# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

inherit toolchain-funcs fortran

RESTRICT="nomirror"

DESCRIPTION="A program for the aerodynamic and flight-dynamic analysis of rigid aircraft of arbitrary configuration"
HOMEPAGE="http://web.mit.edu/drela/Public/web/avl/"
SRC_URI="http://web.mit.edu/drela/Public/web/${PN}/${PN}${PV}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~x86 ~amd64 ~ppc"

DEPEND="x11-libs/libX11"

RESTRICT="test"

S="${WORKDIR}/Avl"

FORTRAN="gfortran ifc g77"

src_unpack() {
	unpack ${A}
	cd "${S}"

	sed -e 's/-O3//g' -i plotlib/config.make.DP || die "sed plotlib/config.make failed"
	echo "CC = $(tc-getCC)" >> plotlib/config.make.DP
	echo "FC = ${FORTRANC}" >> plotlib/config.make.DP
	cp plotlib/config.make.DP plotlib/config.make

	sed -i \
		-e "s/^\(FC.*\)/FC = ${FORTRANC}/g" \
		-e "s/^\(CC.*\)/CC = $(tc-getCC)/g" \
		-e "s/^\(FFLAGS .*\)/FFLAGS = ${FFLAGS}/g" \
		-e "s/^\(FFLOPT .*\)/FFLOPT = \$(FFLAGS)/g" \
		-e "s/^\(FFLAGS2 .*\)/FFLAGS2 = \$(FFLAGS)/g" \
		bin/Makefile eispack/Makefile \
		|| die "sed for flags and compilers failed"

	if [ ${FORTRANC} = "gfortran" ]; then
		sed -i -e "s/^\(SECOND.*\)/SECOND = second_g77.f/g" bin/Makefile
	elif [ ${FORTRANC} = "ifc" ]; then
		sed -i -e "s/^\(SECOND.*\)/SECOND = second_ifc.f/g" bin/Makefile
	fi

}

src_compile() {
	cd "${S}"/plotlib
	emake DP="" || die "failed to build plotlib"
	cd "${S}"/eispack
	emake DP="" || die "failed to build eispack"
	cd "${S}"/bin
	for i in avl; do
		emake CFLAGS="${CFLAGS} -DUNDERSCORE" ${i} || die "failed to build ${i}"
	done
}

src_install() {
	dobin bin/avl || die "dobin failed"
	dodoc *.txt README || die "dodoc failed"
	insinto /usr/share/doc/${PF}/
}