#!/bin/sh

# raspi-hacks.SlackBuild
# Modifications for Slackware ARM on Raspberry Pi -- see README file for details
#
# Copyright 2012 David Spencer, Baildon, West Yorkshire, U.K.
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM="raspi-hacks"
VERSION=${VERSION:-2.1}
ARCH="arm"
BUILD=${BUILD:-1}
TAG=${TAG:-}

CWD=$(pwd)
TMP=${TMP:-/tmp}
OUTPUT=${OUTPUT:-/tmp}
PKG=$TMP/package-$PRGNAM

mkdir -p $TMP

rm -rf $PKG
mkdir -p $PKG/etc
mkdir -p $PKG/usr/lib
mkdir -p $PKG/install

cat $CWD/doinst.sh > $PKG/install/doinst.sh

# Serial port fixup
cat << EOF >> $PKG/install/doinst.sh
# inittab -- modify serial port entry 's0'
if grep -q '^s0:.*ttyS0' etc/inittab ; then
  sed -i \
    -e 's;^s0:12345:respawn:/sbin/agetty 115200 ttyS0 vt100\$;#s0:12345:respawn:/sbin/agetty -L ttyAMA0 9600 vt100;' \
    etc/inittab
fi

EOF

# Hardware clock fixup (1) rc.local
cat << EOF >> $PKG/install/doinst.sh
# rc.local -- set time from network
if ! grep -q sntp etc/rc.d/rc.local ; then
  echo '' >> etc/rc.d/rc.local
  echo "# Added by $PRGNAM-$VERSION-$ARCH-$BUILD$TAG" >> etc/rc.d/rc.local
  echo 'sntp -s pool.ntp.org >/dev/null &' >> etc/rc.d/rc.local
fi

EOF

# Hardware clock fixup (2) e2fsck.conf
cp $CWD/e2fsck.conf.new \
  $PKG/etc
cat << EOF >> $PKG/install/doinst.sh
# e2fsck.conf -- hardware clock fix
config etc/e2fsck.conf.new

EOF

# Hardware clock de-fixup :-)
cat << EOF >> $PKG/install/doinst.sh
# hwclock -- reinstate the original if moved by previous raspi-hacks
if [ -f sbin/hwclock.orig ]; then
  rm -f sbin/hwclock
  mv sbin/hwclock.orig sbin/hwclock
fi

EOF

# Tuning via /etc/sysctl.conf
cp $CWD/sysctl.conf.new \
  $PKG/etc
cat << EOF >> $PKG/install/doinst.sh
# sysctl.conf -- set vm.min_free_kbytes
config etc/sysctl.conf.new

EOF

# Build and install libcofi_rpi
(
  cd libcofi_rpi
  rm -f *.s *.o *.so
  make libcofi_rpi.so
)

mkdir -p $PKG/usr/lib
cp libcofi_rpi/libcofi_rpi.so \
  $PKG/usr/lib
chmod 644 $PKG/usr/lib/libcofi_rpi.so
rm -f \
  libcofi_rpi/*.s \
  libcofi_rpi/*.o \
  libcofi_rpi/*.so

mkdir -p $PKG/etc/profile.d
cp \
  libcofi_rpi/libcofi_rpi.sh.new \
  libcofi_rpi/libcofi_rpi.csh.new \
  $PKG/etc/profile.d
chmod 644 \
  $PKG/etc/profile.d/libcofi_rpi.sh.new \
  $PKG/etc/profile.d/libcofi_rpi.csh.new

cat << EOF >> $PKG/install/doinst.sh
# libcofi_rpi.sh -- activate replacement memcpy/memset
preserve_perms etc/profile.d/libcofi_rpi.sh.new
preserve_perms etc/profile.d/libcofi_rpi.csh.new

EOF

# Documentation
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  $CWD/README \
  $CWD/libcofi_rpi/README.libcofi_rpi \
  $PKG/usr/doc/$PRGNAM-$VERSION

# Finish off
cat $CWD/slack-desc > $PKG/install/slack-desc
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}