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-rw-r--r--util/libreboot-utils/lottery.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/util/libreboot-utils/lottery.c b/util/libreboot-utils/lottery.c
index 1648cbc7..a494eff1 100644
--- a/util/libreboot-utils/lottery.c
+++ b/util/libreboot-utils/lottery.c
@@ -2,6 +2,11 @@
* Copyright (c) 2026 Leah Rowe <leah@libreboot.org> /| |\
Something something non-determinism / \ */
+#if !defined(_POSIX_C_SOURCE)
+/* for openat2 on linux */
+#define _POSIX_C_SOURCE 200809L
+#endif
+
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>