diff --git a/src/libds.c b/src/libds.c
new file mode 100644
index 0000000..e6ea5c1
--- /dev/null
+++ b/src/libds.c
@@ -0,0 +1,5 @@
+#include "libds.h"
+
+int compare_always(void* a, void* b){
+  return 1;
+}