#!/bin/sh
#
# Slackware build script for LevelDB
# Written by Mário Antunes (mario.antunes@av.it.pt)
# Modified by Rafael Tavares <mdrafaeltavares@gmail.com> for gfs (2021)

PRGNAM=$(basename $0 | cut -f1 -d.)
VERSION=${VERSION:-$(find . -maxdepth 1 -name "$PRGNAM-*.tar.?z*" | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}
TAG=${TAG:-_gfs}

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/gfs}
PKG=$TMP/pkg-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}
JOBS=${JOBS:-" -j$(expr $(getconf _NPROCESSORS_ONLN) \* 2 ) "}

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

# Build with snappy
SNAPPY=${SNAPPY:-yes}

set -e

UMASKBKP=$(umask)
umask 0022

DEPCHK=""
OPTDEP=""

if [ -z $VERSION ]
 then
 VERSION=1.9.0
fi

MDSCHK=12f11385cb58ae0de66d4bc2cc7f8194
DWNLCMD=${DWNLCMD:-"wget -c --no-check-certificate"}
SRCDOWN=${SRCDOWN:-"https://src.fedoraproject.org/repo/pkgs/leveldb/leveldb-$VERSION.tar.gz/12f11385cb58ae0de66d4bc2cc7f8194/leveldb-$VERSION.tar.gz"}

if [ -z $(find . -maxdepth 1 -name "$PRGNAM-$VERSION.tar.?z*") ]
then
 $DWNLCMD $SRCDOWN
else
 if md5sum -c <<<"$MDSCHK $(echo $PRGNAM-$VERSION.tar.?z*)";
  then
   continue
  else
   rm -rf $PRGNAM-$VERSION.tar.?z*
   $DWNLCMD $SRCDOWN
 fi
fi

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 \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

echo "echo \"PLATFORM_CFLAGS+=$SLKCFLAGS\" >> build_config.mk" >> build_detect_platform
echo "echo \"PLATFORM_CXXFLAGS+=$SLKCFLAGS\" >> build_config.mk" >> build_detect_platform
make $JOBS || make

mkdir -p $PKG/usr/include/leveldb
install include/leveldb/*.h $PKG/usr/include/leveldb

mkdir -p $PKG/usr/lib$LIBDIRSUFFIX
cp -a libleveldb.so* $PKG/usr/lib$LIBDIRSUFFIX

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README $PKG/usr/doc/$PRGNAM-$VERSION
cp -a doc/* $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc/$PRGNAM-$VERSION -type f -exec chmod 644 {} \;
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
#      |-----handy-ruler------------------------------------------------------|
cat <<EOT >$PKG/install/slack-desc
$PRGNAM:
$PRGNAM: leveldb (Google key-vale database)
$PRGNAM:
$PRGNAM: LevelDB is an open source on-disk key-value store written by Google
$PRGNAM: Fellows Jeffrey Dean and Sanjay Ghemawat, who built parts of Google's
$PRGNAM: platform. Inspired by BigTable, LevelDB is hosted on Google Code
$PRGNAM: under the New BSD License and has been ported to a variety of
$PRGNAM: Unix-based systems, Mac OS X, Windows, and Android. webOS's DB8
$PRGNAM: database service uses it as a backend.
$PRGNAM:
$PRGNAM: https://github.com/google/leveldb
EOT

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

umask ${UMASKBKP}