From 716140b80feebaeea5ef833de1f6acae68e8a8f1 Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Wed, 1 Apr 2026 10:54:25 +0100
Subject: libreboot-utils: don't use the GNU SOURCE macro

use the POSIX one

declare prototypes where necessary.

Signed-off-by: Leah Rowe <leah@libreboot.org>
---
 util/libreboot-utils/mkhtemp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'util/libreboot-utils/mkhtemp.c')

diff --git a/util/libreboot-utils/mkhtemp.c b/util/libreboot-utils/mkhtemp.c
index ced8aa96..c8ddb1b1 100644
--- a/util/libreboot-utils/mkhtemp.c
+++ b/util/libreboot-utils/mkhtemp.c
@@ -16,9 +16,9 @@
  * while the specification that it implements evolves.
  */
 
-#if defined(__linux__) && !defined(_GNU_SOURCE)
+#if !defined(_POSIX_C_SOURCE)
 /* for openat2 on linux */
-#define _GNU_SOURCE 1
+#define _POSIX_C_SOURCE 200809L
 #endif
 
 #include <sys/types.h>
-- 
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