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#!/bin/bash

# Slackware build script for qm-vamp-plugins

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

PRGNAM=qm-vamp-plugins
VERSION=${VERSION:-1.7}
BUILD=${BUILD:-2}
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}

# No CFLAGS support (releases are tested with their own opts)

if [ "$ARCH" = "i486" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
else
  LIBDIRSUFFIX=""
fi

set -e

# Remove SSE/SSE2 flags as needed from the CFLAGS
fix_sse_flags() {
  local makefile="$1"

  if [ "$USE_SSE2" != "yes" ]; then
    sed -i \
      -e 's/-msse2//g' \
      $makefile
  fi

  if [ "$USE_SSE" != "yes" ]; then
    sed -i \
      -e 's/-msse//g' \
      -e 's/-mfpmath=sse//g' \
      $makefile
  fi
}

# Private static lib that's distributed as a separate tarball. Main
# program links to it, but it doesn't need to be installed system-wide
# as nothing else uses it. It's assumed that qm-dsp's version number
# will always match the main one.
LIBNAM=qm-dsp

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

cd $LIBNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# Why doesn't the include path include the project's own include/ dir?
# (without this, it can't find its own headers)
sed -i 's,-I\.,-I. -Iinclude,' build/general/Makefile.inc

# Dirty hack: various qm-dsp headers use size_t without including anything
# that defines it. Rather than laboriously find & patch them all, we'll
# use a gcc-specific hack:
sed -i '/^CFLAGS/s/$/ -include stddef.h/' build/linux/Makefile.linux64

# SSE/SSE2 support:
case "$SSE" in
  "yes") USE_SSE=yes ;;
  "no")  USE_SSE=no  ;;
  *)     if grep -q '\<sse\>' /proc/cpuinfo; then
           USE_SSE=yes
         else
           USE_SSE=no
         fi
         ;;
esac

if [ "$USE_SSE" = "yes" ]; then
  case "$SSE2" in
    "yes") USE_SSE2=yes ;;
    "no")  USE_SSE2=no  ;;
    *)     if grep -q '\<sse2\>' /proc/cpuinfo; then
             USE_SSE2=yes
           else
             USE_SSE2=no
           fi
           ;;
  esac
else
  USE_SSE2=no
fi

echo "USE_SSE=$USE_SSE and USE_SSE2=$USE_SSE2"

# Note about the Makefiles: Makefile.linux64 works fine on 32-bit. The difference
# between the .linux and .linux64 Makefiles is that the .linux64 one uses atlas
# instead of plain unoptimized lapack and blas. There's nothing magically 64-bit
# about atlas...
fix_sse_flags build/linux/Makefile.linux64
make -f build/linux/Makefile.linux64
cd -

# main makefile looks for ../qm-dsp (no version suffix), so:
ln -s $LIBNAM-$VERSION $LIBNAM

cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;


fix_sse_flags build/linux/Makefile.linux64
make -f build/linux/Makefile.linux64

# no 'make install' target, just cp it.
mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/vamp
cp $PRGNAM.so $PRGNAM.cat $PRGNAM.n3 $PKG/usr/lib$LIBDIRSUFFIX/vamp

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  README.txt COPYING \
  $PKG/usr/doc/$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:-tgz}