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#!/bin/sh
# $Id$
# Copyright (c) 2007-2008 Eric Hameleers <alien@slackware.com>
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS 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.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       rt61
# Descr:     Driver for RaLink rt61 wireless cards
# URL:       http://rt2x00.serialmonkey.com
# Needs:     
# Changelog:
# 20070108-1: 08/Jan/2007 by Eric Hameleers <alien@slackware.com>
#             * Initial build.
# 20070901-1: 01/Sep/2007 by Eric Hameleers <alien@slackware.com>
#             * Much needed upgrade.
# 20071014-1: 14/oct/2007 by Eric Hameleers <alien@slackware.com>
#             * Update.
# 20080518-1: 18/may/2008 by Eric Hameleers <alien@slackware.com>
#             * Update.
# 
# Run 'sh rt61.SlackBuild --cleanup' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# Set initial variables:

PRGNAM=rt61
VERSION=${VERSION:-20080518}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-alien}

DOCS="CHANGELOG FAQ LICENSE THANKS Module/README Module/ReleaseNote \
      Module/STA_iwpriv_ATE_usage.txt Module/TESTING Module/iwpriv_usage.txt \
      WPA_Supplicant"

# Where do we look for sources?
SRCDIR=$(cd $(dirname $0); pwd)

# 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}
PATCHLEVEL=`echo $KVER|cut -f 2 -d '.'`
[ $PATCHLEVEL -eq 4 ] &&  MODCONFFILE=modules.conf || MODCONFFILE=modprobe.conf

SOURCE="$SRCDIR/${PRGNAM}-cvs-daily.tar.gz"
SRCURL="http://rt2x00.serialmonkey.com/${PRGNAM}-cvs-daily.tar.gz"

##
## --- 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 "$ARCH" in
  i486)      SLKCFLAGS="-O2 -march=i486 -m${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

# Create working directories:
mkdir -p $TMP/tmp-$PRGNAM # Location to build the source
rm -rf $TMP/tmp-$PRGNAM/* # Remove the remnants of previous build
mkdir -p $PKG             # Place for the package to be built
rm -rf $PKG/*             # Erase old package's contents
mkdir -p $OUTPUT          # Place for the package to be saved

# Source file availability:
if ! [ -f ${SOURCE} ]; then
  if ! [ "x${SRCURL}" == "x" ]; then
    # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
    [ -w "$SRCDIR" ] || SOURCE="$OUTPUT/`basename $SOURCE`"
    echo "Source '`basename ${SOURCE}`' not available yet..."
    echo "Will download file to `dirname $SOURCE`"
    wget -nv -T 30 -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 -o ! -s "${SOURCE}" ]; then
      echo "Downloading '`basename ${SOURCE}`' failed... aborting the build."
      mv -f "${SOURCE}" "${SOURCE}".FAIL
      exit 1
    fi
  else
    echo "File '`basename ${SOURCE}`' not available... aborting the build."
    exit 1
  fi
fi

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..."
if `file ${SOURCE} | grep -q ": bzip2"`; then
  tar -xjvf ${SOURCE}
elif `file ${SOURCE} | grep -q ": gzip"`; then
  tar -xzvf ${SOURCE}
fi
if ! cd ${PRGNAM}-cvs-${VERSION}* ; then
  echo "**"
  echo "** The source archive: '$(basename ${SOURCE})' contains '$(ls -d --indicator-style=none ${PRGNAM}-cvs-*)'"
  echo "** This does not match the version '${VERSION}' of the package you're trying to build!"
  echo "** Please remove '$(basename ${SOURCE})',"
  echo "** and (let the script) download '${SRCURL}' again!"
  echo "**  - or change the VERSION value of the script."
  echo "**"
  exit 1
fi
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

echo Building ...
export LDFLAGS="$SLKLDFLAGS"
export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
(cd Module
 make KERNDIR=$KSRC PATCHLEVEL=$PATCHLEVEL \
   2>&1 | tee $OUTPUT/make-${PRGNAM}.log
)

# Install all the needed stuff to the package dir
mkdir -p $PKG/lib/modules/${KVER}/extra
if [ $PATCHLEVEL -eq 4 ]; then
  gzip -9cf Module/${PRGNAM}.o > $PKG/lib/modules/${KVER}/extra/${PRGNAM}.o.gz
else
  cp -a Module/${PRGNAM}.ko $PKG/lib/modules/${KVER}/extra/
fi
# Copy the firmware files over (note, the driver now looks in /lib/firmware):
mkdir -p $PKG/lib/firmware
cp -a Module/*bin $PKG/lib/firmware/
# We don't bother with RaLink's binary configuration file,
# /etc/Wireless/RT61STA/rt61sta.dat, since iwconfig/iwpriv are just as good.

# 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
	EEOOTT

# Add documentation:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
cp -a $SRCDIR/$(basename $0) $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
find $PKG/usr/doc/$PRGNAM-$VERSION -type d -name CVS -exec rm -rf {} \; || true
find $PKG/usr/doc -type f -exec chmod 644 {} \;

# Compress the kernel modules:
[ $PATCHLEVEL -eq 4 ] && \
    find $PKG/lib/modules -type f -name "*.?" -exec gzip -9 {} \;

# Add a 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

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

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