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

# zstd.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2018  Eric Hameleers, Eindhoven, Netherlands
# Copyright 2018  Patrick J. Volkerding, Sebeka, MN, 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

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Extract source:
tar xvvf $CWD/$PKGNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $PKGNAM-$VERSION || exit 1
slackhousekeeping

# Apply patches:
zcat $CWD/zstd.dont.link.pzstd.to.static.libzstd.a.diff.gz | patch -p1 --verbose || exit 1

# Build:
make $NUMJOBS CFLAGS="-fPIC $SLKCFLAGS" || failmake

# Install into package framework:
make \
  prefix=/usr \
  libdir=/usr/lib${LIBDIRSUFFIX} \
  mandir=/usr/man \
  DESTDIR=$PKG \
  install || exit 1

# Build pzstd.  In Slackware x86 this is built prior to make install, but
# that creates a dependency.  We'll use the newly-installed stuff in $PKG
# to get through this:
LD_LIBRARY_PATH=$PKG/usr/lib${LIBDIRSUFFIX} \
make $NUMJOBS CFLAGS="$SLKCFLAGS" -C contrib/pzstd || failmake
# Install it:
install -Dm755 contrib/pzstd/pzstd $PKG/usr/bin/pzstd || exit 1

# Don't ship static library:
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/*.a

# zstdmt as the same as zstd, so just make a symlink:
( cd $PKG/usr/bin
  ln -vsf zstd zstdmt )

# It might be advisable to have the libraries in /lib${LIBDIRSUFFIX}:
mkdir -p $PKG/lib${LIBDIRSUFFIX}
mv -fv $PKG/usr/lib${LIBDIRSUFFIX}/libzstd.so.* $PKG/lib${LIBDIRSUFFIX}
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  rm -f libzstd.so
  ln -vsf ../../lib${LIBDIRSUFFIX}/libzstd.so.? libzstd.so )

# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav \
  CONTRIBUTING* COPYING* LICENSE NEWS README* TESTING* \
  $PKG/usr/doc/$PKGNAM-$VERSION
#changelogliposuction CHANGES $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