diff --git a/Makefile b/Makefile
index 373d4c88..95dcf964 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,17 @@ build: pre_build
 	./Makefile.dryice.js demo
 	./Makefile.dryice.js bm
 
+# Minimal build: call Makefile.dryice.js only if our sources changed
+basic: build/src/ace.js
+
+build/src/ace.js : ${wildcard lib/*} \
+                   ${wildcard lib/*/*} \
+                   ${wildcard lib/*/*/*} \
+                   ${wildcard lib/*/*/*/*} \
+                   ${wildcard lib/*/*/*/*/*} \
+                   ${wildcard lib/*/*/*/*/*/*}
+	./Makefile.dryice.js
+
 doc:
 	cd doc;\
 	(test -d node_modules && npm update) || npm install;\