diff --git a/Makefile b/Makefile
index 948c83a..97d2cd4 100644
--- a/Makefile
+++ b/Makefile
@@ -17,12 +17,28 @@
 # limitations under the License.
 #}
 
+default: build
+
+
+runtime?=iotjs
+srcs?=mastodon-lite.js
+V?=1
+
+
 %/run: example/index.js
 	${@D} $<
 
-run: iotjs/run
+%/check: ${srcs}
+	${@D} $<
+
+run: ${runtime}/run
+	@echo "# log: $@: $^"
+
+check: ${runtime}/check
+	@echo "# log: $@: $^"
+
+test: check run
 	@echo "# log: $@: $^"
-test: run
 
 clean:
 	rm -rf *~
@@ -33,6 +49,10 @@ cleanall: clean
 distclean: cleanall
 	rm -rf tmp
 
+setup:
+	@echo "log: Expected iotjs help to be printed"
+	${runtime} -h ||:
+
 rule/npm/version/%: package.json
 	-git describe --tags
 	cd example/webthing && npm version ${@F}