#!/bin/sh

# Slackware build script for tp_smapi

# Copyright (c) 2008-2011, Antonio Hernández Blas <hba.nihilismus@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 1.- Redistributions of source code 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=tp_smapi
VERSION=0.40
BUILD=${BUILD:-4}
TAG=${TAG:-_SBo}

KERNEL=${KERNEL:-"$(uname -r)"}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

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

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tgz
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-s .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# Thanks to debian, gentoo and arch guys for this patches :)
# Fix tp_smapi build in kernel version >= 2.6.37
# http://sourceforge.net/tracker/index.php?func=detail&aid=3153602&group_id=1212&atid=101212
patch -p1 < $CWD/patches/tp_smapi-0.40-2.6.37.patch

# Adds axis inversion handling for x200 and x200s
# https://aur.archlinux.org/packages.php?ID=3985
# This patch *does not* come from upstream, so use it at your own risk.
# patch -p1 < $CWD/patches/tp_smapi-0.40-x200-x200s-support.patch

( case "$ARCH" in
    i?86) ARCH=x86 ;;
  esac
  echo "ARCH=$ARCH"
  make HDAPS=1 KVER=$KERNEL
) || exit 1

mkdir -p $PKG/lib/modules/${KERNEL}/extra
install -m 0664 hdaps.ko \
  $PKG/lib/modules/${KERNEL}/extra/

mkdir -p $PKG/lib/modules/${KERNEL}/kernel/drivers/firmware
install -m 0664 thinkpad_ec.ko tp_smapi.ko \
  $PKG/lib/modules/${KERNEL}/kernel/drivers/firmware

# Make sure the tp_smapi module is loaded before the hdaps module
# Make sure the thinkpad_ec module will load
# We're not going to install these with a .new extension, because we don't
# want them to be present if the package is removed.
mkdir -p $PKG/etc/modprobe.d
cat $CWD/modprobe.tp_smapi.conf > $PKG/etc/modprobe.d/tp_smapi.conf
cat $CWD/modprobe.thinkpad_ec.conf > $PKG/etc/modprobe.d/thinkpad_ec.conf

# Make hdaps kernel module from this package be prefered over hdaps in kernel-module package.
mkdir -p $PKG/etc/depmod.d
echo "override hdaps ${KERNEL} extra" > $PKG/etc/depmod.d/hdaps.conf

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Fixup permissions on kernel modules
find $PKG/lib/modules -type f -exec chmod 0644 {} \;

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a CHANGES README TODO $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%@KERNEL@%$KERNEL%" $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION\_$(echo ${KERNEL} | tr '-' '_')-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}