1 files changed, 1 insertions, 0 deletions
diff --git a/nt/inc/unistd.h b/nt/inc/unistd.h
index 5fdd9c8eb8..9c8a64d5ed 100644
--- a/nt/inc/unistd.h
+++ b/nt/inc/unistd.h
@@ -27,6 +27,7 @@ extern int faccessat (int, char const *, int, int);
 #define AT_SYMLINK_NOFOLLOW 4096
 
 #define O_NOCTTY 0
+#define O_IGNORE_CTTY 0
 
 /* This is normally on stdlib.h, but we don't override that header.  */
 extern int unsetenv (const char *);