fix: make runs make ast

Makefile

@@ -14,7 +14,11 @@ else
   PIP_INSTALL = $(PIP) install
 endif
 
-.PHONY: install install-cpu install-rocm install-cuda extract ast sync verify clean help
+.PHONY: default install install-cpu install-rocm install-cuda extract ast sync verify clean help
+
+default: help
+
+ast:
 
 help:
 	@echo "Targets:"