#!/bin/sh

# Slackware build script for guitarix
# Written by Michales Michaloudes korgie@gmail.com

# Modified by B. Watson <yalhcru@gmail.com>:
# - Upgraded to guitarix2
# - Added man page
# - Added realtime capabilities
# - Make .desktop file validate
# - Add guitarix's README to /usr/doc

# 20130430 bkw:
# - Updated for 0.27.1
# - Replaced slack-desc with updated text from guitarix site
# - Added LV2 option

# 20150514 bkw:
# - Updated for 0.32.3
# - Fix some issues with the shared libs: they were being installed
#   to /usr/lib/ on 64-bit, and they were missing the +x bits.
# - Made LV2 option default to yes, since upstream is requiring lilv
#   even if --no-lv2 is used. Also, the lv2 plugins were being
#   installed to /usr/lib/ on 64-bit. Grr.
# - Upstream wants avahi by default. For now, hardcoded --no-avahi.

# 20151108 bkw:
# - Updated for 0.34.0
# - Added --disable-cxx11 to ./waf flags, as bluetooth.h uses the gcc
#   typeof() extension. Not sure if newer versions of bluez would have
#   this issue (but Slackware 14.1's bluez is pretty old by now).
# - Added patch from upstream git to allow building without webkitgtk.
#   The author added support for downloading presets, but didn't make
#   it optional in 0.34.0. Also added a couple of bugfix patches.
# - Support building 0.33.0 with VERSION=0.33.0 in the env.
# - Add SSE=no option.
# - Add WEBKIT=no option.
# - Remove LV2=no option from README (but not from script).

# Modified version released under the WTFPL, for details see
# http://www.wtfpl.net/txt/copying/

PRGNAM=guitarix
VERSION=${VERSION:-0.34.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

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

# Tarballs are now named "guitarix2-$VERSION", but the dir inside the
# tarball is still "guitarix-$VERSION".
TARNAME=${PRGNAM}2

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$TARNAME-$VERSION.tar.bz2
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 {} \;

# Confusing freedesktop.org standard is confusing.
# To pass desktop-file-validate, we need both Audio and AudioVideo, even
# though the wording of the error message is 'requires another category to
# be present among', implying we should only need Audio *or* AudioVideo.
sed -i '/^Categories/s,$,Audio;,;' $PRGNAM.desktop.in

# this is no longer documented in README, but still here for debugging.
if [ "${LV2:-yes}" = "no" ]; then
  LV2OPT=--no-lv2
fi

# 20151109 bkw: in case anyone needs guitarix-0.33.0:
# Starting with 0.34.0, the default is to pass -std=c++11 to gcc, which
# causes Slack 14.1's old bluetooth.h to fail (it uses gcc extensions).
# Before 0.34.0, this option's not needed... and will cause an error if
# it's present. Also, our patches are for 0.34.0 and won't apply to
# 0.33.0. So:
if ./waf --help | grep -q -- --disable-cxx11; then
  EXTRAOPT="--disable-cxx11"
  PATCH=${PATCH:-yes}
fi

# patches are optional (undocumented in README, on purpose)
if [ "${PATCH:-no}" = "yes" ]; then
  for patch in $CWD/patches/*.patch; do
    patch -p2 < "$patch"
  done
fi

# allow building non-SSE package on SSE host
[ "${SSE:-yes}" = "no" ] && EXTRAOPT="$EXTRAOPT --disable-sse"

# allow disabling webkitgtk. A bit of a dirty hack.
[ "${WEBKIT:-yes}" = "no" ] && \
  sed -i 's,webkit-1.0,webkit-DISABLED,' wscript

LIBDIR="/usr/lib${LIBDIRSUFFIX}"
./waf configure \
  --prefix=/usr \
  --cxxflags-release="$SLKCFLAGS" \
  --ladspadir="$LIBDIR/ladspa/" \
  --lv2dir="$LIBDIR/lv2/" \
  --libdir="$LIBDIR" \
  --no-avahi \
  $EXTRAOPT \
  $LV2OPT
./waf build # -v # verbose, shows actual commands
./waf install --destdir=$PKG

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

# Shared libraries are supposed to be +x.
chmod 755 $PKG/$LIBDIR/libgx*.so.?.?

# Man page written for this SlackBuild. It's for guitarix-0.32.3, but
# the command line options haven't changed since then.
mkdir -p $PKG/usr/man/man1
gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING changelog README* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
find $PKG/usr/doc -type f -exec chmod 0644 {} \;

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

# Only add capability stuff if not disabled:
if [ "${SETCAP:-yes}" = "yes" ]; then
  cat $CWD/setcap.sh >> $PKG/install/doinst.sh
  # Only allow execution by audio group
  chown root:audio $PKG/usr/bin/$PRGNAM
  chmod 0750 $PKG/usr/bin/$PRGNAM
fi

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