#!/bin/bash

# This script builds Skia for ChromeOS by mounting the Skia checkout inside a
# chroot contained within an existing ChromeOS checkout, entering the chroot,
# and running the build_skia_in_chroot script.

MAKE_FLAGS=$@
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

if [ $(uname) != "Linux" ]; then
    echo "ERROR: Can only build for ChromeOS on Linux."
    exit 1
fi

if [ -z "${CHROMEOS_ROOT}" ]; then
    echo "ERROR: Please set CHROMEOS_ROOT to the root of your ChromeOS checkout."
    exit 1
fi

CHROMEOS_CHROOT="${CHROMEOS_ROOT}/chroot"

# Where the Skia code will pretend to live inside the chroot.
SKIA_CHROOT_PARENT="/usr/local"
SKIA_CHROOT_DIR="${SKIA_CHROOT_PARENT}/skia"

echo "Mounting Skia source at ${SKIA_CHROOT_DIR} in chroot."
sudo mkdir -p ${CHROMEOS_CHROOT}${SKIA_CHROOT_DIR}
sudo mount $(pwd) ${CHROMEOS_CHROOT}${SKIA_CHROOT_DIR} -o bind

echo "Compiling in chroot: ${CHROMEOS_CHROOT}"
sudo ${CHROMEOS_ROOT}/chromite/bin/cros_sdk -- /bin/sh -c "cd ${SKIA_CHROOT_DIR}; platform_tools/chromeos/bin/build_skia_in_chroot $MAKE_FLAGS"
returnVal=$?

sudo umount ${CHROMEOS_CHROOT}${SKIA_CHROOT_DIR}

if [ "${returnVal}" != "0" ]
then
  exit 1;
fi