diff --git a/tools/apriori/prelinkmap.h b/tools/apriori/prelinkmap.h
new file mode 100644
index 0000000..17f7660
--- /dev/null
+++ b/tools/apriori/prelinkmap.h
@@ -0,0 +1,10 @@
+#ifndef PRELINKMAP_H
+#define PRELINKMAP_H
+
+#include <sys/types.h>
+
+extern void pm_init(const char *file);
+extern void pm_report_library_size_in_memory(const char *name, off_t fsize);
+extern unsigned pm_get_next_link_address(const char *name);
+
+#endif/*PRELINKMAP_H*/