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#!/bin/sh
# $Id$
# Copyright (c) 2006-2008 Eric Hameleers <alien@slackware.com>
#
#  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:         madwifi
# URL:         http://madwifi.org/
# Description: driver for atheros-based wireless a/b/g cards.
# Needs:
# Changelog:
# 20060126-1:  30/jan/2006 by Eric Hameleers <alien@slackware.com>
#              * First build of the madwifi-ng code.
# 20060131-1:  31/jan/2006 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 20060212-1:  14/feb/2006 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 20060217-1:  17/feb/2006 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 20060222-1:  22/feb/2006 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 20060222-2:  22/feb/2006 by Eric Hameleers <alien@slackware.com>
#              * The man pages were not getting zipped.
# 20060519-1:  20/may/2006 by Eric Hameleers <alien@slackware.com>
#              * Update.
# 0.9.0-1:     31/may/2006 by Eric Hameleers <alien@slackware.com>
#              * First official release! Re-worked the SlackBuild a little.
# 0.9.2-1:     28/jul/2006 by Eric Hameleers <alien@slackware.com>
#              * Skipped a release (due to my holidays).
# 0.9.2-2:     20/sep/2006 by Eric Hameleers <alien@slackware.com>
#              * Updated the SlackBuild script, rebuilt for Slackware 11.0.
# 0.9.2.1-1:   08/dec/2006 by Eric Hameleers <alien@slackware.com>
#              * Critical vulnerability bugfix release.
# 0.9.3-1:     15/mar/2007 by Eric Hameleers <alien@slackware.com>
#              * Long-anticipated new release, compatible with kernel > 2.6.18
#                Made this SlackBuild actually able to build snapshot releases.
#              * Add "make prepare" for 2.6 kernel sources so that the modules
#                will build correctly for SMP kernels.
# 0.9.3.1-1:   23/may/2007 by Eric Hameleers <alien@slackware.com>
#              * This release fixes a few security issues.
# 0.9.3.2-1:   15/aug/2007 by Eric Hameleers <alien@slackware.com>
#              * This release adds support for the 2.6.22 kernel.
# 0.9.3.2-2:   13/oct/2007 by Eric Hameleers <alien@slackware.com>
#              * Patch to support the 2.6.23 kernel.
# 0.9.3.3-1:   18/oct/2007 by Eric Hameleers <alien@slackware.com>
#              * Well that was a quick one. The 2.6.23 kernel is supported now,
#                and a fix for vulnerability CVE-2007-5448 is provided.
#                Everyone is urged to upgrade to this version.
# 0.9.4.1:     23/feb/2008 by Eric Hameleers <alien@slackware.com>
#              * Upgrade.
# 20080521:    21/may/2008 by Eric Hameleers <alien@slackware.com>
#              * Fixed the SlackBuild so that it builds SVN snapshots again,
# 20080908:    08/sep/2008 by Eric Hameleers <alien@slackware.com>
#              * Update.
# -----------------------------------------------------------------------------

# Change SNAPSHOT from "" to "yes" below if you're building a snapshot release.
# Always keep it empty (SNAPSHOT="") if you compile stable releases!
SNAPSHOT=${SNAPSHOT:-"yes"}

PRGNAM=madwifi
SRCVER="0.9.4"
VERSION=${VERSION:-0.9.4} # Note: for snapshot builds,
                          # the VERSION value changes further down;
BUILD=1
TAG=${TAG:-"alien"}

ARCH=${ARCH:-i486}
KVER=${KVER:-$(uname -r)}
KSRC=${KSRC:-/lib/modules/${KVER}/build}

# 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}

if [ -z $SNAPSHOT ]; then   # build a stable release
  SOURCE="$SRCDIR/${PRGNAM}-${SRCVER}.tar.gz"
  SRCURL="http://downloads.sourceforge.net/${PRGNAM}/${PRGNAM}-${SRCVER}.tar.gz"
else   # build a SVN snapshot
  SOURCE="$SRCDIR/${PRGNAM}-trunk-current.tar.gz"
  SRCURL="http://snapshots.madwifi.org/${PRGNAM}-trunk-current.tar.gz"
fi

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

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED on 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

# Prepare the build environment:
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
rm -f $OUTPUT/*${PRGNAM}*.log # clean out old logfiles

# 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 $SOURCE)"
    wget -nv -T 20 -O "${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 ---
# For snapshots we can only determine the VERSION using the tarball:
if [ ! -z $SNAPSHOT ]; then
  echo -n "Changing VERSION from '$VERSION' to "
  SRCVER=$(tar tf $SOURCE |head -1|cut -d- -f3-|cut -d/ -f1)
  VERSION=$(echo $SRCVER|tr '-' '_')
  echo "'$VERSION'"
fi

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

cd $TMP/tmp-$PRGNAM
echo "Extracting the source tarball..."
tar -xzvf "$SOURCE"

if [ -z $SNAPSHOT ]; then
  cd ${PRGNAM}-${SRCVER}
else
  cd ${PRGNAM}-trunk-${SRCVER}
fi
chown -R root:root *
chmod -R u+w,go+r-w,a-s *

# Build the kernel modules and the utilities

# If you need another rate control module than ath_rate_sample (the default),
# you'll need to set the ATH_RATE variable before starting make. For instance,
# (read the INSTALL file why you could want this) to build ath_rate_amrr, set:
# export ATH_RATE=ath_rate/amrr

echo Building ...

LDFLAGS="$SLKLDFLAGS" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
make clean all KERNELPATH=${KSRC} KERNELRELEASE=${KVER} \
  2>&1 | tee $OUTPUT/make-${PRGNAM}.log

# Install the kernel module and tools:
mkdir -p $PKG/usr/{bin,man}

# Use installwatch if available:
if $(which installwatch > /dev/null 2>&1); then
  installwatch -o $OUTPUT/install-${PRGNAM}.log make install DESTDIR=$PKG \
    BINDIR=/usr/bin MANDIR=/usr/man KERNELPATH=${KSRC} KERNELRELEASE=${KVER}
else
  make install DESTDIR=$PKG \
    BINDIR=/usr/bin MANDIR=/usr/man KERNELPATH=${KSRC} KERNELRELEASE=${KVER} \
    2>&1 | tee $OUTPUT/install-${PRGNAM}.log
fi

# Include files (for wpa_supplicant) - note that wpa_supplicant can now also
# communicate with madwifi using the "WEXT" driver:
mkdir -p $PKG/usr/include/madwifi
for i in include net80211; do
  find $i -type f -name "*.h" -exec cp -a --parent {} $PKG/usr/include/madwifi \; 
done

# Documentation
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYRIGHT INSTALL README* SNAPSHOT THANKS $PKG/usr/doc/$PRGNAM-$VERSION || true
cp -a hal/COPYRIGHT $PKG/usr/doc/$PRGNAM-$VERSION/COPYRIGHT.hal || true
cp -a hal/README $PKG/usr/doc/$PRGNAM-$VERSION/README.hal || true
cp -a patch-kernel/README $PKG/usr/doc/$PRGNAM-$VERSION/README.patch-kernel || true
cp -a scripts $PKG/usr/doc/$PRGNAM-$VERSION/ || true
cp -a $SRCDIR/$(basename $0) $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
find $PKG/usr/doc -type f -exec chmod 644 {} \;
   
# Compress the man pages:
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -name "*.?" -type f -exec gzip -9f {} \;
  for i in $(find $PKG/usr/man -type l -name "*.?") ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
fi
   
# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc

# Write a doinst.sh file:
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

# 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
)

# Create the package:
cd $PKG
makepkg -l y -c 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