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-rw-r--r--csrc/smith.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/csrc/smith.h b/csrc/smith.h
index 04015ee..489c053 100644
--- a/csrc/smith.h
+++ b/csrc/smith.h
@@ -9,6 +9,8 @@
#ifndef SMITH_H_
#define SMITH_H_
+#include <unistd.h>
+
char * mr_smith();
#endif // SMITH_H_