media-sound/munt-mt32emu-alsadrv: New package

Upstream has labelled this obsolete but I still use it with
DOSBox. Maybe I'll add the DOSBox patch sometime.

Closes: https://bugs.gentoo.org/395307
Package-Manager: Portage-2.3.20, Repoman-2.3.6

media-sound/munt-mt32emu-alsadrv/Manifest

@@ -0,0 +1 @@
+DIST munt_2_3_0.tar.gz 418703 BLAKE2B d9c4290f11f4114b26aa45d6591c04a73d56981e7f618c1466db81fd35be3588b2853fb60b9cf65dd523ce8ea120a5a187bd805b58ba2f75719d460929c2e4e1 SHA512 87fe4891628ea33967270fe3c6c3840e40deb14bd7c8d61490d4c0057438af6bc0099c10e24e813ef1613ca9cc9fc1567a0340c7ea1f4254b209f7fc99c8c7a1

media-sound/munt-mt32emu-alsadrv/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>chewi@gentoo.org</email>
+		<name>James Le Cuirot</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="sourceforge">munt</remote-id>
+		<remote-id type="github">munt/munt</remote-id>
+	</upstream>
+	<longdescription lang="en">
+		mt32emu_alsadrv is a module of the Munt project. It uses the mt32emu library and provides an ALSA MIDI driver which emulates (approximately) the Roland MT-32, CM-32L and LAPC-I synthesiser modules.
+	</longdescription>
+</pkgmetadata>

media-sound/munt-mt32emu-alsadrv/munt-mt32emu-alsadrv-2.3.0.ebuild

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+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit toolchain-funcs prefix
+
+MY_P="munt_${PV//./_}"
+DESCRIPTION="ALSA MIDI driver for emulating the Roland MT-32, CM-32L, CM-64 and LAPC-I"
+HOMEPAGE="https://github.com/munt/munt"
+SRC_URI="https://github.com/munt/munt/archive/${MY_P}.tar.gz"
+LICENSE="LGPL-2.1"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="X"
+
+DEPEND="media-libs/alsa-lib
+	media-libs/munt-mt32emu
+	X? (
+		x11-libs/libX11
+		x11-libs/libXpm
+		x11-libs/libXt
+	)"
+
+RDEPEND="${DEPEND}"
+
+S="${WORKDIR}/munt-${MY_P}/mt32emu_alsadrv"
+DATA="/usr/share/mt32-rom-data"
+
+src_prepare() {
+	default
+
+	# Fix MT32 ROM path.
+	hprefixify src/alsadrv.cpp
+}
+
+src_compile() {
+	emake mt32d CXX="$(tc-getCXX)" CXXFLAGS="${CXXFLAGS} ${LDFLAGS}"
+	use X && emake xmt32 CXX="$(tc-getCXX)" CXXFLAGS="${CXXFLAGS} ${LDFLAGS}"
+}
+
+src_install() {
+	dobin mt32d
+	use X && dobin xmt32
+	dodoc {AUTHORS,README}.txt
+	keepdir "${DATA}"
+}
+
+pkg_postinst() {
+	einfo "MT32_CONTROL.ROM and MT32_PCM.ROM cannot be legally included so you must"
+	einfo "obtain them and place them in ${EPREFIX}${DATA}."
+}