#!/bin/bash

# Slackware build script for tuxnes
# Written by Kyle Guinn <elyk03@gmail.com>
# Updated slightly by B. Watson <urchlay@slackware.uk>, with permission

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=tuxnes
VERSION=${VERSION:-0.75}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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"
else
  cat <<EOF
$PRGNAM is partly written in x86 assembly language, therefore cannot
be built on the current architecture of "$ARCH".

Supported ARCH settings are "i586" and "i686".
EOF
  exit 1
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
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 \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+

# __FUNCTION__ is now a variable instead of a static string/macro in GCC 3.4+.
# Replace __FUNCTION__ with the actual function names where it appears.
patch -p0 < $CWD/patches/emu.c.patch

# Regenerate the build system so that it will support $CFLAGS.
patch -p0 < $CWD/patches/configure.in.patch
rm acconfig.h install-sh missing mkinstalldirs
aclocal
autoheader
automake -a
autoconf

CFLAGS="$SLKCFLAGS -fno-strict-aliasing -fcommon" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --with-x \
  --build=$ARCH-slackware-linux

make
make install-strip DESTDIR=$PKG

# If the gtuxnes source tarball exists, install that too.
# http://www.sourcefiles.org/Emulators/Videogames/gtuxnes-0.75.tar.gz
( cd $TMP
  PRGNAM=gtuxnes
  VERSION=0.75
  if [ -e $CWD/$PRGNAM-$VERSION.tar.gz ]; then
    rm -rf $PRGNAM-$VERSION
    tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
    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 \
     \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
      -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

    # Patch the Makefile to support $CFLAGS
    patch -p0 < $CWD/patches/Makefile.patch
    CFLAGS="$SLKCFLAGS" make
    install -s -m0755 -oroot -groot $PRGNAM $PKG/usr/bin

    # Icon by Deleket (Jojo Mendoza), downloaded from:
    # http://www.iconarchive.com/show/gaming-icons-by-deleket/Nintendo-NES-icon.html
    mkdir -p $PKG/usr/share/pixmaps
    cat $CWD/$PRGNAM.png > $PKG/usr/share/pixmaps/$PRGNAM.png

    mkdir -p $PKG/usr/share/applications
    cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

    mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
    cp -a AUTHORS CHANGES COPYING README TODO \
      $PKG/usr/doc/$PRGNAM-$VERSION
  fi
) || exit 1

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a AUTHORS BUGS CHANGES COPYING ChangeLog NEWS README THANKS \
  $PKG/usr/doc/$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

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