#!/bin/sh

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

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

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

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

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$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 "i486" 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 .
chmod -R u+w,go+r-w,a-s .

# __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="$SLKCFLAGS -fno-strict-aliasing" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --with-x \
  --build=$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 .
    chmod -R u+w,go+r-w,a-s .

    # 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:-tgz}