#!/bin/sh
# Copyright (c) 2006 Eric Hameleers <alien@sox.homeip.net>
# Distributed under the terms of the GNU General Public License, Version 2
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       device-mapper
# URL:       ftp://sources.redhat.com/pub/dm/
# Needs:     
# Changelog:
# 1.01.05-1:   03/Nov/2005 by Eric Hameleers <alien@slackware.com>
#            * Initial build.
# 
# Run 'sh SlackBuild --cleanup' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# --- INIT ---
# Set initial variables:
CWD=`pwd`
if [ "$TMP" = "" ]; then
  TMP=/tmp
fi

PRGNAM=device-mapper
VERSION=1.01.05
ARCH=${ARCH:-i486}
BUILD=1

DOCS="COPYING COPYING.LIB INSTALL INTRO README VERSION WHATS_NEW"

# The package has no kernel module. But if you compile it on a 2.4 kernel,
# it will proceed to patch your kernel sources. Since you should use the
# device-mapper on 2.6 kernels anyway, the KVER parameter gives you the
# opportunity to compile the package while running a 2.4 kernel (as long as
# you do have the sources for a 2.6 kernel installed!)
KVER=${KVER:-`uname -r`}
KSRC=${KSRC:-/lib/modules/$KVER/build}

# If you have more source files, list them here as SOURCE[1], SOURCE[2], etc.
# If you know the URL for a source file, you can put that into the SRCURL[]
# variable, and the SlackBuild script will try to download it for you.

SOURCE[0]="${PRGNAM}.${VERSION}.tgz"
SRCURL[0]="ftp://sources.redhat.com/pub/dm/device-mapper.1.01.05.tgz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mcpu=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "athlon-xp" ]; then
  SLKCFLAGS="-march=athlon-xp -O3 -pipe -fomit-frame-pointer"
fi

PKG=$TMP/package-$PRGNAM

if [ ! -d $TMP/tmp-$PRGNAM ]; then
  mkdir -p $TMP/tmp-$PRGNAM # location to build the source
elif [ "$1" != "--oldbuild" ]; then
  # If the "--oldbuild" parameter is present, we keep
  #  the old build files and continue;
  # By default we remove the remnants of previous build and continue:
  rm -rf $TMP/tmp-$PRGNAM/*
fi

if [ ! -d $PKG ]; then
  mkdir -p $PKG # place for the package to be built
fi


# --- SOURCE FILE AVAILABILITY ---

for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if ! [ -f ${CWD}/${SOURCE[$i]} ]; then
    if ! [ "${SRCURL[$i]}" = "" ]; then
      echo "Source '${SOURCE[$i]}' not available yet... will download now:"
      wget -nv -O "${CWD}/${SOURCE[$i]}" "${SRCURL[$i]}"
      if [ $? -ne 0 ]; then
        echo "Downloading '${SOURCE[$i]}' failed... aborting the build."
        exit 1
      fi
    else
      echo "File '${SOURCE[$i]}' not available... aborting the build."
      exit 1
    fi
  fi
done

if [ "$1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

# Safety net 8-)
if [ "$PKG" = "" -o "$PKG" = "/" ] ; then
  cat <<-EOT
	Your script sucks!!!
	You were about to delete the contents of your computer's hard disk!
	Please provide a value for the variable 'PKG'.
	EOT
  exit 1
fi
# We always erase old package's contents:
rm -rf $PKG/*

cd $PKG

# Explode the package framework:
if [ -f $CWD/_$PRGNAM.tar.gz ]; then
  explodepkg $CWD/_$PRGNAM.tar.gz
fi

cd $TMP/tmp-$PRGNAM


# --- TARBALL EXTRACTION,PATCH,MODIFY ---

echo "Extracting the program tarball(s) for $PRGNAM..."
for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if `file $CWD/${SOURCE[$i]} | grep -q ": bzip2"`; then
    tar -xjvf $CWD/${SOURCE[$i]}
  elif `file $CWD/${SOURCE[$i]} | grep -qi ": zip"`; then
    unzip $CWD/${SOURCE[$i]}
  else
    tar -xzvf $CWD/${SOURCE[$i]}
  fi
done
mv ${PRGNAM}.${VERSION} ${PRGNAM}-${VERSION}
cd ${PRGNAM}-${VERSION}

chown -R root.root *
find . -perm 777 -exec chmod 755 {} \;


# --- BUILDING ---

echo Building ...

CFLAGS="$SLKCFLAGS" \
./configure --prefix=/usr \
            --with-device-mode=0660\
            --with-device-gid=6 \
            --enable-static_link \
            --with-kernel-version=$KVER \
            --with-kernel-dir=$KSRC \
            2>&1 | tee $CWD/configure-${PRGNAM}.log
make 2>&1 | tee $CWD/make-${PRGNAM}.log

#
# Install all the needed stuff to the package dir
#
# Use installwatch if available:
which installwatch > /dev/null 2>&1
if [ $? == 0 ]; then
  installwatch -o $CWD/install-${PRGNAM}.log make DESTDIR=$PKG install
else
  make DESTDIR=$PKG install 2>&1 |tee $CWD/install-${PRGNAM}.log
fi


# --- DOCUMENTATION ---

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS \
      $PKG/usr/doc/$PRGNAM-$VERSION
chmod -R a-w $PKG/usr/doc/$PRGNAM-$VERSION/*

# Move incorrectly installed man pages if any
mv $PKG/usr/share/man $PKG/usr/ && rmdir $PKG/usr/share
# Compress the man page(s)
gzip -9f $PKG/usr/man/*/*
gzip -9f $PKG/usr/man/*/*/*

# 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
)


# --- OWNERSHIP, RIGHTS ---

chmod -R o-w $PKG
chown root:bin $PKG/usr/bin/* $PKG/usr/sbin/* $PKG/bin/* $PKG/sbin/* \
               $PKG/usr/X11R6/bin/* $PKG/opt/kde/bin/* 2>/dev/null


# --- PACKAGE DESCRIPTION ---

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
if [ -f $CWD/doinst.sh ]; then
  cat $CWD/doinst.sh > $PKG/install/doinst.sh
fi
# I give in :-/
if [ -f $CWD/slack-requires ]; then
  cat $CWD/slack-requires > $PKG/install/slack-requires
fi


# --- BUILDING ---

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $TMP/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz \
  2>&1 | tee $CWD/makepkg-${PRGNAM}.log
(cd $TMP && md5sum ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz > ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz.md5)
cat $CWD/slack-desc | grep "^${PRGNAM}" > $TMP/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.txt
if [ -f $CWD/slack-requires ]; then
  cat $CWD/slack-requires > $TMP/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.dep
fi


# --- CLEANUP ---

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
fi