# Copyright 2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

DESCRIPTION="The GHDL VHDL simulator."
HOMEPAGE="http://ghdl.free.fr/"
SRC_URI="
	https://github.com/ghdl/ghdl/archive/v${PV}.tar.gz
		-> ${P}.tar.gz"

LICENSE=""
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="gnat_2016 gnat_2017 +gnat_2018"

DEPEND="
	gnat_2016? ( dev-lang/gnat-gpl:4.9.4 )
	gnat_2017? ( dev-lang/gnat-gpl:6.3.0 )
	gnat_2018? ( dev-lang/gnat-gpl:7.3.1 )
	sys-devel/llvm
"
RDEPEND="${DEPEND}"
BDEPEND=""

REQUIRED_USE="^^ ( gnat_2016 gnat_2017 gnat_2018 )"

PATCHES=(
	"${FILESDIR}"/ghdl_configuration.patch
)

src_configure() {
	if use gnat_2016; then
		GCC_PV=4.9.4
	elif use gnat_2017; then
		GCC_PV=6.3.0
	elif use gnat_2018; then
		GCC_PV=7.3.1
	else
		eerror "Not sure what USE flags got here, but you must specify gnat_x"
		die
	fi

	GNATMAKE="gnatmake-${GCC_PV}" econf --with-llvm-config
}