https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/patch/?id=1750758c7ff526e3560433f6235e5cfa35cf646a
https://bugs.gentoo.org/928228

From 1750758c7ff526e3560433f6235e5cfa35cf646a Mon Sep 17 00:00:00 2001
From: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Date: Wed, 6 Mar 2024 15:50:55 +0100
Subject: udev.c: Do not require libudev.h if DNO_LIBUDEV

libudev may not be presented at all, do not require it.

Reported-by: Boian Bonev <bbonev@ipacct.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
---
 udev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/udev.c b/udev.c
index bc4722b0..066e6ab1 100644
--- a/udev.c
+++ b/udev.c
@@ -26,7 +26,10 @@
 #include	<signal.h>
 #include	<limits.h>
 #include	<syslog.h>
+
+#ifndef NO_LIBUDEV
 #include	<libudev.h>
+#endif
 
 static char *unblock_path;