diff --git a/dev-libs/libev/libev-4.33.ebuild b/dev-libs/libev/libev-4.33.ebuild
index 127618dc6d375..b8ffdb37c3da6 100644
--- a/dev-libs/libev/libev-4.33.ebuild
+++ b/dev-libs/libev/libev-4.33.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
 
-inherit autotools multilib-minimal
+inherit autotools flag-o-matic multilib-minimal
 
 DESCRIPTION="A high-performance event loop/event model with lots of feature"
 HOMEPAGE="http://software.schmorp.de/pkg/libev.html"
@@ -27,6 +27,14 @@ src_prepare() {
 	eautoreconf
 }
 
+src_configure() {
+	# See bug #855869 and its large number of dupes in bundled libev copies.
+	filter-lto
+	append-flags -fno-strict-aliasing
+
+	multilib-minimal_src_configure
+}
+
 multilib_src_configure() {
 	ECONF_SOURCE="${S}" \
 	econf \