--- /dev/null
+++ b/lib/fts.h
@@ -0,0 +1,6 @@
+#ifdef __APPLE__
+# define _FTS_H_ 1
+# include <fts_.h>
+#else
+# include_next <fts.h>
+#endif
--- a/modules/fts
+++ b/modules/fts
@@ -2,6 +2,7 @@ Description:
 Traverse a file hierarchy.
 
 Files:
+lib/fts.h
 lib/fts_.h
 lib/fts.c
 lib/fts-cycle.c