Add tools to the list of directories that need building
diff --git a/Makefile b/Makefile
index 73ca7fd..eb29001 100644
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,7 @@
 	@$(MAKE) -C doio $@
 	@$(MAKE) -C tests $@
 	@$(MAKE) -C pan $@
+	@$(MAKE) -C tools $@
 
 libltp.a:
 	@$(MAKE) -C lib $@
@@ -15,3 +16,4 @@
 	@$(MAKE) -C doio $@
 	@$(MAKE) -C tests $@
 	@$(MAKE) -C pan $@
+	@$(MAKE) -C tools $@