#!/bin/bash

# Slackware build script for qzdoom

# Written by B. Watson (yalhcru@gmail.com)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# Heavily based on gzdoom.SlackBuild, since gzdoom and qzdoom are synced
# up regularly.

# 20201027 bkw: BUILD=2
# - Updated download URL.
# - Install .pk3 files somewhere else, so they don't conflict with gzdoom.
# - Use upstream icon (also scaled versions in /usr/share/icons).
# - Make fluidsynth MIDI work again.
# - Fix <unknown version> in the window title.
# - Remove extraneous article from README & slack-desc ("a most" => "most").

# Note about "new" releases:

# qzdoom now belongs to a different github user, so the URL is
# updated... but there's still no new release of it. If you check the
# repo, you'll see the same releases as gzdoom (e.g. g4.4.2). These
# are *not* qzdoom, they're gzdoom (try downloading the tarballs from
# the qzdoom and gzdoom repos with the same version number and diffing
# them). So only releases (tags) that begin with "q" are really
# qzdoom, and 2.1.0 is still the latest.

# TL;DR: Please don't email me saying there's a new release unless the
# version number starts with "q".

PRGNAM=qzdoom
VERSION=${VERSION:-2.1.0}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}

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

CWD=$(pwd)
TMP=${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

SRCVER=q$VERSION

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$SRCVER
tar xvf $CWD/$PRGNAM-$SRCVER.tar.gz
cd $PRGNAM-$SRCVER
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# 20201027 bkw: dirty hack to get fluidsynth 2.x to work. qzdoom's
# fluidsynth support stopped working when fluidsynth got updated
# to 2.x.
sed -i '/libfluidsynth\.so/s,\.1,.2,' \
       src/sound/mididevices/music_fluidsynth_mididevice.cpp

# 20201027 bkw: fix the '<unknown version>' in the window title.
( echo "#define GIT_DESCRIPTION \"$VERSION\""
  echo "#define GIT_HASH \"release\""
  echo "#define GIT_TIME __DATE__" ) > src/gitinfo.h

# 20201027 bkw: change SHARE_DIR to qzdoom, to avoid stepping on or
# accidentally loading the *.pk3 stuff from gzdoom. This won't stop
# qzdoom from finding the IWADs in /usr/share/games/doom since this
# path is also searched.

SLKCFLAGS="$SLKCFLAGS -DNDEBUG -fuse-ld=gold"
SD=/usr/share/games/$PRGNAM
mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS_RELEASE="$SLKCFLAGS -DSHARE_DIR=\\\"$SD\\\"" \
    -DCMAKE_CXX_FLAGS_RELEASE="$SLKCFLAGS -DSHARE_DIR=\\\"$SD\\\"" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DINSTALL_PATH=games \
    -DINSTALL_DOCS_PATH=doc/$PRGNAM-$VERSION \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DINSTALL_PK3_PATH=$SD \
    -DCMAKE_BUILD_TYPE=Release ..
  make VERBOSE=1
  make install/strip DESTDIR=$PKG VERBOSE=1
cd ..

# .desktop written by SlackBuild author.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

# New-school desktop-ey icons.
for i in 16 22 32 48 64 128 256; do
  SIZE=${i}x${i}
  DIR=$PKG/usr/share/icons/hicolor/$SIZE/apps
  mkdir -p $DIR
  convert src/posix/zdoom.xpm -resize $SIZE $DIR/$PRGNAM.png
done

# Old-school windowmanagerish icon.
mkdir -p $PKG/usr/share/pixmaps
ln -s ../icons/hicolor/64x64/apps/$PRGNAM.png $PKG/usr/share/pixmaps/$PRGNAM.png

# docs already installed.
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

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