configure

#!/bin/bash

env_clean(){
for i in DIR MAJOR MINOR OS RELEASE FIRST_DIGIT SECOND_DIGIT EXTRA_DIGIT CONCURRENCY_LEVEL FFDECSA_EXTRA FFFAIL CX23885 VERSION CONFIG
do
if ! [ -z ${i+x} ]; then
  unset $i
fi
done
}

die(){
    echo -en "
\E[1;33;44m$1, aborting...\E[0m

"
    env_clean
    exit 1
}

die_unknown(){
    echo -en "
\E[1;33;44mUnknown option \"$1\".

run ./configure --help for valid options\E[0m

"
    env_clean
    exit 1
}

_patch(){
if ! [ "$?" -eq 0 ]; then
  echo "
Could not apply the patch.
Aborting...
"
  env_clean
  exit 1
fi
}

confirmno(){
    # call with a prompt string or use a default
    read -r -p "${1:-Are you sure? [y/N]} " response
    case $response in
        [yY][eE][sS]|[yY]) 
            true
            ;;
        *)
            false
            ;;
    esac
}

confirmyes(){
    # call with a prompt string or use a default
    read -r -p "${1:-Continue? [Y/n]} " response
    case $response in
        [yY][eE][sS]|[yY]) 
            true
            ;;
        [nN][oO]|[nN])
            false
            ;;
        *)
            true
            ;;
    esac
}

show_help(){
  echo " Usage: ./configure --opt1=<opt> --opt2=<opt>"
  echo "                        "
  echo " Options: [default], if any, in brackets after option."
  echo "                        "
  echo " --help                 Print this message"
  echo "                        "
  echo " --vanilla=<bool>       Specify a the vanilla kernel version you"
  echo "                        want to compile. Like --vanilla=4.1.8"
  echo "                        This disables the --stock= flag."
  echo "                        "
  echo " --headers=<opt>        [yes] no: do not install kernel headers package(s)."
  echo "                        "
  echo " --adapters=<opt>       [16] Set max number of adapters that are allowed,"
  echo "                        twice the number of your physical adapters is needed."
  echo "                        "
  echo " --update=<opt>         [yes] no: don't auto-update or clean this repo."
  echo "                        "
  echo "                        "
  echo " --debug=<opt>          [no] yes: pause to review (almost) each and every step."
  echo "                        "
  echo " --firmware=<opt>       [yes] no: don't install the included firmware files."
  echo "                        "
  echo " --clean=<opt>          [no] yes: just clean and update the repo and exit."
  echo "                        "
  echo " --user=<opt>           [tycho] state your username."
  echo "                        "
  echo " --big=<opt>            [no] do localmodconfig, yes=compile a full blown kernel."
  echo "                        "
  echo " --saa=<opt>            [yes] no=build without saa716x driver."
  echo "                        "
  exit 0
}

stock_opt="yes"
vanilla_opt=""
headers_opt="yes"
adapters_opt="16"
update_opt="yes"
debug_opt="no"
firmware_opt="yes"
clean_opt="no"
user_opt="tycho"
next_opt="no"
big_opt="no"
saa_opt="yes"

for opt do
  optval="${opt#*=}"
  case "$opt" in
  --help) show_help
  ;;
  --vanilla=*) stock_opt="no"; vanilla_opt="$optval"
  ;;
  --headers=*) headers_opt="$optval"
  ;;
  --adapters=*) adapters_opt="$optval"
  ;;
  --update=*) update_opt="$optval"
  ;;
  --debug=*) debug_opt="$optval"
  ;;
  --firmware=*) firmware_opt="$optval"
  ;;
  --clean=*) clean_opt="$optval"
  ;;
  --user=*) user_opt="$optval"
  ;;
  --big=*) big_opt="$optval"
  ;;
  --saa*) saa_opt="$optval"
  ;;
  *)
  die_unknown $opt
  ;;
  esac
done

DIR=`pwd`

# Check git status
if [ "x$update_opt" = "xyes" ]; then
  rm -rf linux* > /dev/null 2>&1
  rm -rf media* > /dev/null 2>&1
  rm -rf descrambler > /dev/null 2>&1
  git clean -xfd > /dev/null
  git reset --hard HEAD > /dev/null
  git remote update > /dev/null 2>&1
  if ! [ "$?" -eq 0 ]; then
    echo -en "
\E[1;33;44m
###################################

Error(s) encountered while updating

the status from remote git repo.

Aborting...

####################################
\E[0m

"
    env_clean
    exit 1
  fi
  LOCAL=$(git rev-parse @{0})
  REMOTE=$(git rev-parse @{u})
  BASE=$(git merge-base @{0} @{u})

  if [ $LOCAL = $REMOTE ]; then
    GITSTATUS="0"    # "Up-to-date"
  elif [ $LOCAL = $BASE ]; then
    GITSTATUS="1"    # "Need to pull"
  elif [ $REMOTE = $BASE ]; then
    GITSTATUS="2"    # "Need to push"
  else
    GITSTATUS="3"    # "Diverged"
  fi
  if [ "$GITSTATUS" -eq "0" ]; then
    echo "
Your local clone is clean and up-to-date
"
    if [ "x$debug_opt" = "xno" ]; then
      sleep 3
    else
      confirmyes
      if ! [ "$?" -eq 0 ]; then
        env_clean
        exit 0
      fi
    fi
  elif [ "$GITSTATUS" -eq "1" ]; then
    echo "
Going to sync your local clone with updated remote repo.

"
    sleep 3
    git pull > /dev/null
    if ! [ "$?" -eq 0 ]; then
      echo -en "
\E[1;33;44m
###################################

Error(s) encountered while syncing

local with remote git repo

Aborting...

####################################
\E[0m

"
      env_clean
      exit 1
    else
      echo -en "

############################################################

Synced with remote repo successfully! Please rerun

./configure to complete installation of saa716x drivers.

Arrow up and enter will get you there.

############################################################


"
      env_clean
      exit 0
    fi
  elif [ "$GITSTATUS" -eq 2 -o "$GITSTATUS" -eq 3 ]; then
    echo -en "
\E[1;33;44m
######################################

Your local clone cannot be synced with

remote repo. Please get a fresh clone.

Aborting...

######################################
\E[0m

"
    env_clean
    exit 1
  fi    
fi

if [ "x$clean_opt" = "xyes" ]; then
  exit 0
fi

# Make sure that we are running as root
if ! echo "$(whoami)" | grep "root" > /dev/null 2>&1; then
  echo -en "
\E[1;33;44m
You should run as root.

Aborting...
\E[0m

"
  env_clean
  exit 0
fi

# Get info on what distro we are running
apt-get install lsb-release -y > /dev/null 2>&1
if [ -f /usr/bin/lsb_release ]; then
  OS=$( lsb_release -si )
  RELEASE=$( lsb_release -sc )
fi

# Check for a supported kernelversion
if ! [ "x$vanilla_opt" = "x" ]; then
  FIRST_DIGIT=$(echo "$vanilla_opt" | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n1 | awk 'NR==1')
  SECOND_DIGIT=$(echo "$vanilla_opt" | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n2 | awk 'NR==2')
  EXTRA_DIGIT="0"
  VERSION="$FIRST_DIGIT$SECOND_DIGIT"
  chars=`echo -n $SECOND_DIGIT  | wc -c`
  if ! [ "$chars" -eq 2 ]; then
    VERSION="$FIRST_DIGIT$EXTRA_DIGIT$SECOND_DIGIT"
  fi
fi

if [ "$VERSION" -lt 510 ]; then
echo -en "
You requested a build for a $vanilla_opt kernel.

Minimum supported kernelseries is 5.10.x

Aborting...
"
  env_clean
  exit 0
fi

# Check for proper use of --stock= flag
if ! [ "$OS" = "Debian" ]; then
  if [ "x$stock_opt" = "xyes" ]; then
    echo "

Compiling a distro's stock kernel is supported

in Debian only. You can compile the

v4l tree or a vanilla kernel. Aborting....

"
    env_clean
    exit 0
  fi
fi

# Get build-deps, Debian only.
if [ "$OS" = "Debian" -o "$OS" = "Devuan" ]; then
  if ! dpkg-query -l build-essential | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency build-essential, marking for installation.

"
    apt-get install build-essential -y || die "Error installing dependency build-essential"
  fi
  if ! dpkg-query -l asciidoc | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency asciidoc, marking for installation.

"
    apt-get install asciidoc --no-install-recommends -y || die "Error installing dependency asciidoc"
  fi
  if ! dpkg-query -l binutils-dev | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency binutils-dev, marking for installation.

"
    apt-get install binutils-dev --no-install-recommends -y || die "Error installing dependency binutils-dev"
  fi
  if ! dpkg-query -l bison | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency bison, marking for installation.

"
    apt-get install bison --no-install-recommends -y || die "Error installing dependency bison"
  fi
  if ! dpkg-query -l bc | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency bc, marking for installation.

"
    apt-get install bc --no-install-recommends -y || die "Error installing dependency bc"
  fi
  if ! dpkg-query -l devscripts | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency devscripts, marking for installation.

"
    apt-get install devscripts --no-install-recommends -y || die "Error installing dependency devscripts"
  fi
  if ! dpkg-query -l libelf-dev | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libelf-dev, marking for installation.

"
    apt-get install libelf-dev --no-install-recommends -y || die "Error installing dependency libelf-dev"
  fi
  if ! dpkg-query -l fakeroot | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency fakeroot, marking for installation.

"
    apt-get install fakeroot --no-install-recommends -y || die "Error installing dependency fakeroot"
  fi
  if ! dpkg-query -l flex | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency flex, marking for installation.

"
    apt-get install flex --no-install-recommends -y || die "Error installing dependency flex"
  fi
  if ! dpkg-query -l initramfs-tools | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency initramfs-tools, marking for installation.

"
    apt-get install initramfs-tools --no-install-recommends -y || die "Error installing dependency initramfs-tools"
  fi
  if ! dpkg-query -l kernel-wedge | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency kernel-wedge, marking for installation.

"
    apt-get install kernel-wedge --no-install-recommends -y || die "Error installing dependency kernel-wedge"
    if [ "$OS" = "Debian" -o "$OS" = "Devuan" ]; then
      apt-get -t $RELEASE-backports install kernel-wedge --no-install-recommends -y > /dev/null 2>&1
      apt-get -t $RELEASE-backports install linux-base --no-install-recommends -y > /dev/null 2>&1
      apt-get -t $RELEASE-backports install irqbalance --no-install-recommends -y > /dev/null 2>&1
      apt-get -t $RELEASE-backports install firmware-linux-free --no-install-recommends -y > /dev/null 2>&1
    fi
  else
    if [ "$OS" = "Debian" -o "$OS" = "Devuan" ]; then
      apt-get -t $RELEASE-backports install kernel-wedge --no-install-recommends -y > /dev/null 2>&1
    fi
  fi
  if ! dpkg-query -l libdigest-sha-perl | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libdigest-sha-perl, marking for installation.

"
    apt-get install libdigest-sha-perl --no-install-recommends -y || die "Error installing dependency libdigest-sha-perl"
  fi
  if ! dpkg-query -l libfile-fcntllock-perl | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libfile-fcntllock-perl, marking for installation.

"
    apt-get install libfile-fcntllock-perl --no-install-recommends -y || die "Error installing dependency libfile-fcntllock-perl"
  fi
  if ! dpkg-query -l libproc-processtable-perl | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libproc-processtable-perl, marking for installation.

"
    apt-get install libproc-processtable-perl --no-install-recommends -y || die "Error installing dependency libproc-processtable-perl"
  fi
  if ! dpkg-query -l bin86 | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency bin86, marking for installation.

"
    apt-get install bin86 --no-install-recommends -y || die "Error installing dependency bin86"
  fi
  if ! dpkg-query -l makedumpfile | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency makedumpfile, marking for installation.

"
    apt-get install makedumpfile --no-install-recommends -y || die "Error installing dependency makedumpfile"
  fi
  if ! dpkg-query -l libncurses5 | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libncurses5, marking for installation.

"
    apt-get install libncurses5 --no-install-recommends -y || die "Error installing dependency libncurses5"
  fi
  if ! dpkg-query -l libncurses5-dev | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency libncurses5-dev, marking for installation.

"
    apt-get install libncurses5-dev --no-install-recommends -y || die "Error installing dependency libncurses5-dev"
  fi
  if ! dpkg-query -l patch | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency patch, marking for installation.

"
    apt-get install patch --no-install-recommends -y || die "Error installing dependency patch"
  fi
  if ! dpkg-query -l patchutils | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency patchutils, marking for installation.

"
    apt-get install patchutils --no-install-recommends -y || die "Error installing dependency patchutils"
  fi
  if ! dpkg-query -l rsync | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency rsync, marking for installation.

"
    apt-get install rsync --no-install-recommends -y || die "Error installing dependency rsync"
  fi
  if ! dpkg-query -l kmod | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency kmod, marking for installation.

"
    apt-get install kmod --no-install-recommends -y || die "Error installing dependency kmod"
  fi
  if ! dpkg-query -l g++ | grep "ii" > /dev/null 2>&1; then
    echo "
Missing dependency g++, marking for installation.

"
    apt-get install g++ --no-install-recommends -y || die "Error installing dependency g++"
  fi
  apt-get build-dep --no-install-recommends linux -y
  if ! [ "$?" -eq 0 ]; then
    echo "
Error(s) while installing build dependencies

Aborting...
"
    env_clean
    exit 1
  fi
fi

chown $user_opt:$user_opt -R `pwd`

#
# Get the source
#

# Debian
if [ "x$stock_opt" = "xyes" ]; then
  echo "
Going to download the kernel source.
"
  sleep 3
  su $user_opt -c "apt-get source linux -y" || die "Error(s) while fetching Debian Linux source"
  cd linux-*
  rm -f *.orig.tar.xz
  rm -f *debian.tar.xz
  rm -f *.dsc
  make clean && make mrproper
    FIRST_DIGIT=$(echo `pwd` | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n1 | awk 'NR==1')
  SECOND_DIGIT=$(echo `pwd` | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n2 | awk 'NR==2')
  EXTRA_DIGIT="0"
  VERSION="$FIRST_DIGIT$SECOND_DIGIT"
  chars=`echo -n $SECOND_DIGIT  | wc -c`
  if ! [ "$chars" -eq 2 ]; then
    VERSION="$FIRST_DIGIT$EXTRA_DIGIT$SECOND_DIGIT"
  fi
  
  if [ "$VERSION" -lt 510 ]; then
    echo "
Minimum supported kernel version is 5.10.x.
Aborting...
"
    exit 1
  fi
fi

# Vanilla
MAJOR=$(echo "$vanilla_opt" | cut -d'.' -f1)
if [ "x$vanilla_opt" != "x" ]; then
  echo "
Going to download the kernel source.
"
  sleep 3
  if [ "x$next_opt" = "xno" ]; then
    if echo "$vanilla_opt" | grep "rc" > /dev/null 2>&1; then
      wget https://git.kernel.org/torvalds/t/linux-$vanilla_opt.tar.gz || die "Error(s) while fetching Linux source"
    else
      wget https://mirrors.edge.kernel.org/pub/linux/kernel/v$MAJOR.x/linux-$vanilla_opt.tar.xz || die "Error(s) while fetching Linux source"
    fi
    if echo "$vanilla_opt" | grep "rc" > /dev/null 2>&1; then
      tar -xzf linux-$vanilla_opt.tar.gz
    else
      tar -xJf linux-$vanilla_opt.tar.xz
    fi
    cd linux-$vanilla_opt
    make clean && make mrproper
    if [ "x$debug_opt" = "xyes" ]; then
      echo "
Source is downloaded.
"
      confirmyes
      if ! [ "$?" -eq 0 ]; then
        env_clean
        exit 0
      fi
    fi
  fi
fi

#
# Patch the source
#

# Common (stock and vanilla kernels)
FIRST_DIGIT=$(echo `pwd` | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n1 | awk 'NR==1')
SECOND_DIGIT=$(echo `pwd` | awk -F/ '{print $NF}' | grep -o '[[:digit:]]\+' | head -n2 | awk 'NR==2')
EXTRA_DIGIT="0"
VERSION="$FIRST_DIGIT$SECOND_DIGIT"
chars=`echo -n $SECOND_DIGIT  | wc -c`
if ! [ "$chars" -eq 2 ]; then
VERSION="$FIRST_DIGIT$EXTRA_DIGIT$SECOND_DIGIT"
fi

# saa716x patch
if [ "x$saa_opt" = "xyes" ]; then
  mkdir drivers/media/pci/saa716x
  cp -f ../drivers/media/pci/saa716x/* drivers/media/pci/saa716x/
  patch -p0 < ../Kconfig-4.10.patch
  _patch
  if [ "x$debug_opt" = "xyes" ]; then
    echo "
saa716x added, Kconfig patched for saa716x.
"
    confirmyes
    if ! [ "$?" -eq 0 ]; then
      env_clean
      exit 0
    fi
  fi
  patch -p0 < ../Makefile-4.2.patch
  _patch
  if [ "x$debug_opt" = "xyes" ]; then
    echo "
Makefile is patched for saa716x.
"
    confirmyes
    if ! [ "$?" -eq 0 ]; then
      env_clean
    exit 0
    fi
  fi  
fi

patch -p0 < ../bootlog.patch
_patch
if [ "x$debug_opt" = "xyes" ]; then
  echo "
bootlog is fixed for ACPI errrors
"
  confirmyes
  if ! [ "$?" -eq 0 ]; then
  env_clean
  exit 0
  fi
fi

#
# Configure the source
#


# Vanilla and Stock
echo -en "
Going to configure your kernel.

"
if [ "x$big_opt" = "xyes" ]; then
  make oldconfig
else
  make localmodconfig
fi

ADAPTERS=$(cat .config | grep "CONFIG_DVB_MAX_ADAPTERS" | grep -o '[[:digit:]]\+')
if ! [ "$ADAPTERS" = "$adapters_opt" ]; then
  sed -i "s/CONFIG_DVB_MAX_ADAPTERS=$ADAPTERS/CONFIG_DVB_MAX_ADAPTERS=$adapters_opt/" .config
fi
sed -i 's/CONFIG_DEBUG_INFO=y/# CONFIG_DEBUG_INFO is not set/' .config
sed -i "s/debian\/certs\/debian-uefi-certs.pem/\"\"/" .config
sed -i "s/CONFIG_MODULE_SIG_KEY=\".*\"/CONFIG_MODULE_SIG_KEY=\"certs\/signing_key.pem\"/" .config
sed -i 's/CONFIG_BUILD_SALT=\".*\"/CONFIG_BUILD_SALT=\"\"/' .config
if [ "x$debug_opt" = "xyes" ]; then
    echo "
Kernel configured.
"
  confirmyes
  if ! [ "$?" -eq 0 ]; then
    env_clean
    exit 0
  fi
fi

#
# Compile the source
#


make -j3 deb-pkg LOCALVERSION=-custom | tee ../buildlog_vanilla_$vanilla_opt

#
# Install the result
#


if [ "x$debug_opt" = "xyes" ]; then
  echo "
Going to install your kernel.
"
  confirmyes
  if ! [ "$?" -eq 0 ]; then
    env_clean
    exit 0
  fi
fi
  
cd $DIR

if [ "x$headers_opt" = "xno" ] ; then
  dpkg -i linux-image-* && sleep 2
else
  dpkg -i linux-image* linux-headers* linux-libc-dev*
fi
if [ "$?" -eq 0 ]; then
  if [ "x$headers_opt" = "xyes" ]; then
    echo -en "
Your kernel and headers are installed.

"
  else
    echo -en "
Your kernel is installed.

"
  fi
fi

if [ "x$firmware_opt" = "xyes" ]; then
  # Install the firmware
  if ! [ -f /lib/firmware/dvb-tuner-si2158-a20-01.fw ] > /dev/null 2>&1; then
    echo "
Do you want to install included firmware into /lib/firmware?

"
    confirmyes "Yes, please do. [Y/n]"
    if [ "$?" -eq 0 ]; then   
      if [ ! -d /lib/firmware ]; then
        mkdir /lib/firmware
      fi
      cp -f firmware/* /lib/firmware/
    fi
  fi
fi
env_clean