diff --git a/dev-ml/extlib/Manifest b/dev-ml/extlib/Manifest
new file mode 100644
index 000000000..20ee2cf3f
--- /dev/null
+++ b/dev-ml/extlib/Manifest
@@ -0,0 +1 @@
+DIST extlib-1.7.6.tar.gz 88068 BLAKE2B 32376c09728ec7e7d762888ad706641b94bcc976f2e1f42f246ba79fe862b60df7ff924e1e22e89333d8f2e1d999deb71eee481c3c5919aa5d1e02731f64f323 SHA512 3065e2474fb0e480ed076aa1156584a4a6c839cd5d9e59f341e41113abb1736241354aa7ee7cb492967698bc392969522fd5bf30d1ad7f94754c4e10f376afa8
diff --git a/dev-ml/extlib/extlib-1.7.6-r1.ebuild b/dev-ml/extlib/extlib-1.7.6-r1.ebuild
new file mode 100644
index 000000000..315070f3d
--- /dev/null
+++ b/dev-ml/extlib/extlib-1.7.6-r1.ebuild
@@ -0,0 +1,54 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+inherit findlib eutils
+
+DESCRIPTION="Standard library extensions for O'Caml"
+HOMEPAGE="https://github.com/ygrek/ocaml-extlib"
+SRC_URI="https://github.com/ygrek/ocaml-extlib/archive/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="LGPL-2.1"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~x86 ~amd64-linux ~x86-linux ~ppc-macos"
+IUSE="doc +ocamlopt"
+
+RDEPEND="
+	>=dev-lang/ocaml-3.10.2:=[ocamlopt?]
+"
+DEPEND="${RDEPEND}
+	dev-ml/cppo"
+
+S="${WORKDIR}/ocaml-${P}"
+
+src_prepare() {
+	epatch "${FILESDIR}/ocaml409.patch"
+}
+
+src_compile() {
+	cd src || die
+	emake -j1 all
+	if use ocamlopt; then
+		emake opt cmxs
+	fi
+
+	if use doc; then
+		emake doc
+	fi
+}
+
+src_test() {
+	emake -j1 test
+}
+
+src_install () {
+	findlib_src_install
+
+	# install documentation
+	dodoc README.md
+
+	if use doc; then
+		dodoc -r src/doc/
+	fi
+}
diff --git a/dev-ml/extlib/files/ocaml409.patch b/dev-ml/extlib/files/ocaml409.patch
new file mode 100644
index 000000000..7f35ea4e5
--- /dev/null
+++ b/dev-ml/extlib/files/ocaml409.patch
@@ -0,0 +1,13 @@
+diff --git a/src/configure.ml b/src/configure.ml
+index f13d63e..f735a8c 100644
+--- a/src/configure.ml
++++ b/src/configure.ml
+@@ -7,7 +7,7 @@ let () =
+   match Sys.argv with
+   | [|_;"-cppo-args"|] ->
+     let version = Scanf.sscanf Sys.ocaml_version "%d.%d." (fun major minor -> major * 100 + minor) in
+-    printf "-D \\\"OCAML %d\\\"\n" version;
++    printf "-n -D \\\"OCAML %d\\\"\n" version;
+     print_endline (if Sys.word_size = 32 then "-D WORD_SIZE_32 " else "");
+     show_bytes "-D WITH_BYTES";
+     exit 0