aarch64_CC} ${HOST_ARMV8}