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#!/bin/sh

# Slackware build script for libretro-samples

# Copyright 2016 Hunter Sezen California, 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.

PRGNAM=libretro-samples
VERSION=${VERSION:-2016.09.22_f06a8d1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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}

# requires patching the Makefile to properly use
# the default CFLAGS and CXXFLAGS are probably fine
if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

DEBUG=${DEBUG:-0}
VULKAN=${VULKAN:-0}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
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 {} \;

if [ -x /usr/bin/fpc ]; then
  PASCAL_PONG="demos/game/pascal_pong"
else
  PASCAL_PONG=""
fi

if [ "$VULKAN" = "1" ]; then
  VULKAN="graphics/vulkan/vk_async_compute graphics/vulkan/vk_rendering"
else
  VULKAN=""
fi

SAMPLES="audio/audio_callback \
         audio/audio_no_callback \
         demos/game/cruzes \
         graphics/opengl/libretro_test_gl_compute_shaders \
         graphics/opengl/libretro_test_gl_fixedfunction \
         graphics/opengl/libretro_test_gl_shaders \
         graphics/software/rendering \
         graphics/software/rendering_direct_to_vram \
         input/button_test \
         $PASCAL_PONG \
         tests/test \
         tests/test_advanced \
         $VULKAN"

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION

for core in $SAMPLES; do
  base=$(basename $core)

  case $base in
    audio_callback)                    LIBNAM=test${base}_libretro               ;;
    audio_no_callback)                 LIBNAM=test${base}_libretro               ;;
    button_test)                       LIBNAM=${base}_libretro                   ;;
    cruzes)                            LIBNAM=${base}_libretro                   ;;
    libretro_test_gl_compute_shaders)  LIBNAM=testgl_compute_shaders_libretro    ;;
    libretro_test_gl_fixedfunction)    LIBNAM=testgl_ff_libretro                 ;;
    libretro_test_gl_shaders)          LIBNAM=testgl_libretro                    ;;
    pascal_pong)                       LIBNAM=${base}_libretro                   ;;
    rendering)                         LIBNAM=testsw_libretro                    ;;
    rendering_direct_to_vram)          LIBNAM=testsw_vram_libretro               ;;
    test)                              LIBNAM=${base}_libretro                   ;;
    test_advanced)                     LIBNAM=advanced_tests_libretro            ;;
    vk_async_compute)                  LIBNAM=testvulkan_async_compute_libretro  ;;
    vk_rendering)                      LIBNAM=testvulkan_libretro                ;;
    *)                                 echo "$base not found" && exit 1          ;;
  esac

  if [ "$core" = "$PASCAL_PONG" ]; then
    fpc -o$core/$LIBNAM.so $core/pong.pas
    cp -a $core/LICENSE $PKG/usr/doc/$PRGNAM-$VERSION/LICENSE-$base
  else
    make -C $core DEBUG=$DEBUG
  fi

  install -Dm0644 $core/$LIBNAM.so $PKG/usr/lib${LIBDIRSUFFIX}/libretro/$LIBNAM.so
  install -Dm0644 $LIBNAM.info $PKG/usr/lib${LIBDIRSUFFIX}/libretro/info/$LIBNAM.info
  cp -a $core/README.md $PKG/usr/doc/$PRGNAM-$VERSION/README_$LIBNAM
done

if [ "${DEBUG:-0}" = "0" ]; then
  find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
    | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
fi

cp -a demos/game/cruzes/LICENSE $PKG/usr/doc/$PRGNAM-$VERSION/LICENSE-cruzes
cp -a license demos/game/cruzes/LICENSE-Carlito $PKG/usr/doc/$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}