#!/bin/bash
#Updated: 18 August 2016, by brindosch
#Just use a clean Ubunut 14.04 and run this script
##############
#ON TARGET
#--------------
#sudo apt-get install qtbase5-dev libqt5serialport5-dev libusb-1.0-0-dev python-dev libxrender-dev libavahi-core-dev libavahi-compat-libdnssd-dev python-dev rsync
#############

#ON HOST
#---------
sudo apt-get update
sudo apt-get upgrade
#TO-DO verify what is really required
#blacklist: protobuf-compiler lib32z1 lib32ncurses5 lib32bz2-1.0 zlib1g-dev
sudo apt-get -qq -y install git rsync cmake build-essential qtbase5-dev libqt5serialport5-dev libusb-1.0-0-dev python-dev libxrender-dev libavahi-core-dev libavahi-compat-libdnssd-dev

echo 'PATH=$PATH:$HOME/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin' >> .bashrc
#---------


export TARGET_IP=192.168.0.103
export TARGET_USER=pi

export RASCROSS_DIR="$HOME/raspberrypi"
export ROOTFS_DIR="$RASCROSS_DIR/rootfs"
export HYPERION_DIR="$HOME/hyperion"
#export IMX6_DIR="$HOME/hummingboard"
export TOOLCHAIN_FILE="$HYPERION_DIR/Toolchain-RaspberryPi.cmake"

export NATIVE_BUILD_DIR="$HYPERION_DIR/build"
export TARGET_BUILD_DIR="$HYPERION_DIR/build-rpi"

mkdir -p "$ROOTFS_DIR"
rsync -rl --delete-after --copy-unsafe-links $TARGET_USER@$TARGET_IP:/{lib,usr} "$ROOTFS_DIR"

######## RPi specific #########

mkdir -p "$RASCROSS_DIR/firmware"
git clone --depth 1 https://github.com/raspberrypi/firmware.git "$RASCROSS_DIR/firmware"
ln -s "$RASCROSS_DIR/firmware/hardfp/opt" "$ROOTFS_DIR/opt"

git clone --depth 1 git://github.com/raspberrypi/tools.git "$RASCROSS_DIR/tools"

##### End of RPi specific ######

######## NOT TESTED ONLY INFOs #########
######## IMX6 specific #########
#export IMX6_DIR="$HOME/hummingboard"
#mkdir -p "$IMX6_Dir"
#cd "$IMX6_Dir"
#wget https://launchpad.net/linaro-toolchain-binaries/trunk/2013.10/+download/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux.tar.bz2
#tar -xvjf gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux.tar.bz2
#cd
##### End of IMX6 specific ######
######## NOT TESTED     #########

# get the Hyperion sources
git clone --recursive https://github.com/hyperion-project/hyperion.ng.git "$HYPERION_DIR"

# do a native build (to build the protobuf compiler for the native platform)
mkdir -p "$NATIVE_BUILD_DIR"
cmake -DENABLE_DISPMANX=OFF --build "$NATIVE_BUILD_DIR" "$HYPERION_DIR"

# do the cross build 
# specify the protoc export file to import the protobuf compiler from the native build
mkdir -p "$TARGET_BUILD_DIR"
cmake -DCMAKE_TOOLCHAIN_FILE="$TOOLCHAIN_FILE" -DIMPORT_PROTOC=$NATIVE_BUILD_DIR/protoc_export.cmake --build "$TARGET_BUILD_DIR" "$HYPERION_DIR"

#compile
cd "$HYPERION_DIR/bin"
chmod +x *
cp "$HYPERION_DIR/bin/create_all_releases.sh" "$HYPERION_DIR"
cd "$HYPERION_DIR"
./create_all_releases.sh

######END
#------------------------------------------------------------------------------
#These instructions are based on tvdzwan and on the guide given by:
#http://airwiki.ws.dei.polimi.it/index.php/Cross-compiling_for_the_RaspberryPi