Added tools install section.
diff --git a/Makefile b/Makefile
index 53d5589..158b033 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,7 @@
 
 install: all
 	@$(MAKE) -C testcases install
+	@$(MAKE) -C tools install
 	./IDcheck.sh
 
 libltp.a: