native-compiling: make-portage-squash

#!/bin/bash

OPENMOKO_OVERLAY="/usr/portage/local/layman/openmoko/trunk/openmoko-target/"
MY_PWD=${PWD}

if [[ -d squash ]]
then
  echo "Deleting dir 'squash'..."
  rm -rf squash || exit 1
  echo "  done."
fi
if [[ -e portage.squashfs ]]
then
  echo "Deleting old 'portage.squashfs'..."
  rm -rf portage.squashfs || exit 1
  echo "  done."
fi

echo "Creating dir 'squash'..."
mkdir squash || exit 1
echo "  done."

echo "Getting and extracting 'portage-latest.tar.bz2'..."
wget -O- \
--progress=bar \
  http://de-mirror.org/distro/gentoo/snapshots/portage-latest.tar.lzma \
  | unlzma -c \
  | tar xp -C squash \
    || exit 1
echo "  done."

echo "Preparing Openmoko Overlay..."
mkdir "${MY_PWD}/squash/tmpOM"
(cd ${OPENMOKO_OVERLAY} && tar cf - .) | (cd ${MY_PWD}/squash/tmpOM/ && tar xpf -) || exit 1
echo "  done."
echo "Sorting categories ..."
cat "${MY_PWD}/squash/portage/profiles/categories" >> "${MY_PWD}/squash/tmpOM/profiles/categories"
sort -u -o "${MY_PWD}/squash/tmpOM/profiles/categories" "${MY_PWD}/squash/tmpOM/profiles/categories"
echo "  done."
echo "Handling further difficult files ..."
for i in repo_name embedded arch.list
do
  cp -r "${MY_PWD}/squash/portage/profiles/${i}" "${MY_PWD}/squash/tmpOM/profiles/"
done
echo "  done."
echo "Injecting fixed Overlay ..."
(cd ${MY_PWD}/squash/tmpOM/ && tar cf - .) | (cd ${MY_PWD}/squash/portage/ && tar xpf -) || exit 1
echo "  done."
echo "Cleaning up .svn remnants..."
for i in `find "${MY_PWD}/squash/portage/" -name .svn`
do
  rm -rf ${i}
done
echo "  done."
echo "Redigesting portage tree..."
for i in $(ls ${OPENMOKO_OVERLAY})
do
  if [[ -d ${OPENMOKO_OVERLAY}/${i} ]]
  then for j in $(ls ${OPENMOKO_OVERLAY}/${i})
    do if [[ -e ${OPENMOKO_OVERLAY}/${i}/${j}/Manifest ]]
      then 
        dir="squash/portage/${i}/${j}/"
        ebuild ${dir}/$(ls ${dir} | grep ebuild$ | tail -n1) digest
      fi
    done
  fi
done
echo "  done."

cd ${MY_PWD}/squash
chown -R portage:portage *

echo "Creating squashfs..."
mksquashfs portage ../portage.squashfs || exit 1
echo "  done."

chmod a+r,a-wx ../portage.squashfs

echo "Done."