# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils linux-mod

IUSE=""
DESCRIPTION="ALSA bluetooth headset driver [snd-bt-sco.ko]."
HOMEPAGE="http://bluetooth-alsa.sourceforge.net"
SRC_URI="mirror://gentoo/${P}.tar.bz2"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~x86"
DEPEND="virtual/alsa
	virtual/linux-sources"

general_info(){
	echo 
	ewarn "The kernel source needs to be configured and installed with BT_SCO and SND_HWDEP enabled."
	echo
	einfo "BT_SCO can be found under:"
	einfo "Device drivers -> Net. support -> Bluetooth subs. support -> SCO links support"
	echo
	einfo "If you have a usb bluetooth dongle you must also enable BT_HCIUSB_SCO:"
	einfo "Device drivers -> Net. support -> Bluetooth subs. support -> HCI USB driver -> SCO support"
	echo
	einfo "SND_HWDEP depends on special ALSA sound drivers"
	einfo "You can either choose the Tascam usb sound driver 'SND_USB_USX2Y'"
	einfo "or the soundblaster live driver 'SND_EMU10K1'."	
	echo 
	[ $DIE = true ] && die
	exit 1
}

choose_kernel(){
	echo
	echo "Proceed with enter to compile against running kernel."
	echo -n "You may also enter a different kernel version or type 'info' to get general information: "
	read KVERSION
	echo
	
	DIE="false"

	if [ -z $KVERSION ]; then
		if kernel_is 2 4; then 
			eerror "You need a 2.6.x series kernel" && DIE="true"
		 else
			MODDIR="/lib/modules/$(uname -r)"
		fi
	 else
		if  [ $KVERSION = info ]; then
			general_info
		elif  echo $KVERSION | grep ^2.6.* >/dev/null; then
			MODDIR="/lib/modules/${KVERSION}"
		elif echo $KVERSION | grep ^2.4.* >/dev/null; then
			eerror "You need a 2.6.x series kernel" && DIE="true"	 
		else	
			eerror "$KVERSION is not a valid kernel version." && DIE="true"
		fi
	fi
	
	[ $DIE = true ] && general_info
	DIE="false"

	KSYMDIR="${MODDIR}/source"
	NEEDED_OPTIONS="BT_SCO SND_HWDEP"
	
	if [ ! -e ${MODDIR}/source/.config ]; then
		eerror "Either ${MODDIR} does not exist"
		eerror "or the symlink ${KSYMDIR} does not point to the kernel source"
		eerror "or the kernel souce is not properly configured" 
		einfo "Check this and if needed recompile your kernel with $NEEDED_OPTIONS enabled"
		DIE="true"
	fi

	[ $DIE = true ] && general_info
	DIE="false"

	for OPTION in $NEEDED_OPTIONS
	 do
		if ! cat ${KSYMDIR}/.config | grep $OPTION | egrep -v ^# >/dev/null; then
			eerror "CONFIG_${OPTION} is not enabled." && DIE="true"
		fi
	done
	
	[ $DIE = true ] && general_info
}

pkg_setup() {
	choose_kernel
}

src_compile() {
	set_arch_to_kernel
	make -C ${KSYMDIR} M=$(pwd) modules
}

src_install() {
	insinto ${MODDIR}/extra
	doins snd-bt-sco.ko	
}

pkg_postinst() {
	echo
	einfo "Running modules-update"
	/usr/sbin/update-modules	
}