#!/bin/sh

CWD=`pwd`
TMP=/tmp
BUILDDIR=/usr/src
PKGKERNEL=$TMP/package-kernel+
PKGSOURCE=$TMP/package-source
VERSION=2.6.13.2
SOURCEBUILD=1
KERNELBUILD=1
SOURCEARCH=noarch
KERNELARCH=i486
# This is where we retrieve our bzImage from
# $BUILDDIR/linux-$VERSION/arch/$KERNELPLATFORM/boot
KERNELPLATFORM=i386

rm -rf $PKGKERNEL
rm -rf $PKGSOURCE
mkdir -p $PKGKERNEL/{boot,install,lib/modules}
mkdir -p $PKGSOURCE/{install,usr/src}


if [ -d /usr/src/linux-$VERSION ]; then
  mv $BUILDDIR/linux-$VERSION $BUILDDIR/linux-$VERSION.orig
fi

if [ -d /lib/modules/$VERSION ]; then
  mv /lib/modules/$VERSION /lib/modules/$VERSION.orig
fi

# I also like to hide /boot from the kernel (config reasons):
mv /boot /boot.tmp

cd $BUILDDIR
echo
echo "linux-$VERSION.tar.bz2 is now extracting..."
echo
tar -xjf $CWD/linux-$VERSION.tar.bz2
cd linux-$VERSION
make distclean
# Only root users should be messing with the kernel
chown -R root.root .

echo "Making the kernel source package..."
echo
sleep 2
install -m 644 $CWD/config-$VERSION	$BUILDDIR/linux-$VERSION/.config
make oldconfig > /dev/null
make bzImage
make clean
rm -f .version
echo
echo "Moving source into package..."
echo
cd $PKGSOURCE/usr/src
cp -Ra $BUILDDIR/linux-$VERSION $PKGSOURCE/usr/src
# This is said to no longer be required. Until somebody points out
# that it actually hurts anything, It'll stay here.
ln -sf linux-$VERSION linux

cat << EOF > $PKGSOURCE/install/slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|' on
# the right side marks the last column you can put a character in.  You must make
# exactly 11 lines for the formatting to be correct.  It's also customary to
# leave one space after the ':'.

             |-----handy-ruler------------------------------------------------------|
kernel-source: linux-$VERSION (kernel source)
kernel-source:
kernel-source: Source code for Linus Torvalds' Linux kernel.
kernel-source:
kernel-source: This is the complete source code for the Linux kernel.
kernel-source:
kernel-source:
kernel-source:
kernel-source:
kernel-source:
kernel-source:
EOF

cd $PKGSOURCE
makepkg -l y -c n $TMP/kernel-source-$VERSION-$SOURCEARCH-$SOURCEBUILD.tgz

echo
echo "Making the kernel+ package..."
echo
sleep 2

cd $BUILDDIR/linux-$VERSION
make bzImage
make modules
make modules_install
rm -rf /lib/modules/$VERSION/{build,source}
mv /lib/modules/$VERSION $PKGKERNEL/lib/modules/$VERSION
cat System.map > $PKGKERNEL/boot/System.map.$VERSION
cat arch/$KERNELPLATFORM/boot/bzImage > $PKGKERNEL/boot/vmlinuz-$VERSION
cat .config > $PKGKERNEL/boot/config-$VERSION
( cd $PKGKERNEL/boot
  ln -sf System.map.$VERSION System.map
  ln -sf vmlinuz-$VERSION vmlinuz )
cat << EOF > $PKGKERNEL/install/doinst.sh
( cd lib/modules/$VERSION ; rm -rf build )
( cd lib/modules/$VERSION ; ln -sf ../../../usr/src/linux-$VERSION build )
( cd lib/modules/$VERSION ; rm -rf source )
( cd lib/modules/$VERSION ; ln -sf ../../../usr/src/linux-$VERSION source )
# A good idea whenever kernel modules are added or changed:
if [ -x sbin/depmod ]; then
  chroot . /sbin/depmod -a 1> /dev/null 2> /dev/null
fi
EOF

cat << EOF > $PKGKERNEL/install/slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

       |-----handy-ruler------------------------------------------------------|
kernel+: kernel+ (kernel and modules)
kernel+:
kernel+: A kernel module is a piece of object code that can be dynamically
kernel+: loaded into the Linux kernel to provide new kernel functions.
kernel+: Most of these modules provide support for devices such as CD-ROM
kernel+: drives, tape drives, and ethernet cards.
kernel+: 
kernel+: This package also contains the built kernel or bzImage that is
kernel+: used to boot your system.
kernel+:
kernel+:
EOF

cd $PKGKERNEL
makepkg -l y -c n $TMP/kernel+-$VERSION-$KERNELARCH-$KERNELBUILD.tgz

echo
echo "Cleaning up..."

# Restore the original directories
rm -rf $BUILDDIR/linux-$VERSION
if [ -d $BUILDDIR/linux-$VERSION.orig ]; then
  mv $BUILDDIR/linux-$VERSION.orig $BUILDDIR/linux-$VERSION
fi
if [ -d /lib/modules/$VERSION.orig ]; then
  mv /lib/modules/$VERSION.orig /lib/modules/$VERSION
fi

mv /boot.tmp /boot

cd $TMP
rm -rf $PKGKERNEL
rm -rf $PKGSOURCE

echo
echo "All Done!"
echo "Your packages are in $TMP"
echo

make oldconfig