#!/bin/sh

# Copyright 2008, 2009, 2010  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.

# Build RPM (of all things) for Slackware.

VERSION=${VERSION:-4.8.0}
BUILD=${BUILD:-1}

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

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "arm" ]; then
  SLKCFLAGS="-O2 -march=armv4 -mtune=xscale"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "armel" ]; then
  SLKCFLAGS="-O2 -march=armv4t"
  LIBDIRSUFFIX=""
fi

NSS_INC="/usr/include/seamonkey/nss"
NSPR_INC="/usr/include/seamonkey/nspr"
DB_INC="/usr/include/db44"
NSS_LIBS="/usr/lib${LIBDIRSUFFIX}/seamonkey"

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

rm -rf $PKG
mkdir -p $TMP $PKG

cd $TMP
rm -rf rpm-$VERSION
xz -dc $CWD/rpm-$VERSION.tar.xz | tar xvf - || exit 1
cd rpm-$VERSION
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 {} \;

# We have to tell it where to find Seamonkey's NSS.
# Also, --enable-sqlite3 needs "-ldl" in LDFLAGS
# And --enable-broken-chown fits, as ours follows symlinks.
CFLAGS="$SLKCFLAGS -I$NSS_INC -I$NSPR_INC -I$DB_INC" \
LDFLAGS="-L${NSS_LIBS} -ldl" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --localstatedir=/var \
  --mandir=/usr/man \
  --enable-python \
  --with-external-db \
  --enable-broken-chown \
  --without-hackingdocs \
  --without-selinux \
  --without-lua \
  --without-dmalloc \
  --enable-sqlite3 \
  --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

# Here's a bug - /var/tmp should NOT have mode 0755
rmdir $PKG/var/tmp || exit 1

# 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
)

# Initialize a dummy package database
mkdir -p $PKG/var/lib/rpm/tmp
zcat $CWD/Packages.gz > $PKG/var/lib/rpm/tmp/Packages

# Install docs
mkdir -p $PKG/usr/doc/rpm-$VERSION
cp -a \
  CHANGES COPYING CREDITS GROUPS INSTALL README TODO doc/manual \
    $PKG/usr/doc/rpm-$VERSION

mkdir -p $PKG/install
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/rpm-$VERSION-$ARCH-$BUILD.txz