#!/bin/sh

# Copyright 2005-2008, 2009  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

VERSION=${VERSION:-2.5.4}
ARCH=${ARCH:-x86_64}
BUILD=${BUILD:-1}

NUMJOBS=${NUMJOBS:-" -j7 "}

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-grep

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
fi

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf grep-$VERSION
tar xvf $CWD/grep-$VERSION.tar.bz2 || exit 1
cd grep-$VERSION || exit 1
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -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="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --bindir=/bin \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --disable-perl-regexp \
  --build=$ARCH-slackware-linux

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# ****************************************************************************
# Makefile installs different binaries for each of grep, egrep, and fgrep
# This is how we used to do it...
#( cd $PKG/bin
#  rm -f egrep ; ln -sf grep egrep
#  rm -f fgrep ; ln -sf grep fgrep
#)
# ****************************************************************************

# Make symlinks in /usr/bin:
mkdir -p $PKG/usr/bin
( cd $PKG/usr/bin
  ln -sf ../../bin/grep .
  ln -sf ../../bin/egrep .
  ln -sf ../../bin/fgrep .
)

# Compress man pages
( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $(find . -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done
)

# Compress info pages
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*

mkdir -p $PKG/usr/doc/grep-$VERSION
cp -a \
  ABOUT-NLS AUTHORS COPYING* INSTALL NEWS README* THANKS TODO \
  $PKG/usr/doc/grep-$VERSION

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/grep-$VERSION-$ARCH-$BUILD.txz