--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit eutils multilib qmake-utils
+
+MY_P=qp${PV}
+
+DESCRIPTION="Extended Prolog supporting quantifiers, object-variables and substitutions"
+HOMEPAGE="http://www.itee.uq.edu.au/~pjr/HomePages/QuPrologHome.html"
+SRC_URI="http://www.itee.uq.edu.au/~pjr/HomePages/QPFiles/${MY_P}.tar.gz"
+
+LICENSE="Apache-2.0 GPL-2+"
+SLOT="0"
+KEYWORDS="~amd64 ~ppc ~x86"
+IUSE="debug doc examples pedro qt5 readline threads"
+
+RDEPEND="
+ !dev-util/mpatch
+ !dev-util/rej
+ !games-rpg/kqlives
+ qt5? (
+ dev-qt/qtwidgets:5
+ dev-qt/qtgui:5
+ )
+ pedro? ( net-misc/pedro )
+ readline? ( app-misc/rlwrap )"
+DEPEND="${RDEPEND}
+ dev-lang/perl"
+
+S="${WORKDIR}"/${MY_P}
+
+src_prepare() {
+ epatch "${FILESDIR}"/${PN}-10.x-qt5.patch
+
+ eapply_user
+}
+
+src_configure() {
+ econf \
+ --libdir=/usr/$(get_libdir) \
+ $(use_enable debug) \
+ $(use_enable threads multiple-threads)
+
+ if use qt5; then
+ cd "${S}"/src/xqp || die
+ eqmake5 xqp.pro
+ fi
+}
+
+src_compile() {
+ emake OPTIMISATION="${CXXFLAGS}"
+
+ if use qt5; then
+ cd "${S}"/src/xqp || die
+ emake
+ fi
+}
+
+src_install() {
+ sed \
+ -e "s|${S}|/usr/$(get_libdir)/qu-prolog|g" \
+ -i bin/qc bin/qc1.qup bin/qecat bin/qg bin/qp || die
+
+ dobin bin/{qc,qecat,qp,kq}
+
+ use qt5 && dobin src/xqp/xqp
+
+ into /usr/$(get_libdir)/${PN}
+ dobin bin/{qa,qc1.qup,qdeal,qem,qg,ql,qppp}
+
+ insinto /usr/$(get_libdir)/${PN}/bin
+ doins bin/rl_commands
+ doins bin/{qc1.qup,qecat,qg,qp}.qx
+
+ insinto /usr/$(get_libdir)/${PN}/library
+ doins prolog/library/*.qo
+
+ insinto /usr/$(get_libdir)/${PN}/compiler
+ doins prolog/compiler/*.qo
+
+ doman doc/man/man1/*.1
+
+ dodoc README
+
+ if use doc ; then
+ docinto reference-manual
+ dodoc doc/manual/*.html
+ docinto user-guide
+ dodoc doc/user/main.pdf
+ fi
+
+ if use examples ; then
+ docinto examples
+ newdoc examples/README README.examples
+ dodoc examples/*.ql
+ fi
+}