diff --git a/dev-libs/hts_engine/Manifest b/dev-libs/hts_engine/Manifest
new file mode 100644
index 0000000000..8121bdc9d4
--- /dev/null
+++ b/dev-libs/hts_engine/Manifest
@@ -0,0 +1 @@
+DIST hts_engine_API-1.10.tar.gz 169852 BLAKE2B 884d627a05f5c1b271b361fd9fb9b9ac051c1b9404fd09deafda34a6cadce95a63e84c6b8bbd385e6f1bfb357022db70f092376b60d8cb967506e2f1d532f0d0 SHA512 fa43bc0a013bfae1392cc5c1195901aae7de50f1866f06d6ec060af5a5740eb2715632561a117d04c98f2863da32fffff05bcaf76ba6ac70e5649ce94dad544b
diff --git a/dev-libs/hts_engine/hts_engine-1.10.ebuild b/dev-libs/hts_engine/hts_engine-1.10.ebuild
new file mode 100644
index 0000000000..52a415a67d
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+++ b/dev-libs/hts_engine/hts_engine-1.10.ebuild
@@ -0,0 +1,19 @@
+# Copyright 2019 Haelwenn (lanodan) Monnier <contact@hacktivis.me>
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="HMM-based speech synthesis system (HTS) engine and API"
+HOMEPAGE="http://hts-engine.sourceforge.net/"
+SRC_URI="http://downloads.sourceforge.net/hts-engine/hts_engine_API-${PV}.tar.gz"
+S="${WORKDIR}/hts_engine_API-${PV}"
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="speech-tools"
+
+DEPENDS="speech-tools? ( app-accessibility/speech-tools )"
+
+src_configure() {
+	econf $(use_enable speech-tools festival)
+}
diff --git a/dev-libs/hts_engine/metadata.xml b/dev-libs/hts_engine/metadata.xml
new file mode 100644
index 0000000000..67b43cc836
--- /dev/null
+++ b/dev-libs/hts_engine/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>contact@hacktivis.me</email>
+		<name>Haelwenn (lanodan) Monnier</name>
+	</maintainer>
+	<use>
+		<flag name="speech-tools">use memory allocation/free functions of <pkg>app-accessibility/speech-tools</pkg></flag>
+	</use>
+</pkgmetadata>