#!/bin/bash

# Slackware build script for pngquant

# Ryan P.C. McQuen | Everett, WA | ryanpcmcquen@member.fsf.org
# 2017 - Dhaby Xiloj - <slack.dhabyx@gmail.com>

# Copyright 2013-2015 Kyle Guinn <elyk03@gmail.com>, 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.

# 20230701 bkw: Modified by SlackBuilds.org, BUILD=2:
# - strip binary and shared lib.
# - remove INSTALL from doc dir (compile instructions only).
# - add README note saying OPENMP=yes is broken.
#
# Note: upstream switched from C to Rust. The last C release was
# 2.18.0 (Feb 3, 2023), which this build should probably be updated
# for (assuming it doesn't break imgmin or tuxpaint, which depend on
# this).
#
# The 3.0.x releases don't look like they're API compatible. I would
# rather stab myself in the eye with a rusty fork than deal with Rust,
# but someone might want to look into 3.0.x (possibly as a separate
# SlackBuild, leaving this one at 2.18.0).

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

PRGNAM=pngquant
VERSION=${VERSION:-2.9.0}
BUILD=${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}

DOCS="CHANGELOG COPYRIGHT README.md"

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

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION-src.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go-w,a+rX-st .

# 20230701 bkw: building with OPENMP=yes is broken on Slackware 15.0,
# which I suppose is why this was disabled by default. I thought using
# CC=clang might help, but it doesn't.
if [ "${OPENMP:-no}" != "no" ]; then
  openmp="--with-openmp"
fi

./configure \
  --prefix=/usr \
  $openmp \
  CFLAGS="$SLKCFLAGS"

sed -i -e 's#share/man#man#' Makefile

make
make -C lib shared
strip $PRGNAM
make PREFIX=$PKG/usr install

# manual installation of libraries:
install -s -D -m0755 lib/libimagequant.so.0 $PKG/usr/lib${LIBDIRSUFFIX}/libimagequant.so.0
install    -D -m0644 lib/libimagequant.a $PKG/usr/lib${LIBDIRSUFFIX}/libimagequant.a
install    -D -m0644 lib/libimagequant.h $PKG/usr/include/libimagequant.h

gzip -9 $PKG/usr/man/man*/*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$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