#!/bin/sh
# $Id$
# Copyright (c) 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:        rt2570
# Descr:      driver for RaLink based wireless cards
# URL:        http://rt2x00.sourceforge.net/
# Needs:     
# Changelog:
# 20080530-1: 30/may/2008 by Eric Hameleers <alien@slackware.com>
#             * Initial build
# 
# Run 'sh rt2570.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=rt2570
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-alien}

# If you use a CVS daily tarball, the VERSION string will be
# determined from the tarball content. VERSION will look like YYYYMMDD
# If USE_CVS == "no" then the script will use SRCVER and VERSION values below.
USE_CVS=${USE_CVS:-"yes"}

if [ "$USE_CVS" == "yes" ]; then
  SRCVER="cvs-daily"
  VERSION="cvs-daily"
else
  SRCVER=1.1.0-b2
  VERSION=$( echo ${SRCVER} | tr '-' '.' )
fi

DOCS="CHANGELOG FAQ LICENSE THANKS ./Module/iwpriv_usage.txt  \
      ./Module/TESTING README*"

# 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

# Input URL: http://rt2x00.serialmonkey.com/rt2570-cvs-daily.tar.gz
SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.gz"
if [ "$USE_CVS" == "yes" ]; then
  SRCURL="http://rt2x00.serialmonkey.com/${PRGNAM}-cvs-daily.tar.gz"
else
  SRCURL="http://downloads.sourceforge.net/rt2400/${PRGNAM}-${SRCVER}.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 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..."
tar -xvf ${SOURCE}
if [ -d ${PRGNAM}-${SRCVER} ]; then
  mv ${PRGNAM}-${SRCVER} ${PRGNAM}-${VERSION}
else
  echo -n "Changing VERSION from '$VERSION' to "
  VERSION=$(tar -tf $SOURCE | head -1 | cut -d- -f3 | cut -c 1-8)
  echo "'$VERSION'"
  mv ${PRGNAM}-cvs-${VERSION}* ${PRGNAM}-${VERSION}
fi
cd ${PRGNAM}-${VERSION}
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

echo Building ...
( cd Module
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  LDFLAGS="$SLKLDFLAGS" \
  make debug KERNDIR=$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}/drivers/net/wireless
cp -a Module/${PRGNAM}.ko $PKG/lib/modules/${KVER}/drivers/net/wireless/

# 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

	# Determine the rc.modules to use:
	if [ -f etc/rc.d/rc.modules.local ]; then
	  RCMODULES="etc/rc.d/rc.modules.local"
	elif [ -f etc/rc.d/rc.modules-$(uname -r) ]; then
	  RCMODULES="etc/rc.d/rc.modules-$(uname -r)"
	else
	  RCMODULES="etc/rc.d/rc.modules"
	fi
	
	# Make sure the module gets loaded on boot:
	if ! grep -q "$PRGNAM" \${RCMODULES} ; then
	  echo "" >> \${RCMODULES}
	  echo "# Load the kernel module" >> \${RCMODULES}
	  echo "/sbin/modprobe $PRGNAM" >> \${RCMODULES}
	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 -type f -exec chmod 644 {} \;
chown -R root:root $PKG/usr/doc/$PRGNAM-$VERSION

# Compress the man page(s):
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -type f -name "*.?" -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
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