#!/bin/bash
#  Copyright (C) 2010-2012  Matias A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

V=1.42.2
ARCH=${ARCH:-x86_64}
B=1

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -mtune=generic}

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j4}

PKG=${TMP}/package-e2fsprogs

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/e2fsprogs-${V}
lzip -cd ${CWD}/e2fsprogs-${V}.tar.lz | tar -xvf - -C $TMP

cd ${TMP}/e2fsprogs-${V}

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
 \( -perm 2777 -o \
    -perm 777  -o \
    -perm 775  -o \
    -perm 711  -o \
    -perm 555  -o \
    -perm 511     \
 \) -exec chmod 755 {} + \
  -o \
 \( -perm 666 -o \
    -perm 664 -o \
    -perm 600 -o \
    -perm 444 -o \
    -perm 440 -o \
    -perm 400    \
 \) -exec chmod 644 {} +

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --libdir=/lib64 \
 --sysconfdir=/etc \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --with-root-prefix="" \
 --enable-elf-shlibs \
 --disable-uuidd \
 --disable-libuuid \
 --disable-libblkid \
 --disable-fsck \
 --build=${ARCH}-dragora-linux-gnu

make $JOBS
if [[ -n $CHECK ]]; then
  make check;
fi
make install DESTDIR=$PKG
make install-libs DESTDIR=$PKG

# Move the shared libraries and pkgconfig under usr/lib64:
mkdir -p ${PKG}/usr/lib64
mv \
 ${PKG}/lib64/pkgconfig ${PKG}/lib64/*.so \
 ${PKG}/usr/lib64
# Make the symlink compatibility:
( cd ${PKG}/usr/lib64
  for shared in *.so ; do
    ln -sf /lib64/$(readlink $shared) $shared
  done
)

# Increments a little the security:
find ${PKG}/sbin -type f | xargs chmod -v 750
find ${PKG}/usr/sbin -type f | xargs chmod -v 750

# Handle config file:
mv ${PKG}/etc/mke2fs.conf{,.new}

# Just in case:
cat << "EOF" > ${PKG}/etc/e2fsck.conf
[options]
        buggy_init_scripts = 1
EOF

# Strip binaries & libraries:
( cd $PKG
  find . -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
   cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . -type f | xargs file | awk '/current ar archive/' | \
   cut -f 1 -d : | xargs strip --strip-debug 2> /dev/null
)

# Creates links in ${PKG}/sbin:
( cd ${PKG}/sbin
  ln -sf e2fsck fsck.ext2
  ln -sf e2fsck fsck.ext3
  ln -sf e2fsck fsck.ext4
  ln -sf e2fsck fsck.ext4dev
  ln -sf mke2fs mkfs.ext2
  ln -sf mke2fs mkfs.ext3
  ln -sf mke2fs mkfs.ext4
  ln -sf mke2fs mkfs.ext4dev
  ln -sf tune2fs e2label
  ln -sf tune2fs findfs
)

# Compress and link man-pages:
gzip -9Nf ${PKG}/usr/man/man?/*.?
( cd ${PKG}/usr/man/man8
  ln -sf e2fsck.8.gz fsck.ext2.8.gz
  ln -sf e2fsck.8.gz fsck.ext3.8.gz
  ln -sf e2fsck.8.gz fsck.ext4.8.gz
  ln -sf e2fsck.8.gz fsck.ext4dev.8.gz
  ln -sf mke2fs.8.gz mkfs.ext2.8.gz
  ln -sf mke2fs.8.gz mkfs.ext3.8.gz
  ln -sf mke2fs.8.gz mkfs.ext4.8.gz
  ln -sf mke2fs.8.gz mkfs.ext4dev.8.gz
)

# Compress GNU info documents:
( cd ${PKG}/usr/info ; rm -f dir ; gzip -9N * )

# Add the documentation:
mkdir -p ${PKG}/usr/doc/e2fsprogs-${V}
cp -a \
 ABOUT-NLS COPYING README RELEASE-NOTES SHLIBS e2fsprogs.lsm \
 ${PKG}/usr/doc/e2fsprogs-${V}

# Copy the description files:
mkdir -p ${PKG}/{description,install}
cp ${CWD}/description/* ${PKG}/description

# Add post-install script:
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

cd $PKG
makepkg -l ${OUT}/e2fsprogs-${V}-${ARCH}-${B}.tlz