diff --git a/dev-db/libzdb/Manifest b/dev-db/libzdb/Manifest
index dccae33c1c342..c29d9ea8eb6a3 100644
--- a/dev-db/libzdb/Manifest
+++ b/dev-db/libzdb/Manifest
@@ -1 +1,2 @@
 DIST libzdb-3.2.3.tar.gz 771263 BLAKE2B a734dbee38ad175cd4d60afc7fe38c72318d5c74daf1556587997e592b2136d96fc747210aac4151764d8644a8b657a9364ffc1c7fcb133d8487f2585c12c22c SHA512 3cf0641a7aabf91fa9bc7ed93bce6fa3e692cad309086e3f899ede443ffdd84ed20dda38fbc48764733537cdc105ae7e555a23cf7bc9b8f99e233787e0271e29
+DIST libzdb-3.4.0.tar.gz 956184 BLAKE2B b75d35c4061d3b98e88f82515f1289c22fb364eefca8e28cab870fb2cea3206511e7e2d34daf8017b4c129602e5cfbd260f894970603e35cae7827e123f793f6 SHA512 b3363c9d4fb9c5a7e076d2ab465b43e9ed4a4332f5020b22b8229f049f8f8644a20a72a6f36f7e7cb37fa6e1fd7532b051be06c2f33245ff16de9cd91dc05b3a
diff --git a/dev-db/libzdb/libzdb-3.4.0.ebuild b/dev-db/libzdb/libzdb-3.4.0.ebuild
new file mode 100644
index 0000000000000..300fd5a6106af
--- /dev/null
+++ b/dev-db/libzdb/libzdb-3.4.0.ebuild
@@ -0,0 +1,86 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="A thread safe high level multi-database connection pool library"
+HOMEPAGE="https://www.tildeslash.com/libzdb/"
+SRC_URI="https://www.tildeslash.com/${PN}/dist/${P}.tar.gz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="debug doc mysql postgres +sqlite ssl static-libs"
+REQUIRED_USE=" || ( postgres mysql sqlite )"
+
+RESTRICT=test
+
+RDEPEND="mysql? ( dev-db/mysql-connector-c:0= )
+	postgres? ( dev-db/postgresql:* )
+	sqlite? ( >=dev-db/sqlite-3.7:3[unlock-notify(+)] )
+	ssl? ( dev-libs/openssl:0= )"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig
+	doc? ( app-text/doxygen )"
+
+src_prepare() {
+	default
+	sed -i -e "s|&& ./pool||g" test/Makefile.in || die
+}
+
+src_configure() {
+	## TODO: check what --enable-optimized actually does
+	## TODO: find someone with oracle db to add oci8 support
+	myconf=""
+	# enable default hidden visibility
+	myconf="${myconf} --enable-protected"
+
+	if use sqlite; then
+		myconf="${myconf} --with-sqlite=${EPREFIX}/usr/ --enable-sqliteunlock"
+	else
+		myconf="${myconf} --without-sqlite"
+	fi
+
+	if use mysql; then
+		myconf="${myconf} --with-mysql=${EPREFIX}/usr/bin/mysql_config"
+	else
+		myconf="${myconf} --without-mysql"
+	fi
+
+	if use postgres; then
+		myconf="${myconf} --with-postgresql=${EPREFIX}/usr/bin/pg_config"
+	else
+		myconf="${myconf} --without-postgresql"
+	fi
+
+	econf \
+		$(use_enable debug profiling) \
+		$(use_enable static-libs static) \
+		$(use_enable ssl openssl) \
+		--without-oci \
+		${myconf}
+}
+
+src_compile() {
+	default
+	if use doc; then
+		emake doc
+	fi
+}
+
+src_install() {
+	default
+
+	# the --disable-static flag only skips .a
+	use static-libs || rm -f "${D}"/usr/lib*/libzdb.la
+
+	dodoc AUTHORS CHANGES README
+	if use doc;then
+		docinto html
+		dodoc -r "${S}/doc/api-docs"/*
+	fi
+}
+
+src_test() {
+	emake verify
+}
diff --git a/dev-util/oprofile/files/config-implicit.patch b/dev-util/oprofile/files/config-implicit.patch
new file mode 100644
index 0000000000000..5ac20ef44e9fd
--- /dev/null
+++ b/dev-util/oprofile/files/config-implicit.patch
@@ -0,0 +1,11 @@
+diff '--color=auto' -ruN oprofile-1.4.0.orig/configure.ac oprofile-1.4.0/configure.ac
+--- oprofile-1.4.0.orig/configure.ac	2024-11-17 20:45:17.223265547 +0100
++++ oprofile-1.4.0/configure.ac	2024-11-17 20:52:05.146394249 +0100
+@@ -118,6 +118,7 @@
+ 				#include <asm/unistd.h>
+ 				#include <sys/types.h>
+ 				#include <string.h>
++				#include <unistd.h>
+ 			]],
+ 			[[struct perf_event_attr attr;
+ 				pid_t pid;
diff --git a/dev-util/oprofile/oprofile-1.4.0.ebuild b/dev-util/oprofile/oprofile-1.4.0.ebuild
index 60a651a71e685..e4667ded88419 100644
--- a/dev-util/oprofile/oprofile-1.4.0.ebuild
+++ b/dev-util/oprofile/oprofile-1.4.0.ebuild
@@ -48,6 +48,7 @@ pkg_setup() {
 src_prepare() {
 	eapply "${FILESDIR}/musl.patch"
 	eapply "${FILESDIR}/gcc12.patch"
+	eapply "${FILESDIR}/config-implicit.patch"
 	# bug 723092
 	sed -i 's/==/=/g' configure.ac || die
 
diff --git a/sys-fs/lvm2/files/lvm2-2.03.22-thin-autodetect.patch b/sys-fs/lvm2/files/lvm2-2.03.22-thin-autodetect.patch
index b02c9518f1d2a..968601af5b38b 100644
--- a/sys-fs/lvm2/files/lvm2-2.03.22-thin-autodetect.patch
+++ b/sys-fs/lvm2/files/lvm2-2.03.22-thin-autodetect.patch
@@ -1,3 +1,5 @@
+https://gitlab.com/lvmteam/lvm2/-/merge_requests/18
+
 From 25f0398b1c9d108160a39de43af6f2fa3f952db5 Mon Sep 17 00:00:00 2001
 From: Mike Gilbert <floppym@gentoo.org>
 Date: Sun, 17 Nov 2024 10:45:29 -0500