Add environment variable

Author: kgryte

Makefile

@@ -204,6 +204,22 @@ else
 	NODE_ENV_WORKSHOPS ?= workshop
 endif
 
+# Define command-line flags when invoking the Node executable:
+ifdef NODE_FLAGS
+	NODE_FLAGS_BENCHMARK := $(NODE_FLAGS)
+	NODE_FLAGS_EXAMPLES := $(NODE_FLAGS)
+	NODE_FLAGS_REPL := $(NODE_FLAGS)
+	NODE_FLAGS_TEST := $(NODE_FLAGS)
+	NODE_FLAGS_WORKSHOPS := $(NODE_FLAGS)
+else
+	NODE_FLAGS ?=
+	NODE_FLAGS_BENCHMARK ?=
+	NODE_FLAGS_EXAMPLES ?=
+	NODE_FLAGS_REPL ?=
+	NODE_FLAGS_TEST ?=
+	NODE_FLAGS_WORKSHOPS ?=
+endif
+
 
 # DEPENDENCIES #