diff --git a/dev-libs/libchdr/Manifest b/dev-libs/libchdr/Manifest
new file mode 100644
index 0000000000000..dac6df146977a
--- /dev/null
+++ b/dev-libs/libchdr/Manifest
@@ -0,0 +1 @@
+DIST libchdr-0_p20211127.tar.gz 414443 BLAKE2B a728a4ba0fa74883c7cfd43b5ee5147cc54a98370cc663237b5f12742a7859d36fc6c1572a8ec2af6e6bdf602eba4b0028d6fdf8f128320a2fbe60f0868d9f1b SHA512 534f949c8aaab9e307a9a2c1789ca2398dd59c3228a4b9bed62b413e8cc9e2ad11896580c55531dc13f9cd875f142499b52bf793b569a6df740e6d945fb3e17d
diff --git a/dev-libs/libchdr/libchdr-0_p20211127.ebuild b/dev-libs/libchdr/libchdr-0_p20211127.ebuild
new file mode 100644
index 0000000000000..fb1c7631271e9
--- /dev/null
+++ b/dev-libs/libchdr/libchdr-0_p20211127.ebuild
@@ -0,0 +1,28 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+CHDR_COMMIT="929a8d6523a7d21ea9e035f43211cd759e072053"
+
+DESCRIPTION="Standalone library for reading MAME's CHDv1-v5 formats"
+HOMEPAGE="https://github.com/rtissera/libchdr/"
+SRC_URI="https://github.com/rtissera/libchdr/archive/${CHDR_COMMIT}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/${PN}-${CHDR_COMMIT}"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+RDEPEND="sys-libs/zlib:="
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	local mycmakeargs=(
+		-DWITH_SYSTEM_ZLIB=yes
+	)
+
+	cmake_src_configure
+}
diff --git a/dev-libs/libchdr/metadata.xml b/dev-libs/libchdr/metadata.xml
new file mode 100644
index 0000000000000..52316d51b1316
--- /dev/null
+++ b/dev-libs/libchdr/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>ionen@gentoo.org</email>
+		<name>Ionen Wolkens</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">rtissera/libchdr</remote-id>
+	</upstream>
+</pkgmetadata>