#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# aom.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2018-2023  Andrew Strong, Blue Mountains, Australia
# Copyright 2024  Patrick J. Volkerding, Sebeka, Minnesota, 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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Detect whether we're building for /patches:
# This function sets the variable 'SLACKPATCHING'
slack_findpkgstore_is_stablerelease

# Manually set the target CPU to enable optimisation:
case $ARCH in
   aarch64) SLKCONFARGS="-DAOM_TARGET_CPU=arm64 -DCONFIG_BIG_ENDIAN=0";;
esac

# Temporary build locations:
shm_tmp # Use /dev/shm if >8GB RAM is available & not mounted 'noexec'
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Extract source:
tar xf $CWD/$PKGNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $PKGNAM-$VERSION || failextract
slackhousekeeping

# Set local jobs if distcc isn't in use:
if ! echo $PATH | grep -q DISTCC ; then
  echo "Running without distcc, using local cores"
  NUMJOBS="-j$( nproc)"
fi

# Configure:
mkdir cmake-build
pushd cmake-build
cmake \
   \
   $SLKCONFARGS \
   \
   -DCMAKE_C_FLAGS="$SLKCFLAGS" \
   -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
   -DCMAKE_INSTALL_PREFIX=/usr \
   -DCMAKE_INSTALL_LIBDIR="lib$LIBDIRSUFFIX" \
   -DDOC_INSTALL_DIR="doc" \
   -DENABLE_NASM=1 \
   -DENABLE_DOCS=0 \
   -DBUILD_SHARED_LIBS=1 \
   -DENABLE_TESTS=0 \
   .. || failconfig

# Build:
make $NUMJOBS || make || failmake

# Install into package:
make install DESTDIR=$PKG || failinstall
popd

# No static libraries:
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/lib*.a

# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav \
  AUTHORS* CHANGELOG* LICENSE* PATENTS* README* \
  doc/AlgorithmDescription* \
  $PKG/usr/doc/$PKGNAM-$VERSION
changelogliposuction CHANGELOG $PKGNAM $VERSION # Trim down a "ChangeLog" file

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall        # strip all .a archives and all ELFs
#slackstriprpaths     # strip rpaths
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i      # compress man & info pages and delete usr/info/dir
slackslack           # set standard Slackware file/dir permissions and ownerships
slackdesc            # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links