From 2c40ad78166c4cdb667caf4238080a4708c43326 Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Wed, 1 Apr 2026 11:36:41 +0100
Subject: lbutils: only use GNU SOURCE for syscall

and remove manual prototypes; fchmod, realpath
and so on rely on the _XOPEN_SOURCE macro.

the POSIX macro wasn't needed: _XOPEN_SOURCE
is sufficient.

Signed-off-by: Leah Rowe <leah@libreboot.org>
---
 util/libreboot-utils/lib/mkhtemp.c | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

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

diff --git a/util/libreboot-utils/lib/mkhtemp.c b/util/libreboot-utils/lib/mkhtemp.c
index 46f6419f..11a5bdb9 100644
--- a/util/libreboot-utils/lib/mkhtemp.c
+++ b/util/libreboot-utils/lib/mkhtemp.c
@@ -4,24 +4,17 @@
  * Hardened mktemp (be nice to the demon).
  */
 
-#if !defined(_POSIX_C_SOURCE)
-#define _POSIX_C_SOURCE 200809L
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 700
 #endif
 
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
 /* for openat2 / fast path: */
 #ifdef __linux__
-#include <linux/openat2.h>
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
 #include <sys/syscall.h>
+#include <linux/openat2.h>
 #ifndef O_TMPFILE
 #define O_TMPFILE 020000000
 #endif
@@ -30,6 +23,16 @@
 #endif
 #endif
 
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
 #include "../include/common.h"
 
 /* note: tmpdir is an override of TMPDIR or /tmp or /var/tmp */
-- 
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