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-rw-r--r--robot/main.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/robot/main.c b/robot/main.c
index d76dbaf..eba94cb 100644
--- a/robot/main.c
+++ b/robot/main.c
@@ -5,6 +5,7 @@
#include "sim.h"
#endif
+#include <unistd.h>
int main(int argc, char **argv) {
#ifdef W2_SIM
w2_sim_setup(argc, argv);