#!/bin/bash

WGET=wget
TAR=tar
GZIP=gzip
BZIP2=bzip2
PATCH=patch
AUTOCONF=autoconf
MAKE=make
GIT=git
# The following are required by crosstool
BISON=bison
FLEX=flex

PACKAGES_DIR=packages
DOWNLOAD_PREFIX=http://www.loggytronic.com/dl/

FILE_MVPDEVFS=mvpdevfs-4.tar.gz

# Files used by the script packages
SOURCEFILES="crosstool-0.43.tar.gz linux-2.4.31.tar.bz2 busybox-1.00.tar.bz2 jpegsrc.v6b.tar.gz genext2fs-1.4.tar.gz"
# And files downloaded by crosstool:
SOURCEFILES+=" binutils-2.15.tar.bz2 glibc-2.2.5.tar.gz linux-2.6.8.tar.bz2 gcc-3.4.5.tar.bz2 glibc-linuxthreads-2.2.5.tar.gz"

set -e

# ----------------------------------------------

makeDir()
{
  if ! mkdir -p $1
  then
    echo "Error: could not create directory: $1"
    exit
  fi
}

downloadFile()
{
  if [ ! -r ${PACKAGES_DIR}/$1 -o ! -s ${PACKAGES_DIR}/$1 ]
  then
    if ! $WGET -O ${PACKAGES_DIR}/$1 ${DOWNLOAD_PREFIX}$1
    then
      echo "Error: could not download $1"
      exit
    fi
  fi
}

checkProg()
{
  if [ -x /bin/$1 ] || [ -x /usr/bin/$1 ]
  then
    return 0
  else
    echo "$1 not found in /bin or /usr/bin."
    exit 1
  fi
}

# The Start

echo
echo "VOMP Development Environment Setup Script (git version)"
echo

TOP=`pwd`

# Test for prerequisites

if [ -L /bin/sh ] && [ $(readlink /bin/sh) = dash ]
then
  echo "Your /bin/sh symlink links to dash which causes the crosstool build to fail."
  echo "Please point /bin/sh to another shell (bash works)."
  exit 1
fi

checkProg $WGET
checkProg $TAR
checkProg $GZIP
checkProg $BZIP2
checkProg $PATCH
checkProg $AUTOCONF
checkProg $MAKE
checkProg $GIT
checkProg $BISON
checkProg $FLEX

# Make directories

makeDir $PACKAGES_DIR

# Download files

downloadFile $FILE_MVPDEVFS

for i in $SOURCEFILES ; do
  downloadFile $i
done

# Build cross compiler

cd ${TOP}/crosstool
./autobuild

# Build kernels

cd ${TOP}/kernel
./autobuild

# Build busybox

cd ${TOP}/busybox
./autobuild

# Build JPEG

cd ${TOP}/jpeg
./autobuild

# Build kernel module

cd ${TOP}/lbox_border
./autobuild

# Get client and build for dongle

cd $TOP
$GIT clone http://git.vomp.tv/vompclient.git client
cd client
$MAKE release

# Build a dongle

cd ${TOP}/dongle
./autobuild

# Done

echo
echo "Done. A dongle should have been created as dongle/vomp-dongle"
echo "Optionally you can set-up an NFS root development environment by following the"
echo "MVP-Filesystem->DHCP->TFTP->NFS guide."
echo