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#!/bin/bash
#
# slackbuild for kernel-ratten
#

CWD="`pwd`"

PACKAGE="kernel-ratten"
KERNEL_VERSION="2.6.12"
EXTRAVERSION=""
ARCH="x86_64"
BUILD="1rha"
PATCHSET="bs"
PATCH_VERSION="3.1.6-2.6.12"
TMP=${TMP:=/tmp}
SRC_DIR=${SRC:=$CWD}
SPLASH="/etc/bootsplash/themes/Slack-Black-Tux/config/bootsplash-1024x768.cfg"
REPOS=${REPOS:=$TMP}

cat << EOCAT
Just remembering, you need the following stuff installed:

  bootsplash
  bootsplash theme: $SPLASH

EOCAT

if [ "$INTERACT" != "no" ]; then
  echo "Hit ENTER do continue, Crtl-C to abort"
  read crap
else
  echo sleeping 3 seconds...
  sleep 3
fi

if [ -f "$SPLASH" ]; then
  echo error: file not found: $SPLASH
  exit 1
fi

if [ ! -z "$EXTRAVERSION" ]; then
  KERNEL_VERSION="$KERNEL_VERSION.$EXTRAVERSION"
fi

RTOOL="wget"
KERNEL="linux-$KERNEL_VERSION.tar.bz2"
PATCH="bootsplash-$PATCH_VERSION.diff"
KERNEL_URL="http://www.kernel.org/pub/linux/kernel/v2.6/$KERNEL"
PATCH_URL="ftp://ftp.openbios.org/pub/bootsplash/kernel/$PATCH"

SRC_DIR="$SRC_DIR/kernel"
mkdir -p $SRC_DIR

if [ "$RTOOL" == "wget" ]; then

  if [ ! -f "$SRC_DIR/$KERNEL" ]; then
    rm -f $SRC_DIR/$KERNEL.sign
    wget "$KERNEL_URL" -O "$SRC_DIR/$KERNEL"
    wget "$KERNEL_URL.sign" -O "$SRC_DIR/$KERNEL.sign"
  fi

  if [ ! -f "$SRC_DIR/$PATCH" ]; then
    wget "$PATCH_URL" -O "$SRC_DIR/$PATCH"
  fi

fi

TMP="$TMP/$PACKAGE"
mkdir -p $TMP
cd $TMP

rm -rf linux-$KERNEL_VERSION*
tar jxvf $SRC_DIR/$KERNEL

if [ ! -z "$PATCHSET" ]; then
  mv linux-$KERNEL_VERSION linux-$KERNEL_VERSION-$PATCHSET
  KERNEL_VERSION="$KERNEL_VERSION-$PATCHSET"
fi

cp $CWD/config-$KERNEL_VERSION linux-$KERNEL_VERSION/.config
cd linux-$KERNEL_VERSION

if [ ! -z "$EXTRAVERSION" ] && [ ! -z "$PATCHSET" ]; then
  sed -e "s/^EXTRAVERSION =*$/EXTRAVERSION = \.$EXTRAVERSION-$PATCHSET/" Makefile > Makefile.tmp
elif [ ! -z "$PATCHSET" ]; then
  sed -e "s/^EXTRAVERSION =*$/EXTRAVERSION = -$PATCHSET/" Makefile > Makefile.tmp
fi

mv Makefile.tmp Makefile
patch -p1 < $SRC_DIR/$PATCH

make oldconfig
time make

if [ -d "/lib/modules/$KERNEL_VERSION" ]; then
  ( cd /lib/modules && mv $KERNEL_VERSION $KERNEL_VERSION.old )
fi

make modules_install

# make the package

PKG="$TMP/package-$PACKAGE"

mkdir -p $PKG/{install,boot,lib/modules,usr/doc}

cp -Rp /lib/modules/$KERNEL_VERSION $PKG/lib/modules

if [ -d "/lib/modules/$KERNEL_VERSION.old" ]; then
  ( cd /lib/modules && mv $KERNEL_VERSION $KERNEL_VERSION.delete && mv $KERNEL_VERSION.old $KERNEL_VERSION && rm -rf $KERNEL_VERSION.delete  )
fi

cp System.map $PKG/boot/System.map-$KERNEL_VERSION
cp .config $PKG/boot/config-$KERNEL_VERSION
cp arch/$ARCH/boot/bzImage $PKG/boot/vmlinuz-$KERNEL_VERSION

cat << EOF > $PKG/install/slack-desc
kernel-ratten: kernel-ratten (linux kernel 2.6.12-bs for ratten AMD64 workstation)
kernel-ratten: 
kernel-ratten: This is the kernel for the RATTEN workstation.
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
kernel-ratten: 
EOF

VERSION="`echo $KERNEL_VERSION | sed -e 's/-/_/g'`"

# docs
mkdir -p $PKG/usr/doc/$PACKAGE-$VERSION
cp -r Documentation $PKG/usr/doc/$PACKAGE-$VERSION/
for file in COPYING CREDITS MAINTAINERS README REPORTING-BUGS; do
  cp $CWD/$file* $PKG/usr/doc/$PACKAGE-$VERSION/
done

mkinitrd -c -k 2.6.15.7 -o $PKG/boot/initrd.gz
splash -s -f $SPLASH > $PKG/boot/initrd.gz 

cd $PKG
makepkg -c y -l y $REPOS/$PACKAGE-$VERSION-$ARCH-$BUILD.tgz

cat << EOCAT
Please check if you need to build or install the following modules:

  realtime-lsm
  shfs

Have a nice day.
EOCAT

if [ "$CLEANUP" == "yes" ]; then
  rm -rf $TMP
fi