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-rw-r--r--driver_ubx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/driver_ubx.c b/driver_ubx.c
index 907ce896..9ee3f7cb 100644
--- a/driver_ubx.c
+++ b/driver_ubx.c
@@ -9,7 +9,9 @@
#include <string.h>
#include <math.h>
#include <ctype.h>
+#ifndef S_SPLINT_S
#include <unistd.h>
+#endif /* S_SPLINT_S */
#include <time.h>
#include <stdio.h>
#include <assert.h>