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#!/bin/bash
#
#  anacron.SlackBuild 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 2 of the License,
#  or any later version.
#
#  anacron.SlackBuild 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, write to the Free Software Foundation, Inc.,
#  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
#
# slackbuild for anacron, by Sivio Rhatto
# requires:  
# tested: anacron-2.3
#

# Look for slackbuildrc
if [ -f ~/.slackbuildrc ]; then
  source ~/.slackbuildrc
elif [ -f /etc/slackbuildrc ]; then
  source /etc/slackbuildrc
fi

# Set variables
CWD="$(pwd)"
SRC_NAME="anacron"
PKG_NAME="anacron"
ARCH=${ARCH:=i486}
SRC_VERSION=${VERSION:=2.3}
PKG_VERSION="$(echo "$SRC_VERSION" | tr '[[:blank:]-]' '_')"
BUILD=${BUILD:=1rha}
SRC_DIR=${SRC_DIR:=$CWD}/$PKG_NAME
TMP=${TMP:=/tmp}
PKG=${PKG:=$TMP/package-$PKG_NAME}
REPOS=${REPOS:=$TMP}
PREFIX=${PREFIX:=/usr}
PKG_WORK="$TMP/$SRC_NAME"
CONF_OPTIONS=${CONF_OPTIONS:=""}
NUMJOBS=${NUMJOBS:=""}

# Set system libraries' path and optmization flags based on $ARCH
LIBDIR="$PREFIX/lib"

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mcpu=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIR="$PREFIX/lib64"
  LDFLAGS="-L/lib64 -L/usr/lib64"
fi

# Set error codes (used by createpkg)
ERROR_WGET=31;      ERROR_MAKE=32;      ERROR_INSTALL=33
ERROR_MD5=34;       ERROR_CONF=35;      ERROR_HELP=36
ERROR_TAR=37;       ERROR_MKPKG=38;     ERROR_GPG=39
ERROR_PATCH=40;     ERROR_VCS=41;       ERROR_MKDIR=42

# Clean up any leftovers of previous builds
rm -rf "$PKG_WORK" 2> /dev/null
rm -rf "$PKG" 2> /dev/null

# Create directories if necessary
mkdir -p "$SRC_DIR" || exit $ERROR_MKDIR
mkdir -p "$PKG" || exit $ERROR_MKDIR
mkdir -p "$REPOS" || exit $ERROR_MKDIR
mkdir -p "$PKG_WORK" || exit $ERROR_MKDIR

# Creating build user and group
if ! grep -qe "^$PKG_NAME:" /etc/group; then
  groupadd $PKG_NAME
fi
if ! grep -qe "^$PKG_NAME:" /etc/passwd; then
  useradd $PKG_NAME -g $PKG_NAME
fi

# Dowload source if necessary
SRC="$SRC_NAME-$VERSION.tar.gz"
URL="http://downloads.sourceforge.net/anacron/$SRC"

if [ ! -s "$SRC_DIR/$SRC" ] || ! gunzip -t "$SRC_DIR/$SRC" 2> /dev/null; then
  wget "$URL" -O "$SRC_DIR/$SRC" || exit $ERROR_WGET
fi

# Untar
cd "$PKG_WORK"
tar --no-same-owner --no-same-permissions -xvf "$SRC_DIR/$SRC" || exit $ERROR_TAR
PKG_SRC="$PWD/`ls -l | awk '/^d/ { print $NF }'`"
cd "$PKG_SRC"

# Patch source
patches="
         $PKG_NAME.diff $PKG_NAME-$PKG_VERSION.diff
         $PKG_NAME-$PKG_VERSION-$ARCH.diff $PKG_NAME-$ARCH.diff"
for patch in $patches; do
  if [ -f "$CWD/$patch" ]; then
    patch -Np1 < "$CWD/$patch" || exit $ERROR_PATCH
  elif [ -f "$CWD/patches/$patch" ]; then
    patch -Np1 < "$CWD/patches/$patch" || exit $ERROR_PATCH
  elif [ -f "$CWD/$patch.gz" ]; then
    gzip -dc "$CWD/$patch.gz" | patch -Np1 || exit $ERROR_PATCH
  elif [ -f "$CWD/patches/$patch.gz" ]; then
    gzip -dc "$CWD/patches/$patch.gz" | patch -Np1 || exit $ERROR_PATCH
  fi
done

if echo [[PATCH URLS]] | grep -q -v "PATCH URLS"; then
  for patch_url in [[PATCH URLS]]; do
    patch="`basename $patch_url`"
    if [ ! -s "$SRC_DIR/$patch" ]; then
      wget "$patch_url" -O "$SRC_DIR/$patch" || exit $ERROR_WGET
    fi
    if [ "`basename $patch .gz`" != "$patch" ]; then
      gzip -dc $SRC_DIR/$patch | patch -Np1 || exit $ERROR_PATCH
    elif [ "`basename $patch .bz2`" != "$patch" ]; then
      bzip2 -dc $SRC_DIR/$patch | patch -Np1 || exit $ERROR_PATCH
    else
      patch -Np1 < "$SRC_DIR/$patch" || exit $ERROR_PATCH
    fi
  done
fi

# Compile
make $NUMJOBS || exit $ERROR_MAKE

# Install
mkdir -p $PKG/usr/sbin $PKG/var/spool/anacron $PKG/usr/man/man5 $PKG/usr/man/man8 $PKG/etc

cp anacron $PKG/usr/sbin
cp anacrontab.5 $PKG/usr/man/man5
cp anacron.8 $PKG/usr/man/man8
cp $CWD/anacrontab.new $PKG/etc

gzip $PKG/usr/man/man5/anacrontab.5
gzip $PKG/usr/man/man8/anacron.8

# Strip binaries
( cd "$PKG"
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null
)

# Install documentation
DOCS="COPYING ChangeLog README TODO"
mkdir -p "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION" || exit $ERROR_MKDIR
for doc in $DOCS; do
  if [ -f "$doc" ]; then
    cp -a $doc "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION"
  fi
done

# Add package description (slack-desc)
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
cat << EODESC > "$PKG/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------------------------------------------------------|
anacron: anacron (periodic command scheduler)
anacron:
anacron: Anacron is a periodic command scheduler. It executes commands at
anacron: intervals specified in days. Unlike cron, it does not assume that the
anacron: system is running continuously. It can therefore be used to control
anacron: the execution of daily, weekly, and monthly jobs (or anything with
anacron: a period of n days), on systems that don't run 24 hours a day. When
anacron: installed and configured properly, Anacron will make sure that the
anacron: commands are run at the specified intervals as closely as
anacron: machine-uptime permits.
anacron:
EODESC

# Add a post-installation script (doinst.sh)
cat << EOSCRIPT > "$PKG/install/doinst.sh"
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  OLD="\$(dirname \$NEW)/\$(basename \$OLD .sample)"
  OLD="\$(dirname \$NEW)/\$(basename \$OLD .dist)"

  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
    # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

mkgroup() {
  GROUP="\$1"
  if ! grep -qe "^\$GROUP:" etc/group; then
    echo Creating group \$GROUP...
    chroot . /usr/sbin/groupadd \$GROUP
  fi
}

mkuser() {
  USER="\$1"
  if [ ! -z "\$2" ]; then
    GROUP="\$2"
  else
    GROUP="\$USER"
  fi
  if ! grep -qe "^\$USER:" etc/passwd; then
    echo Creating user \$USER...
    chroot . /usr/sbin/useradd \$USER -g \$GROUP
  fi
}

config etc/anacrontab.new
EOSCRIPT

# Build the package
cd "$PKG"
makepkg -l y -c n "$REPOS/$PKG_NAME-$PKG_VERSION-$ARCH-$BUILD.tgz" || exit $ERROR_MKPKG

# Delete source and build directories if requested
if [ "$CLEANUP" == "yes" ]; then
  rm -rf "$PKG_WORK" "$PKG"
fi