#!/bin/sh

# Slackware build script for the OpenVG/OpenGL ES2.0 libraries
# provided by Broadcom for Raspberry Pi
# Written by Konstantinos Mantzaris (kmanjaris@gmail.com)

# Copyright 2012-2016 Konstantinos Mantzaris <kmanjaris@gmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.



PKGNAM=libbcmrpi
PKGVER=1.1.0
VERSION=1.1.0
BUILD=${BUILD:-1}
TAG=${TAG:-xsb}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "arm" ]; then
  SLKCFLAGS="-O2 -pipe -march=armv7-a -mfpu=neon-vfpv4 -mfloat-abi=softfp -Wno-psabi -lGLESv2"
  SLKINCFLAGS="/opt/vc/include:/opt/vc/include/interface/vcos:/usr/include/interface/vcos/pthreads"
  LIBDIRSUFFIX=""
fi

# Perform a small system architecture check
if [ ! "$ARCH" = "arm" ] ; then
   echo "ERROR : This package is meant to be used ONLY on the"
   echo "ERROR : Broadcom based ARM system named Raspberry Pi"
   exit 1
fi

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

rm -rf ${CWD}/firmware
cd $CWD
tar xvf firmware*.tar.?z* || exit 1
cd ${CWD}/firmware || exit 1

cd $TMP
rm -rf $PKG
mkdir -p $TMP $PKG
cd $PKG
mkdir -p $PKG/usr
cp -a $CWD/firmware/opt/vc/bin \
      $CWD/firmware/opt/vc/include \
      $CWD/firmware/opt/vc/lib \
      $CWD/firmware/opt/vc/sbin \
      $PKG/usr
cp -a $PKG/usr/include/interface/vcos/pthreads/* $PKG/usr/include/interface/vcos

# Make sure ownerships and permissions are sane:
chown -R root:root .
chmod 755 $PKG/usr/lib/*.so

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
  ( cd $PKG/usr/info
    rm -f dir
    gzip -9 *
  )
fi

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  AUTHORS COPYING* INSTALL NEWS README TODO \
  $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a $CWD/firmware/opt/vc/LICE* $PKG/usr/doc/${PKGNAM}-$VERSION/

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

mkdir -p $PKG/install
if [ "$ARCH" = "arm" ]; then LIBDIRSUFFIX="RPi"; fi
sed "s/SlaXBMC-14./SlaXBMC${LIBDIRSUFFIX}-14./g" $CWD/slack-desc > $PKG/install/slack-desc
sed -i "s/VERSION/${VERSION}/g" $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh
rm $CWD/firmware
rm -r $CWD/raspberrypi-firmware*

# Build the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD$TAG.txz