#!/bin/sh

# Slackware build script for libav

# Copyright 2015 Dimitris Zlatanidis Orestiada, Greece
# 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=libav
VERSION=${VERSION:-11.4}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

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

# libav configure features

frei0r=""     ; [ "${FREI0R:-no}" != "no" ]     && frei0r="--enable-frei0r"
libbs2b=""    ; [ "${BS2B:-no}" != "no" ]       && libbs2b="--enable-libbs2b"
libdc1394=""  ; [ "${DC1394:-no}" != "no" ]     && libdc1394="--enable-libdc1394"
libfaac=""    ; [ "${FAAC:-no}" != "no" ]       && libfaac="--enable-libfaac"
libfdk_aac="" ; [ "${FDK_AAC:-no}" != "no" ]    && libfdk_aac="--enable-libfdk-aac"
libilbc=""    ; [ "${ILBC:-no}" != "no" ]       && libilbc="--enable-libilbc"
libmp3lame="" ; [ "${LAME:-no}" != "no" ]       && libmp3lame="--enable-libmp3lame"
libopus=""    ; [ "${OPUS:-no}" != "no" ]       && libopus="--enable-libopus"
libpulse=""   ; [ "${PULSEAUDIO:-no}" != "no" ] && libpulse="--enable-libpulse"
librtmp=""    ; [ "${RTMP:-no}" != "no" ]       && librtmp="--enable-librtmp"
libspeex=""   ; [ "${SPEEX:-no}" != "no" ]      && libspeex="--enable-libspeex"
libtwolame="" ; [ "${TWOLAME:-no}" != "no" ]    && libtwolame="--enable-libtwolame"
libvpx=""     ; [ "${VPX:-no}" != "no" ]        && libvpx="--enable-libvpx"
libwebp=""    ; [ "${WEBP:-no}" != "no" ]       && libwebp="--enable-libwebp"
libx264=""    ; [ "${X264:-no}" != "no" ]       && libx264="--enable-libx264"
libx265=""    ; [ "${X265:-no}" != "no" ]       && libx265="--enable-libx265"
libxiv=""     ; [ "${XIV:-no}" != "no" ]        && libxiv="--enable-libxvid"

libopencore_amrnb="" ; [ "${OPENCORE:-no}" != "no" ] && \
    libopencore_amrnb="--enable-libopencore-amrwb"
libopencv="" ; [ "${OPENCV:-no}" != "no" ] && \
    libopencv="--enable-libopencv"
libopenjpeg="" ; [ "${OPENJPEG:-no}" != "no" ] && \
    libopenjpeg="--enable-libopenjpeg"
libschroedinger="" ; [ "${SCHROEDINGER:-no}" != "no" ] && \
    libschroedinger="--enable-libschroedinger"

set -e

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

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --shlibdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --enable-gpl \
  --enable-version3 \
  --enable-nonfree \
  --disable-static \
  --enable-shared \
  --enable-bzlib \
  --enable-gnutls \
  --enable-libcdio \
  --enable-libfreetype \
  --enable-libtheora \
  --enable-libvorbis \
  --enable-openssl \
  --enable-x11grab \
  --enable-zlib \
  --disable-debug \
  $frei0r \
  $libbs2b \
  $libdc1394 \
  $libfaac \
  $libfdk_aac \
  $libilbc \
  $libmp3lame \
  $libopencore_amrnb \
  $libopencv \
  $libopenjpeg \
  $libopus \
  $libpulse \
  $librtmp \
  $libschroedinger \
  $libspeex \
  $libtwolame \
  $libvpx \
  $libwebp \
  $libx264 \
  $libx265 \
  $libxiv \
  --arch=$ARCH

make
make install DESTDIR=$PKG

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING* LICENSE README RELEASE $PKG/usr/doc/$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
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}