#!/bin/sh

# Copyright 2005-2009  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.

# Build this against 2.6.x kernel source and headers...

VERSION=2.6.29-1
ARCH=${ARCH:-i486}
NUMJOBS=${NUMJOBS:-" -j7 "}
BUILD=${BUILD:-2}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
fi

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-iproute2

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf iproute2-$VERSION
tar xvf $CWD/iproute2-$VERSION.tar.bz2 || exit 1
cd iproute2-$VERSION

# Fix up path to bdb
zcat $CWD/iproute2.dbpath.diff.gz | patch -p1 --verbose --backup --suffix=.orig || exit 1
# Fix up iptables lib path
zcat $CWD/iproute2.iptablespath.diff.gz | patch -p1 --verbose --backup --suffix=.orig || exit 1
if [ "$ARCH" = "x86_64" ]; then
  sed -i -e "s#/lib/tc#/lib${LIBDIRSUFFIX}/tc#" $(grep -lr '/lib/tc' *) || exit 1
  sed -i -e "s#/usr/lib/#/usr/lib${LIBDIRSUFFIX}/#" include/iptables.h || exit 1
  sed -i -e "s#/usr/lib/#/usr/lib${LIBDIRSUFFIX}/#" tc/m_ipt.c || exit 1
fi

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

export CFLAGS="$SLKCFLAGS"
make $NUMJOBS DOCDIR=doc/iproute2-$VERSION MANDIR=man/ || exit 1

# This doesn't embed any $TMP or $PKG paths in anything
# Have a look at what the Makefile does for why :)
mkdir -p $PKG/usr
make install DOCDIR=doc/iproute2-$VERSION MANDIR=man/ DESTDIR=$PKG/usr/ \
  || exit 1

# This stuff has always been installed under /sbin rather than
# /usr/sbin, as the latter could possibly be network-mounted, and
# these utilities may be needed to set up that network, so move
# them appropriately, but leave symlinks in /usr/sbin so that
# any scripts using absolute paths will work either way:
mkdir $PKG/sbin
mv $PKG/usr/sbin/* $PKG/sbin
( cd $PKG/usr/sbin
  for file in ../../sbin/* ; do
    ln -sf $file .
  done
)

mv $PKG/usr/etc $PKG
# Don't clobber existing config files
for file in $PKG/etc/iproute2/* ; do
  mv $file ${file}.new
done

# Remove junk:
[ -d $PKG/usr/usr ] && rm -r $PKG/usr/usr

mkdir -p $PKG/var/lib/arpd

find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress and if needed symlink the man pages:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

mkdir -p $PKG/usr/doc/iproute2-$VERSION
cp -a COPYING RE* \
  $PKG/usr/doc/iproute2-$VERSION

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $TMP/iproute2-$(echo $VERSION | tr - _)-$ARCH-$BUILD.txz