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-rw-r--r--util/cbfstool/flashmap/fmap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/util/cbfstool/flashmap/fmap.c b/util/cbfstool/flashmap/fmap.c
index 5438d49f8f..f143beb90f 100644
--- a/util/cbfstool/flashmap/fmap.c
+++ b/util/cbfstool/flashmap/fmap.c
@@ -32,6 +32,8 @@
* Software Foundation.
*/
+#define _XOPEN_SOURCE 700
+
#include <stdlib.h>
#include <stdio.h>
#include <string.h>