#!/bin/sh

# Slackware build script for zsnes

# Copyright (c) 2008, Antonio Hernández Blas <hba.nihilismus@gmail.com>
# Copyright (c) 2010, 2012, Carlos Corbacho <carlos@strangeworlds.co.uk>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 1.- Redistributions of source code 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.

PRGNAM=zsnes
VERSION=${VERSION:-1.51b}
BUILD=${BUILD:-3}
TAG=${TAG:-_SBo}

ZSNESSRC="$(echo $VERSION | tr -d .)src"
ZSNESDIR="_$(echo $VERSION | tr . _)"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  printf "\n  Error: $PRGNAM won't compile on $ARCH \n \n"
  exit 1
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG/usr $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM$ZSNESSRC.tar.bz2
# Fix the directory tree in zsnes:
mv $PRGNAM$ZSNESDIR $PRGNAM-$VERSION
mv $PRGNAM-$VERSION/src/* $PRGNAM-$VERSION
cd $PRGNAM-$VERSION

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# GCC 4.7 fixes from Debian
cat $CWD/0012-Fix-build-with-gcc-4.7.patch | patch -p2 --verbose

# Fix for libpng16 (thanks to Arch Linux)
# https://projects.archlinux.org/svntogit/community.git/plain/trunk/zsnes-1.51-libpng15.patch?h=packages/zsnes
patch -p1 < $CWD/zsnes-1.51-libpng15.patch

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
force_arch="$ARCH" \
./configure \
  --prefix=/usr \
  --enable-release \
  --disable-cpucheck \
  --disable-debugger

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
force_arch="$ARCH" \
make
make install DESTDIR=$PKG

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

( cd $PKG/usr/man || exit 1
  find . -type f -exec gzip -9 {} \;
  for i in $(find . -type l) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)

# Add a .desktop file and icon for good menu integration
mkdir -p $PKG/usr/share/{applications,pixmaps}
install -m 0644 $CWD/zsnes.desktop $PKG/usr/share/applications/zsnes.desktop
install -m 0644 $CWD/zsnes.png $PKG/usr/share/pixmaps/zsnes.png

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a docs/* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
