#!/bin/sh -e

# build
#	Simple wiringPi build and install script
#
#	Copyright (c) 2012-2015 Gordon Henderson
#################################################################################
# This file is part of wiringPi:
#	A "wiring" library for the Raspberry Pi
#
#    wiringPi is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Lesser General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    wiringPi is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Lesser General Public License for more details.
#
#    You should have received a copy of the GNU Lesser General Public License
#    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
#################################################################################
#
# wiringPi is designed to run on a Raspberry Pi only.
#	However if you're clever enough to actually look at this script to
#	see why it's not building for you, then good luck.
#
#	To everyone else: Stop using cheap alternatives. Support the
#	Raspberry Pi Foundation	as they're the only ones putting money
#	back into education!
#################################################################################

sudo=${WIRINGPI_SUDO-sudo}
make="make -j $(( $(nproc) + 1 ))"
hardware=$(fgrep -a Hardware /proc/cpuinfo | head -1 | awk '{ printf("%s %s %s\n", $3, $4, $5) }' | xargs)
[ "$hardware",, != *"odroid"* ] \
  && [ -f "/sys/firmware/devicetree/base/model" ] \
  && hardware=$(cat /sys/firmware/devicetree/base/model)

check_make_ok() {
  if [ $? != 0 ]; then
    echo ""
    echo "Make Failed..."
    echo "Please check the messages and fix any problems. If you're still stuck,"
    echo "then please email all the output and as many details as you can to"
    echo "  projects@drogon.net"
    echo ""
    exit 1
  fi
}

configure_gpiomem() {
  [ $(env | grep DEB_BUILD | wc -l) -ne 0 ] && return

  GPIOMEM="/dev/gpiomem"

  if [ -z $1 ] && [ "$(stat -c "%a %G" "$GPIOMEM")" != "660"*"odroid" ]; then
    echo "Configure /dev/gpiomem"
    case "$(echo $hardware | tr [:upper:] [:lower:])" in
      *xu4)
        $sudo cp -f udev/rules.d/99-odroid-wiringpi-exynos.rules /etc/udev/rules.d/
        ;;
      *c|*c1|*c2)
        $sudo cp -f udev/rules.d/99-odroid-wiringpi-meson.rules /etc/udev/rules.d/
        ;;
      *n2|*c4)
        $sudo cp -f udev/rules.d/99-odroid-wiringpi-aml.rules /etc/udev/rules.d/
        ;;
      *)
        echo "This system seems not ODROID"
        ;;
    esac

    echo "Reload udev..."
    [ -x "$(command -v udevadm)" ] \
      && $sudo udevadm trigger \
      || echo "udevadm not found. Please reboot to take effect"
  elif [ "$1" = "uninstall" ]; then
    echo "Deconfigure /dev/gpiomem"
    $sudo rm -f /etc/udev/rules.d/99-odroid-wiringpi-*
  else
    echo "Not found $GPIOMEM"
    echo "You will not be able to use WiringPi without root permission"
  fi
}

install() {
  echo "wiringPi Build script"
  echo "====================="
  echo

  echo
  echo "WiringPi Library"
  cd wiringPi
  if [ x$1 = "xstatic" ]; then
    $make static
    check_make_ok
    $sudo $make install-static
  else
    $make
    check_make_ok
    $sudo $make install
  fi
  check_make_ok

  echo
  echo "GPIO Utility"
  cd ../gpio
  $make
  check_make_ok
  $sudo $make install
  check_make_ok

  echo
  cd ..
  configure_gpiomem

  echo
  echo All Done.
  echo ""
  echo "NOTE: To compile programs with wiringPi, you need to add:"
  echo "    -lwiringPi"
  echo "  to your compile line(s)."
  echo ""
}

uninstall() {
  cd wiringPi
  echo -n "wiringPi: " ; $sudo $make uninstall
  cd ../gpio
  echo -n "gpio:     " ; $sudo $make uninstall
  cd ..
  configure_gpiomem uninstall
  echo
}

clean() {
  cd wiringPi
  echo -n "wiringPi:   "	; $make clean
  cd ../gpio
  echo -n "gpio:       "	; $make clean
  cd ../examples
  echo -n "examples:   "	; $make clean
  cd ..
}

if [ x$1 = "xclean" ]; then
  clean
  exit
fi

if [ x$1 = "xuninstall" ]; then
  uninstall
  exit
fi

if [ x$1 != "x" ]; then
  echo "Usage: $0 [clean | uninstall]"
  exit 1
fi

uninstall; clean; install