#!/bin/bash
# -- This script uses Bash extensions

# Installation into /tmp for later scp-ing.
# You do not need to be a root for this.
# Run this from your build directory.

# VERSION = 2
# PATCHLEVEL = 4
# SUBLEVEL = 2
# EXTRAVERSION = -ac3
# EXTRAVERSION =-ac3
# KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)

# No workie because 1. spaces around '=', 2. line feeds are eaten
# eval $(egrep "^VERSION *= *|^PATCHLEVEL *= *|^SUBLEVEL *= *|^EXTRAVERSION *= *" Makefile)

readmakefile () {
  while read key equ val; do

    # Woops, no space after the equal sign
    if [[ "$val" == "" && "$equ" == "=?*" ]]; then
      val=${equ:1}
      equ="="
    fi

    if [ "$equ" = "=" ]; then
      case "$key" in
      VERSION)       VERSION="$val"      ;;
      PATCHLEVEL)    PATCHLEVEL="$val"   ;;
      SUBLEVEL)      SUBLEVEL="$val"     ;;
      EXTRAVERSION)  EXTRAVERSION="$val" ;; 
      esac
    fi
  done
  echo ${VERSION}.${PATCHLEVEL}.${SUBLEVEL}${EXTRAVERSION}
}

#
# main()
#

set -e

KID=$(readmakefile < Makefile)
KARCH=$(readlink include/asm | awk -F- '{ print $2}')
if [ "$KARCH" = "i386" ]; then
  ARCH=i386
elif [ "$KARCH" = "s390" ]; then
  ARCH=s390
elif [ "$KARCH" = "s390x" ]; then
  ARCH=s390
else
  echo "Unknown architecture $KARCH" >&2
  exit 1
fi

BOOTDIR=/tmp
MODROOT=/tmp/mod

echo "Collecting $KID ..."
INSTALL_MOD_PATH=$MODROOT make modules_install	# makes /tmp/mod as needed

echo "Copying $KID to $BOOTDIR for $KARCH ..."
#if [ "$PATCHLEVEL" != "6" ]; then		# Not needed on 2.6, we have kallsyms.
  cp vmlinux $BOOTDIR/vmlinux-$KID
#fi
cp System.map $BOOTDIR/System.map-$KID
if [ "$ARCH" = "s390" ]; then
  cp arch/$KARCH/boot/image $BOOTDIR/vmlinuz-$KID
else
  cp arch/$KARCH/boot/bzImage $BOOTDIR/vmlinuz-$KID
fi
(cd $MODROOT/lib/modules && tar cf - $KID) | gzip -c > /tmp/modules.tgz-$KID

echo "Done with $KID"