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Diffstat (limited to 'util/libreboot-utils/lib/mkhtemp.c')
-rw-r--r--util/libreboot-utils/lib/mkhtemp.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/util/libreboot-utils/lib/mkhtemp.c b/util/libreboot-utils/lib/mkhtemp.c
index 4d7ad0bd..46f6419f 100644
--- a/util/libreboot-utils/lib/mkhtemp.c
+++ b/util/libreboot-utils/lib/mkhtemp.c
@@ -4,9 +4,8 @@
* Hardened mktemp (be nice to the demon).
*/
-#if defined(__linux__) && !defined(_GNU_SOURCE)
-/* for openat2 syscall on linux */
-#define _GNU_SOURCE 1
+#if !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE 200809L
#endif
#include <sys/types.h>