# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils linux-mod toolchain-funcs

##ZAPTEL_RELEASE=1.4.4
DAHDI_RELEASE=2.1.0.4

DESCRIPTION="Linux Voice TDM/WAN Router Package"
HOMEPAGE="http://www.sangoma.com/"
SRC_URI="
	ftp://ftp.sangoma.com/linux/current_wanpipe/${P//_beta/}.tgz
	tdm? ( http://downloads.asterisk.org/pub/telephony/dahdi-linux/releases/dahdi-linux-${DAHDI_RELEASE}.tar.gz )
"

LICENSE="WANPIPE"

SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="bitstrm bscstrm bisync sdlc edu pos sdlc mpapi adccp tdm bigmem"

RDEPEND="
	sys-libs/ncurses
	=net-misc/dahdi-${DAHDI_RELEASE}
"
DEPEND="
	sys-devel/flex
	>=virtual/linux-sources-2.6
	${RDEPEND}
"
S="${WORKDIR}/${P//_beta/}"
S_BUILD="${WORKDIR}/build-tmp"
DAHDI_BUILD="${WORKDIR}/dahdi-linux-${DAHDI_RELEASE}"

pkg_setup() {

	linux-mod_pkg_setup
}

src_unpack() {
	unpack ${A}

	# Make a minimal replica of the current system linux kernel headers.
	mkdir -p ${S_BUILD}
	cd ${S_BUILD}
	cp -a ${KV_DIR}/include ${S_BUILD}
	ln -s ${KV_DIR}/Makefile
	ln -s ${KV_DIR}/arch
	ln -s ${KV_DIR}/scripts
#	cp -ra ${S}/patches/kdrivers/include/* ${S_BUILD}/include/linux/
	cd ${S}
	epatch ${FILESDIR}/${PN}-3.4.1-setup.diff
	epatch ${FILESDIR}/${PN}-3.4.1-zaptel.diff
	epatch ${FILESDIR}/${PN}-3.4.1-wancfg.diff
}

src_compile() {
	cd ${S}

	PROTOCOLS=""
	use bitstrm && PROTOCOLS="$PROTOCOLS BITSTRM"
	use bscstrm && PROTOCOLS="$PROTOCOLS BSCSTRM"
	use bisync && PROTOCOLS="$PROTOCOLS BISYNC"
	use sdlc && PROTOCOLS="$PROTOCOLS SDLC"
	use edu && PROTOCOLS="$PROTOCOLS EDU"
	use pos && PROTOCOLS="$PROTOCOLS POS"
	use sdlc && PROTOCOLS="$PROTOCOLS SDLC"
	use mpapi && PROTOCOLS="$PROTOCOLS MPAPI"
	use adccp && PROTOCOLS="$PROTOCOLS ADCCP"
	use tdm && PROTOCOLS="$PROTOCOLS TDM"
	PROTOCOLS="$(sed -re 's/^ //' -e 's/ $//' -e 's/ /,/g' <<< $PROTOCOLS)"

	COMMON_ARGS="--silent --builddir=${S_BUILD} --with-linux=${S_BUILD} --usr-cc=$(tc-getCC) --protocol=${PROTOCOLS} --zaptel-path=${DAHDI_BUILD} --no-zaptel-compile"

	if use bigmem ; then
		COMMON_ARGS="$COMMON_ARGS --64bit_4GB"
	fi

	einfo "Building kernel modules ..."
	./Setup drivers ${COMMON_ARGS}

	einfo "Building utilities ..."
	./Setup utility ${COMMON_ARGS}

	einfo "Building config ..."
	./Setup meta ${COMMON_ARGS}
}

src_install() {
	cd ${S}

	# Move kernelmodules and includes to staging dir.
	mv ${S_BUILD}/lib ${D}
	mv ${S_BUILD}/usr ${D}

	# Stage the rest of the files.
	mkdir -p ${D}/dev
	./Setup inst --silent --builddir=${D}

	# Fix wanpipe doc dir name.
	mv ${D}/usr/share/doc/wanpipe ${D}/usr/share/doc/${P}

	newinitd ${FILESDIR}/wanpipe.rc6 wanpipe
}

pkg_preinst() {
	if [ "$(uname -m)" = "x86_64" ] ; then
		# bigmem has no effect on non-x86_64 systems, so we don't check otherwise
		if [ "$(grep MemTotal /proc/meminfo | sed -re 's/.*: +([0-9]+) .*/\1/')" -gt 4000000 ] ; then
			use bigmem || die "bigmem must be enabled on 64-bit systems with >=4GB of RAM"
		else
			use bigmem && die "bigmem must be disabled on systems which are 32bit or have less than 4GB of RAM"
		fi
	fi
}