#!/bin/sh

# Slackware build script for amdgpu-opencl-driver
#
# Copyright 2020  Edward W. Koenig <kingbeowulf -at- gmail.com>
# 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=amdgpu-opencl
SRCNAM=amdgpu-pro
SRCVER=${SRCVER:-20.40-1147286}
DISTRO=${DISTRO:-ubuntu-20.04}
VERSION=${VERSION:-20.40}
BUILD=${BUILD:-1}
TAG=${TAG:-_kb}
COMPAT32=${COMPAT32:-no}

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 [ "$ARCH" = "i586" ]; then
  DEBARCH="i386"
  DRIARCH="i386"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  DEBARCH="amd64"
  DRIARCH="x86_64"
  LIBDIRSUFFIX="64"
else
  echo "Package for $(uname -m) architecture is not available."
  exit 1
fi

set -eu

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf ${SRCNAM}-${SRCVER}
mkdir -p $TMP $PKG $OUTPUT $PKG/install

# Extract main tarball
tar -xvf $CWD/${SRCNAM}-${SRCVER}-${DISTRO}.tar.xz
cd $PKG

# For loop to extract all the opencl related .deb archives from the main tarball
for i in $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/clinfo-${SRCNAM}_${SRCVER}_${DEBARCH}.deb \
         $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-${SRCNAM}-comgr_${SRCVER}_${DEBARCH}.deb \
	 $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-${SRCNAM}-dev_${SRCVER}_${DEBARCH}.deb \
	 $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-${SRCNAM}-icd_${SRCVER}_${DEBARCH}.deb \
	 $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-${SRCNAM}_${SRCVER}_${DEBARCH}.deb \
	 $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-orca-${SRCNAM}-icd_${SRCVER}_${DEBARCH}.deb
do
  ar p $i data.tar.xz | unxz | tar xv
done

# move to sane locations
mkdir -p $PKG/usr/{bin,lib$LIBDIRSUFFIX} $PKG/usr/doc/$PRGNAM-$VERSION 
mv $PKG/opt/${SRCNAM}/bin/clinfo $PKG/usr/bin/clinfo
mv $PKG/opt/${SRCNAM}/lib/x86_64-linux-gnu/* $PKG/usr/lib$LIBDIRSUFFIX
mv $PKG/usr/share/doc/* $PKG/usr/doc/$PRGNAM-$VERSION
rm -rf $PKG/usr/share
rm -rf $PKG/opt

# Now, let's get multilib set up if the system has it
if [ "$COMPAT32" == "yes" ]; then

  # Let's set up 32-bit locations
  mkdir -p $PKG/usr/bin/32 $PKG/usr/lib
  cd $PKG
  for i in $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/clinfo-${SRCNAM}_${SRCVER}_i386.deb \
	   $TMP/${SRCNAM}-${SRCVER}-${DISTRO}/opencl-orca-${SRCNAM}-icd_${SRCVER}_i386.deb
  do
    ar p $i data.tar.xz | unxz | tar xv
  done

  mkdir -p $PKG/usr/bin/32 $PKG/usr/lib
  mv $PKG/opt/${SRCNAM}/bin/clinfo $PKG/usr/bin/32/clinfo
  mv $PKG/opt/${SRCNAM}/lib/i386-linux-gnu/* $PKG/usr/lib
  rm -rf $PKG/usr/share
  rm -rf $PKG/opt

fi

# Set proper permissions
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 {} \;

# Strip binaries and libraries
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
  
# Add the SlackBuild to the doc directory
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}