#!/bin/sh
#
######################################################
# Build script for RPI                               #
#                                                    #
# See .info for details                              #
######################################################

tce-load -i compiletc libasound-dev squashfs-tools

######################################################
# Configure extension creation parameters            #
######################################################

SRCNAM=alsa-lib-1.2.3.2.tar.bz2
WRKDIR=alsa-lib-1.2.3.2
EXTNAM=alsa
TMPDIR=/tmp/alsa

PATCHDIR=$(pwd)

######################################################
# Prepare extension creation                         #
######################################################

# Remove dirs and files left from previous creation

rm -r -f $WRKDIR

rm -r -f $TMPDIR

# Crete temporary directory

mkdir -p $TMPDIR

######################################################
# Compile extension                                  #
######################################################

# Export variables needed for compilation

case $(uname -m) in
   armv*)
      export CFLAGS="-Os -pipe -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp"
      export CXXFLAGS="-Os -pipe -fno-exceptions -fno-rtti -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp"
   ;;
   aarch64)
      export CFLAGS="-Os -pipe -march=armv8-a+crc -mtune=cortex-a72"
      export CXXFLAGS="-Os -pipe -fno-exceptions -fno-rtti -march=armv8-a+crc -mtune=cortex-a72"
   ;;
esac

export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig

# Unpack source in current directory

tar -xf $SRCNAM

# Configure it

cd $WRKDIR
./configure --prefix=/usr/local --enable-shared --disable-python --disable-thread-safety \
--disable-ucm --disable-topology

# Compile

make -j4

# Install in base temp dir

make install DESTDIR=$TMPDIR

# Delete compilation work directory

cd ..
rm -r -f $WRKDIR

# Adjust directory access rigths

find $TMPDIR/ -type d | xargs chmod -v 755;

# Strip executables

find $TMPDIR | xargs file | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded

# Delete unneded files

rm -r -f $TMPDIR/usr/local/lib
rm -r -f $TMPDIR/usr/local/include
rm -r -f $TMPDIR/usr/local/share/aclocal

# Change gid

cd $TMPDIR
#patch -p0 < $PATCHDIR/alsa-ipc-gid.patch
# alsa.conf is changed, just use sed to change group
sed -i 's/defaults.pcm.ipc_gid audio/defaults.pcm.ipc_gid staff/' $TMPDIR/usr/local/share/alsa/alsa.conf

# Change alsa.conf to show all name hints
sed -i 's/defaults.namehint.showall off/defaults.namehint.showall on/' $TMPDIR/usr/local/share/alsa/alsa.conf
sed -i 's/defaults.namehint.extended off/defaults.namehint.extended on/' $TMPDIR/usr/local/share/alsa/alsa.conf

###################################################
# Create base extension in temp dir               #
###################################################

cd $TMPDIR
cd ..
mksquashfs $TMPDIR $EXTNAM.tcz
cd $TMPDIR
find usr -not -type d > $EXTNAM.tcz.list
mv ../$EXTNAM.tcz .

# Create md5 file

md5sum $EXTNAM.tcz > $EXTNAM.tcz.md5.txt

# Cleanup temp directory

rm -r -f usr