From 31bd21a466716c43f6cb3b4e3c8ed5ffd445a543 Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Mon, 9 Mar 2026 16:29:05 +0000
Subject: util/nvmutil: use even older define for pread

with this new define, we can target even older systems
from the late 90s.

Signed-off-by: Leah Rowe <leah@libreboot.org>
---
 util/nvmutil/nvmutil.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'util/nvmutil')

diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index c763727d..82f67788 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -15,7 +15,9 @@
  * -Os -Wall -Wextra -Werror -pedantic -std=c99
  */
 
-#define _POSIX_C_SOURCE 200809L
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 500
+#endif
 
 #ifdef __OpenBSD__
 #include <sys/param.h>
-- 
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