#!/bin/sh

# Slackware build script for gzdoom

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

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

# 20181022 bkw: Updated for 3.6.0.
# 20180827 bkw: Updated for 3.5.1.
# 20180801 bkw: Updated for 3.5.0.
# 20180623 bkw: Updated for 3.4.1 (released the day after my 3.4.0 update).
# 20180612 bkw: Updated for 3.4.0.
# 20180104 bkw: Updated for 3.2.5.
# 20171222 bkw: Updated for 3.2.4.
# 20170608 bkw:
# - Updated for 3.1.0. fmodapi support has been removed by upstream, so
#   it's no longer a dep.
# - Add OpenAL as a dep. Technically it's not required, as gzdoom will
#   happily compile & run without it... but it won't be able to make
#   any sound at all. Nobody wants this. If you disagree with my decision
#   to make OpenAL a hard dep, I don't want to hear about it (you won't
#   be able to make sound anyway, so I won't have to...)
# - Stop supporting old versions of gzdoom. The old versions are now
#   supported as "gzdoom-legacy" for those that need them.

PRGNAM=gzdoom
VERSION=${VERSION:-3.6.0}
BUILD=${BUILD:-1}
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

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-g$VERSION $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-g$VERSION.tar.gz || \
  tar xvf $CWD/g$VERSION.tar.gz || \
  tar xvf $CWD/$PRGNAM-$VERSION.tar.gz || \
  tar xvf $CWD/$VERSION.tar.gz
cd $PRGNAM-g$VERSION || 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 {} \+

# gzdoom in windowed mode wants to display its git tag and hash as part
# of the window title. For releases this shows up as "<unknown version> 0",
# which doesn't hurt anything but is ugly.
# This makes the window title appear as e.g. "GZDOOM 2.1.1 (Aug 3 2016)". The
# date is the build date.
patch -p1 < $CWD/window_title_version.diff
sed -i "/#define *VERSIONSTR/s,GIT_DESCRIPTION,\"$VERSION\"," src/version.h

# This isn't currently used, but was in the past, and will be again I'm sure.
[ -e $CWD/compilefix.$VERSION.diff ] && \
  patch -p1 < $CWD/compilefix.$VERSION.diff

# 3.1.0 started needing -DNDEBUG. Using ld.gold speeds up the final link
# enough to be worth using (saves 17+ sec on my test box).
SLKCFLAGS="$SLKCFLAGS -DNDEBUG -fuse-ld=gold"

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS_RELEASE:STRING="$SLKCFLAGS -DSHARE_DIR=\\\"/usr/share/games/doom\\\"" \
    -DCMAKE_CXX_FLAGS_RELEASE:STRING="$SLKCFLAGS -DSHARE_DIR=\\\"/usr/share/games/doom\\\"" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DMAN_INSTALL_DIR=/usr/man \
    -DCMAKE_BUILD_TYPE=Release ..
  make VERBOSE=1
  mkdir -p $PKG/usr/games $PKG/usr/share/games/doom
  install -m0755 -s $PRGNAM $PKG/usr/games/$PRGNAM
  install -m0644 *.pk3 $PKG/usr/share/games/doom/
cd ..

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

# PNG converted from Windows icon
mkdir -p $PKG/usr/share/pixmaps
cat $CWD/$PRGNAM.png > $PKG/usr/share/pixmaps/$PRGNAM.png

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a docs/* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README_SBo.txt > $PKG/usr/doc/$PRGNAM-$VERSION/README_SBo.txt

# Fix DOS CRLF line endings. The stuff in licenses/ is already OK, for 2.3.2.
sed -i 's/\r//' $PKG/usr/doc/$PRGNAM-$VERSION/*.*

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}