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#!/bin/sh
# $Id$
# Copyright (c) 2006 Eric Hameleers <alien@slackware.com>
# Distributed under the terms of the GNU General Public License, Version 2
#
# -----------------------------------------------------------------------------
#
# 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).

# ----------------------------------------------------------------------------
CWD=`pwd` 
if [ "$TMP" = "" ]; then
  TMP=/tmp
fi

PRGNAM=madwifi
PKG=$TMP/package-$PRGNAM

SNAPSHOT=""     # set to "yes" if you're building a snapshot release.
VERSION=0.9.2
BUILD=1
ARCH=${ARCH:-i486}
KVER=${KVER:-`uname -r`}
KSRC=${KSRC:-/lib/modules/${KVER}/build}
PATCHLEVEL=`echo $KVER|cut -f 2 -d '.'`

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

case "$ARCH" in
  i386)      SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  i486)      SLKCFLAGS="-O2 -march=i486 -mcpu=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 [ "$1" != "--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

# --- PACKAGE BUILDING ---

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

if [ "$PKG" = "" -o "$PKG" = "/" ] ; then
  echo "Please provide a sane value for the variable 'PKG'."
  exit 1
elif [ ! -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

rm -f $CWD/*.log
cd $PKG

# Explode the package framework:
if [ -f $CWD/_$PRGNAM.tar.gz ]; then
  explodepkg $CWD/_$PRGNAM.tar.gz
fi

cd $TMP/tmp-$PRGNAM

# Actually you must get the sources from SVN:
# $ svn checkout http://svn.madwifi.org/trunk madwifi-ng
# The above command stores the source in a subdirectory called madwifi-ng.
# To update to the current version of the source at a later time you just need
# to change to that subdirectory and type:
# $ svn update
# Then pack the source tree into madwifi-ng-yyyymmdd.tar.gz for use in this build.
#
# ... or get a snapshot at http://snapshots.madwifi.org/

echo "Extracting the source tarball..."
if [ -z $SNAPSHOT ]; then
  tar xzvf $CWD/${PRGNAM}-$VERSION.tar.gz
else
  tar xzvf $CWD/${PRGNAM}-ng*$VERSION.tar.gz
fi
# I expect a pristine kernel source (freshly installed slackware package)
# Madwifi expects the sources at the location that the link
# "/lib/modules/<kernelversion>/build" points to.... so be it.
cd ${KSRC}
make clean oldconfig dep
cd -

if [ -z $SNAPSHOT ]; then
  cd ${PRGNAM}-${VERSION}
else
  cd ${PRGNAM}-ng*${VERSION}
fi
chown -R root:root *
find . -perm 777 -exec chmod 755 {} \;

# 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" \
make clean all KERNELPATH=${KSRC} KERNELRELEASE=${KVER} \
  2>&1 | tee $CWD/make-${PRGNAM}.log

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

# Use installwatch if available:
which installwatch > /dev/null 2>&1
if [ $? == 0 ]; then
  installwatch -o $CWD/install-${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 $CWD/install-${PRGNAM}.log
fi

# Include files (for wpa_supplicant):
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 TODO $PKG/usr/doc/$PRGNAM-$VERSION
cp -a hal/COPYRIGHT $PKG/usr/doc/$PRGNAM-$VERSION/COPYRIGHT.hal
cp -a hal/README $PKG/usr/doc/$PRGNAM-$VERSION/README.hal
cp -a patches/README $PKG/usr/doc/$PRGNAM-$VERSION/README.patches
cp -a docs/WEP-HOWTO.txt  docs/users-guide.pdf $PKG/usr/doc/$PRGNAM-$VERSION/
cp -a scripts $PKG/usr/doc/$PRGNAM-$VERSION/
chmod -R g-w,o-w $PKG/usr/doc/$PRGNAM-$VERSION
   
# Compress the man pages
find $PKG/usr/man -type f -exec gzip -9f {} \;
   
# Compress the kernel modules
[ $PATCHLEVEL -eq 4 ] && find $PKG/lib/modules -type f -exec gzip -9 {} \;

# Add the slack-desc and doinst.sh files
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
# Substitute correct kernel versions
sed -i -e "s#\@\@KERNELVERS\@\@#${KVER}#g" $PKG/install/slack-desc
# Write a doinst.sh
[ $PATCHLEVEL -eq 4 ] &&  MODCONFFILE=modules.conf || MODCONFFILE=modprobe.conf
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
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Permissions
chmod -R o-w $PKG

# Create the package
cd $PKG
makepkg -l y -c n $TMP/$PRGNAM-${VERSION}_${KVER}-$ARCH-$BUILD.tgz \
  2>&1 | tee $CWD/makepkg-${PRGNAM}.log
(cd $TMP && md5sum $PRGNAM-${VERSION}_${KVER}-$ARCH-$BUILD.tgz > $PRGNAM-${VERSION}_${KVER}-$ARCH-$BUILD.tgz.md5)
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $TMP/$PRGNAM-${VERSION}_${KVER}-$ARCH-$BUILD.txt

cd $CWD

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
fi