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#!/bin/bash

# Slackware build script for grpc

# Copyright 2019-2020 Larry Hajali <larryhaja[at]gmail[dot]com>
# Copyright 2024 Isaac Yu <isaacyu@protonmail.com>
# 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=grpc
VERSION=${VERSION:-1.62.1}
OPENCENSUS_VERSION=${OPENCENSUS_VERSION:-0.3.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

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

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

# Use third party opencensus-proto tarball
rm -rf third_party/opencensus-proto
tar xvf $CWD/opencensus-proto-${OPENCENSUS_VERSION}.tar.gz -C third_party
ln -s opencensus-proto-${OPENCENSUS_VERSION} third_party/opencensus-proto

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 {} \;

sed -i 's|^prefix ?= /usr/local|prefix ?= /usr|' Makefile

# Build instructions adapted from the Arch Linux PKGBUILD:
# https://gitlab.archlinux.org/archlinux/packaging/packages/grpc/-/blob/main/PKGBUILD
# However, this SlackBuild does not build tests (therefore, grpc-cli will not be installed)
cmake -Bbuild \
  -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DgRPC_INSTALL_LIBDIR=lib${LIBDIRSUFFIX} \
  -DgRPC_INSTALL_CMAKEDIR=lib${LIBDIRSUFFIX}/cmake/$PRGNAM \
  -DCMAKE_BUILD_TYPE=Release \
  -DgRPC_INSTALL=ON \
  -DBUILD_SHARED_LIBS=ON \
  -DCMAKE_CXX_STANDARD=17 \
  -DCMAKE_SKIP_INSTALL_RPATH=ON \
  -DgRPC_BUILD_TESTS=OFF \
  -DgRPC_BUILD_CODEGEN=ON \
  -DgRPC_BUILD_CSHARP_EXT=ON \
  -DgRPC_BACKWARDS_COMPATIBILITY_MODE=OFF \
  -DgRPC_ZLIB_PROVIDER='package' \
  -DgRPC_CARES_PROVIDER='package' \
  -DgRPC_RE2_PROVIDER='package' \
  -DgRPC_SSL_PROVIDER='package' \
  -DgRPC_PROTOBUF_PROVIDER='package' \
  -DgRPC_PROTOBUF_PACKAGE_TYPE='MODULE' \
  -DgRPC_BENCHMARK_PROVIDER:STRING='package' \
  -DgRPC_ABSL_PROVIDER:STRING='package' \
  -DgRPC_USE_PROTO_LITE=OFF \
  -DgRPC_BUILD_GRPC_CPP_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_CSHARP_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_NODE_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_OBJECTIVE_C_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_PHP_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_PYTHON_PLUGIN=ON \
  -DgRPC_BUILD_GRPC_RUBY_PLUGIN=ON \
  -GNinja 

cd build
  cmake --build .
  cmake --install . --prefix "$PKG/usr"
cd ../

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

# All the .md files
MD=( BUILDING.md CODE-OF-CONDUCT.md CONCEPTS.md CONTRIBUTING.md \
  GOVERNANCE.md MAINTAINERS.md MANIFEST.md README.md SECURITY.md TROUBLESHOOTING.md)

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a AUTHORS ${MD[@]} LICENSE $PKG/usr/doc/$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