#!/bin/sh
# $Id$
# Copyright (c) 2007 Eric Hameleers <alien@slackware.com>
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       acx
# Descr:     ACX100/ACX111 wireless network driver
# URL:       http://acx100.sourceforge.net
# Needs:     A firmware file or else the driver will not load.
# Changelog:
# 20070101-1: 28/Jan/2007 by Eric Hameleers <alien@slackware.com>
#             * Initial build.
# 
# Run 'sh acx.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=acx
VERSION=${VERSION:-20070101}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}

DOCS="Changelog README script"

# 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}
PATCHLEVEL=`echo $KVER|cut -f 2 -d '.'`
[ $PATCHLEVEL -eq 4 ] &&  KEXT=o || KEXT=ko

# Input URL: http://www.cmartin.tk/acx/acx-20070101.tar.bz2
SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.bz2"
SRCURL="http://www.cmartin.tk/${PRGNAM}/${PRGNAM}-${VERSION}.tar.bz2"

##
## --- 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 ---

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 $SOURCE`"
    wget -nv -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 ]; 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

# --- TARBALL EXTRACTION,PATCH,MODIFY ---

echo "Extracting the source archive(s) for $PRGNAM..."
if `file ${SOURCE} | grep -q ": bzip2"`; then
  tar -xjvf ${SOURCE}
else
  tar -xzvf ${SOURCE}
fi
cd ${PRGNAM}-${VERSION}

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


# --- BUILDING ---

echo Building ...

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

# A binary to extract firmware file from binary drivers, let's add it
pushd script/firmware
make 2>&1 | tee -a $OUTPUT/make-${PRGNAM}.log
popd

#
# Install all the needed stuff to the package dir
#
mkdir -p $PKG/lib/modules/${KVER}/drivers/net/wireless/acx
cp acx.${KEXT} $PKG/lib/modules/${KVER}/drivers/net/wireless/acx/

mkdir -p $PKG/usr/share/acx
cp script/firmware/extract $PKG/usr/share/acx/

# 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


# --- DOCUMENTATION ---

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
rm -rf $PKG/usr/doc/$PRGNAM-$VERSION/script/firmware
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
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

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


# --- 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}-${VERSION}_${KVER}-${ARCH}-${BUILD}.tgz \
  2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
(cd $OUTPUT && md5sum ${PRGNAM}-${VERSION}_${KVER}-${ARCH}-${BUILD}.tgz > ${PRGNAM}-${VERSION}_${KVER}-${ARCH}-${BUILD}.tgz.md5)
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}_${KVER}-${ARCH}-${BUILD}.txt


# --- CLEANUP ---

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