#!/bin/bash

# Slackware build script for libavif

# Copyright 2022 Vijay Marcel
# 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.

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

PRGNAM=libavif
VERSION=${VERSION:-20221216_93035c1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}
GITNAM=${GITNAM:-93035c173c934813b16751872fbe2f535aa7086b}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
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}

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
trap 'echo "$0 FAILED at line $LINENO!" | tee $OUTPUT/error-${PRGNAM}.log' ERR

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
rm -rf $PRGNAM-$GITNAM
tar xvf $CWD/$PRGNAM-$GITNAM.tar.gz
cd $PRGNAM-$GITNAM
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 [ "$ARCH" = "x86_64" ]; then

echo "Builing for x86_64 Architecture"

cmake -B build -S $TMP/$PRGNAM-$GITNAM  \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DBUILD_SHARED_LIBS:BOOL=ON \
    -DAVIF_ENABLE_WERROR:BOOL=ON \
    -DAVIF_CODEC_AOM:BOOL=ON \
    -DAVIF_CODEC_AOM_DECODE:BOOL=ON \
    -DAVIF_CODEC_AOM_ENCODE:BOOL=ON \
    -DAVIF_CODEC_DAV1D:BOOL=ON \
    -DAVIF_CODEC_LIBGAV1:BOOL=OFF \
    -DAVIF_CODEC_RAV1E:BOOL=OFF \
    -DAVIF_CODEC_SVT:BOOL=ON \
    -DAVIF_BUILD_APPS:BOOL=ON \
    -DAVIF_BUILD_TESTS:BOOL=OFF \
    -DAVIF_ENABLE_GTEST:BOOL=OFF \
    -DAVIF_BUILD_MAN_PAGES:BOOL=ON \
    -DCMAKE_INSTALL_PREFIX:PATH=/usr \
    -DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib${LIBDIRSUFFIX} \
    -DCMAKE_INSTALL_BINDIR:PATH=/usr/bin \
    -DCMAKE_INSTALL_MANDIR=/usr/man \
    -DCMAKE_BUILD_TYPE=Release

make -C build
make -C build install DESTDIR=$PKG

rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

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

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

elif [ "$ARCH" = "i586" ]; then

echo "Builing for x86 Architecture"
echo "No man pages will be built for x86 architecture, Refer README and changelog for details"
echo "If you need Man Pages for x86 architecture you have to build pandoc from sources"

cmake -B build -S $TMP/$PRGNAM-$GITNAM  \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DBUILD_SHARED_LIBS:BOOL=ON \
    -DAVIF_ENABLE_WERROR:BOOL=ON \
    -DAVIF_CODEC_AOM:BOOL=ON \
    -DAVIF_CODEC_AOM_DECODE:BOOL=ON \
    -DAVIF_CODEC_AOM_ENCODE:BOOL=ON \
    -DAVIF_CODEC_DAV1D:BOOL=ON \
    -DAVIF_CODEC_LIBGAV1:BOOL=OFF \
    -DAVIF_CODEC_RAV1E:BOOL=OFF \
    -DAVIF_CODEC_SVT:BOOL=ON \
    -DAVIF_BUILD_APPS:BOOL=ON \
    -DAVIF_BUILD_TESTS:BOOL=OFF \
    -DAVIF_ENABLE_GTEST:BOOL=OFF \
    -DAVIF_BUILD_MAN_PAGES:BOOL=OFF \
    -DCMAKE_INSTALL_PREFIX:PATH=/usr \
    -DCMAKE_INSTALL_LIBDIR:PATH=/usr/lib${LIBDIRSUFFIX} \
    -DCMAKE_INSTALL_BINDIR:PATH=/usr/bin \
    -DCMAKE_INSTALL_MANDIR=/usr/man \
    -DCMAKE_BUILD_TYPE=Release

make -C build
make -C build install DESTDIR=$PKG

rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

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

else

echo "Unsupported Architecture, Aborting the build process ....."

fi

find $PKG -name perllocal.pod -o -name ".packlist" -o -name "*.bs" | xargs rm -f || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a  LICENSE README.md CHANGELOG.md doc/avifdec.1.md doc/avifenc.1.md  $PKG/usr/doc/$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