#!/bin/sh
# Heavily based on the Slackware 12.2 SlackBuild
# Slackware build script for Gens - A Sega Genesis/MegaCD/32X emulator.
# URL: http://gens.consolemul.com
# Packager: Luigi "Reilly" Cozzolino

# Exit on most errors:
set -e

#### SECTION TARBALL ########
TARNAME="gens"
TARVERSION="2.15.5"
TARTYPE="tar.gz"
TARBALL="${TARNAME}-$TARVERSION.$TARTYPE"
SOURCEDIR="${TARNAME}-$TARVERSION"
#### END SECTION TARBALL ####

#### SECTION PACKAGE ########
PKGNAM="gens"
VERSION="$TARVERSION"
ARCH=${ARCH:-i486}
BUILD=1lc
#### END SECTION PACKAGE ####

CWD=$(pwd)
TMP=${TMP:-$HOME/PKGS}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
fi

# Number of jobs to compile at once:
if [ -z "$NUMJOBS" ]; then
  NUMJOBS=-j4
fi

PKG=$TMP/package-${PKGNAM}
rm -rf $PKG
mkdir -p $PKG

cd $TMP
rm -rf ${SOURCEDIR}
clear
sleep 1
echo ; echo ; echo
echo "+==========================================================="
echo -e "|\033[01;32m Building\033[00m \033[01;31m$TARBALL\033[00m"
echo "+==========================================================="
sleep 5
# Checking tarball type...
[ "$TARTYPE" = "tar.gz" -o "$TARTYPE" = "tgz" ] && switch="xvzf"
[ "$TARTYPE" = "tar.bz2" -o "$TARTYPE" = "tbz" ] && switch="xvjf"
# and finally extract it:
tar $switch $CWD/$TARBALL || exit 1
cd ${SOURCEDIR}

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . -perm 666 -exec chmod 644 {} \;
find . -perm 664 -exec chmod 644 {} \;
find . -perm 600 -exec chmod 644 {} \;
find . -perm 444 -exec chmod 644 {} \;
find . -perm 400 -exec chmod 644 {} \;
find . -perm 440 -exec chmod 644 {} \;
find . -perm 777 -exec chmod 755 {} \;
find . -perm 775 -exec chmod 755 {} \;
find . -perm 511 -exec chmod 755 {} \;
find . -perm 711 -exec chmod 755 {} \;
find . -perm 555 -exec chmod 755 {} \;

# Apply some patches:
zcat $CWD/patches/gens-2.15.2-romsdir.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/gens-2.15.2-execstack.patch.gz | patch -p1 --verbose || exit 1

# Configure:
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --bindir=/usr/games \
  --datadir=/usr/share/games \
  --build=$ARCH-slackware-linux || exit 1

# Build and install:
make $NUMJOBS || exit 1
make install DESTDIR=$PKG || exit 1

# Strip binaries and libraries:
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Add and convert some image icon file:
#mkdir -p $PKG/usr/share/pixmaps
#convert -delete 0 pixmaps/Gens2.ico $PKG/usr/share/pixmaps/gens.png

# Add a desktop file:
mkdir -p $PKG/usr/share/applications
cat > $PKG/usr/share/applications/gens.desktop << "EOF"
[Desktop Entry]
Encoding=UTF-8
Name=Gens
Comment=Gens is a win32/unix Sega Genesis / Sega CD / Sega 32X emulator.
Exec=gens
Terminal=false
Type=Application
Categories=Application;Game;
Icon=/usr/share/games/gens/Gens2.ico
StartupNotify=false
EOF

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  AUTHORS BUGS INSTALL README* COPYING *.txt \
  $PKG/usr/doc/${PKGNAM}-$VERSION

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

cd $PKG
requiredbuilder -v -y -s $CWD $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$VERSION-$ARCH-$BUILD.tgz

# Checksum `md5' file creation:
( cd $TMP ; md5sum ${PKGNAM}-$VERSION-$ARCH-$BUILD.tgz > ${PKGNAM}-$VERSION-$ARCH-$BUILD.md5 )

# Final touches:
( cd $TMP ; cat $PKG/install/slack-desc | grep "^${PKGNAM}:" > ${PKGNAM}-$VERSION-$ARCH-$BUILD.txt )

# Clean up the extra stuff:
if [ "$1" = "--cleanup" -o "$1" = "-c" ]; then
  rm -rf $TMP/${SOURCEDIR}
  rm -rf $PKG
fi