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

# protobuf.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# 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

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

# Apply patches:
cat $CWD/soversion.patch | patch -p1 --verbose || exit 1

# Configure:
mkdir cmake-build
pushd cmake-build
cmake \
   -DCMAKE_C_FLAGS="$SLKCFLAGS" \
   -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
   -DCMAKE_INSTALL_PREFIX=/usr \
   -DCMAKE_INSTALL_LIBDIR="lib$LIBDIRSUFFIX" \
   -DDOC_INSTALL_DIR="doc" \
   -DMAN_INSTALL_DIR=/usr/man \
   -Dprotobuf_BUILD_TESTS=OFF \
   -Dprotobuf_ABSL_PROVIDER=package \
   -Dprotobuf_BUILD_SHARED_LIBS=ON \
   .. || failconfig

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

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

# Don't use the python bindings included in the main tarball, as they are
# incomplete without further processing. Use the ones fetched from
# https://pypi.python.org/pypi/protobuf that are ready to go:
PYBINDING=${PYBINDING:-$(echo $CWD/python-protobuf/protobuf-*.tar.?z | rev | cut -f 1 -d - | cut -f 3- -d . | rev)}
tar xf $CWD/python-protobuf/protobuf-${PYBINDING}.tar.?z
pushd protobuf-${PYBINDING} || failextract
slackhousekeeping

LDFLAGS+=" -L$TMPBUILD/$PKGNAM-$VERSION/build" \
PROTOC="$TMPBUILD/$PKGNAM-$VERSION/build/protoc" \
python3 -m build --wheel --no-isolation || failmake
python3 -m installer --destdir "$PKG" dist/*.whl || failinstall
mkdir -vpm755 $PKG/usr/doc/python-protobuf-${PYBINDING}
cp -fav \
  *.md *.rst *.txt LICENSE PKG-INFO \
  $PKG/usr/doc/python-protobuf-${PYBINDING}
popd

# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav \
  CODE_OF_CONDUCT* CONTRIBUTING* CONTRIBUTORS* LICENSE* README* SECURITY* \
  $PKG/usr/doc/$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