#!/bin/sh
# $Id$
# Copyright (c) 2006 Yalla-One <yallaone@gmail.co>
# Copyright (c) 2007 Eric Hameleers <alien@slackware.com>
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       ipw3945
# Descr:     Intel PRO/Wireless 3945ABG Driver for Linux
# URL:       http://ipw3945.sourceforge.net/
# Needs:     Linux kernel >= 2.6.13
# Changelog:
# 1.2.0-1:   07/Feb/2007 by Eric Hameleers <alien@slackware.com>
#            * Initial build, based on Yalla-one's SBo script.
# 
# Run 'sh ipw3945.SlackBuild --cleanup' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# --- INIT ---
# Set initial variables:

PRGNAM=ipw3945
VERSION=${VERSION:-1.2.0}
VUCODE=${VUCODE:-1.14.2}
VBLOB=${VBLOB:-1.7.22}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}

DOCS="CHANGES FILES INSTALL ISSUES LICENSE* README* \
      ../${PRGNAM}-ucode-${VUCODE}/LICENSE.* \
      ../${PRGNAM}-ucode-${VUCODE}/README.* \
      ../${PRGNAM}d-${VBLOB}/LICENSE.* ../${PRGNAM}d-${VBLOB}/README.*"

# Where do we keep firmware files?
eval `grep "^FIRMWARE_DIR=" /etc/hotplug/firmware.agent`
FIRMWARE_DIR=${FIRMWARE_DIR:-/lib/firmware}

# Where do we look for sources?
CWD=`pwd`
SRCDIR=`dirname $0`
[ "${SRCDIR:0:1}" == "." ] && SRCDIR=${CWD}/${SRCDIR}

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Kernel module related parameters
KVER=${KVER:-`uname -r`}
KSRC=${KSRC:-/lib/modules/${KVER}/build}
KMDIR=${KMDIR:-/lib/modules/${KVER}/kernel/drivers/net/wireless}

SOURCE[0]="$SRCDIR/${PRGNAM}-${VERSION}.tgz"
SRCURL[0]="http://dl.sourceforge.net/${PRGNAM}/${PRGNAM}-${VERSION}.tgz"
SOURCE[1]="$SRCDIR/${PRGNAM}-ucode-${VUCODE}.tgz"
SRCURL[1]="http://bughost.org/${PRGNAM}/ucode/${PRGNAM}-ucode-${VUCODE}.tgz"
SOURCE[2]="$SRCDIR/${PRGNAM}d-${VBLOB}.tgz"
SRCURL[2]="http://bughost.org/${PRGNAM}/daemon/${PRGNAM}d-${VBLOB}.tgz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line $LINENO!" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Slackware 11 and up need other option (gcc > 3.3.x)
if [ `gcc -dumpversion | tr -d  '.' |cut -c 1-2` -gt 33 ]; then
  MOPT=tune
else
  MOPT=cpu
fi

case "$ARCH" in
  i386)      SLKCFLAGS="-O2 -march=i386 -m${MOPT}=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  i486)      SLKCFLAGS="-O2 -march=i486 -m${MOPT}=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  s390)      SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  powerpc)   SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  athlon-xp) SLKCFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
esac

if [ ! -d $TMP/tmp-$PRGNAM ]; then
  mkdir -p $TMP/tmp-$PRGNAM # location to build the source
elif [ "$P1" != "--oldbuild" ]; then
  # If the "--oldbuild" parameter is present, we keep
  #  the old build files and continue;
  # By default we remove the remnants of previous build and continue:
  rm -rf $TMP/tmp-$PRGNAM/*
fi

if [ ! -d $PKG ]; then
  mkdir -p $PKG  # place for the package to be built
else
  rm -rf $PKG/*  # We always erase old package's contents:
fi

if [ ! -d $OUTPUT ]; then
  mkdir -p $OUTPUT  # place for the package to be saved
fi


# --- SOURCE FILE AVAILABILITY ---

for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if ! [ -f ${SOURCE[$i]} ]; then
    if ! [ "x${SRCURL[$i]}" == "x" ]; then
      # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
      [ -w "$SRCDIR" ] || SOURCE[$i]="$OUTPUT/`basename ${SOURCE[$i]}`"
      echo "Source '`basename ${SOURCE[$i]}`' not available yet..."
      echo "Will download file to `dirname $SOURCE[$i]`"
      wget -nv -O "${SOURCE[$i]}" "${SRCURL[$i]}" || true
      if [ $? -ne 0 ]; then
        echo "Downloading '`basename ${SOURCE[$i]}`' failed.. aborting the build."
        mv -f "${SOURCE[$i]}" "${SOURCE[$i]}".FAIL
        exit 1
      fi
    else
      echo "File '`basename ${SOURCE[$i]}`' not available.. aborting the build."
      exit 1
    fi
  fi
done

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

cd $TMP/tmp-$PRGNAM

echo "Extracting the source archive(s) for $PRGNAM..."
for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if `file ${SOURCE[$i]} | grep -q ": bzip2"`; then
    tar -xjvf ${SOURCE[$i]}
  elif `file ${SOURCE[$i]} | grep -q ": gzip"`; then
    tar -xzvf ${SOURCE[$i]}
  else
    tar -xvf ${SOURCE[$i]} # Just try generically
  fi
done

chown -R root:root *
chmod -R u+w,go+r-w,a-s *

cd ${PRGNAM}-${VERSION}


# --- BUILDING ---

echo Building ...

export LDFLAGS="$SLKLDFLAGS"
export CFLAGS="$SLKCFLAGS"
make 2>&1 | tee $OUTPUT/make-${PRGNAM}.log

#
# Install all the needed stuff to the package dir
#
mkdir -p ${PKG}/etc/modprobe.d ${PKG}/sbin ${PKG}${FIRMWARE_DIR} ${PKG}${KMDIR} 
install -m 644 ${PRGNAM}.ko ${PKG}${KMDIR}
install -m 644 ../${PRGNAM}-ucode-${VUCODE}/${PRGNAM}.ucode ${PKG}${FIRMWARE_DIR}
install -m 755  ../${PRGNAM}d-${VBLOB}/x86/${PRGNAM}d ${PKG}/sbin

# Tweak modprobe options so that the userspace daemon loads correctly:
cat <<-EOT > $PKG/etc/modprobe.d/${PRGNAM}
	# Module parameter initialization for ipw3945.
	# The loop is required for the binary daemon to load in case
	# /var is located on a separate partition, which is mounted
	# after the modules are probed.
	install ipw3945 /sbin/modprobe -i ipw3945 && \\
	{ \\
	while [ ! -d /var/run ]; do \\
	  sleep 1; \\
	done; \\
	until [ -e /var/run/ipw3945d.pid ]; do \\
	  /sbin/ipw3945d --quiet; \\
	  sleep 1; \\
	done; \\
	} &
	remove ipw3945 /sbin/ipw3945d --kill ; /sbin/modprobe -r -i ipw3945
	EOT

# Add this to the doinst.sh
! [ -d $PKG/install ] && mkdir -p $PKG/install
cat <<-EEOOTT >> $PKG/install/doinst.sh
	# Only run depmod on matching running kernel
	# Slackware will run depmod anyway on reboot):
	MYMODVER=$KVER
	MYKERNEL=\`uname -r\`
	if [ "\$MYKERNEL" = "\$MYMODVER" ]; then
	  if [ -x sbin/depmod ]; then
	    chroot . /sbin/depmod -a \$MYKERNEL 1> /dev/null 2> /dev/null
	  fi
	fi
	
	# Check for correct location of FIRMWARE_DIR
	if (! grep -q "^FIRMWARE_DIR=$FIRMWARE_DIR" etc/hotplug/firmware.agent)
	then
	  echo ""
	  echo "WARNING: this package installed IPW3945 firmware"
	  echo "into $FIRMWARE_DIR - but the hotplug package is not configured"
	  echo "to look there!!! Please check /etc/hotplug/firmware.agent"
	  echo "and/or move the firmware file manually to the correct location."
	  echo ""
	fi
	EEOOTT


# --- DOCUMENTATION ---

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
chmod -R a-w $PKG/usr/doc/$PRGNAM-$VERSION/*

# Strip binaries
cd $PKG
find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
cd -


# --- OWNERSHIP, RIGHTS ---

chmod -R o-w $PKG


# --- PACKAGE DESCRIPTION ---

mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc
if [ -f $SRCDIR/doinst.sh ]; then
  cat $SRCDIR/doinst.sh >> $PKG/install/doinst.sh
fi


# --- BUILDING ---

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${VERSION}_$(echo $KVER | tr - _)-${ARCH}-${BUILD}.tgz 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${VERSION}_$(echo $KVER | tr - _)-${ARCH}-${BUILD}.tgz > ${PRGNAM}-${VERSION}_$(echo $KVER | tr - _)-${ARCH}-${BUILD}.tgz.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}_$(echo $KVER | tr - _)-${ARCH}-${BUILD}.txt


# --- CLEANUP ---

# Clean up the extra stuff:
if [ "$P1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
fi