diff --git a/weld/disc.mk b/weld/disc.mk
new file mode 100644
index 0000000..da00bfe
--- /dev/null
+++ b/weld/disc.mk
@@ -0,0 +1,21 @@
+# Copyright 2015 Andrew Gottemoller.
+#
+# This software is a copyrighted work licensed under the terms of the
+# Weld license.  Please consult the file "WELD_LICENSE" for
+# details.
+
+# This makefile discovers all the component definition files in a weld
+# project and expands a set of rules for each found component
+
+
+# If the user hasn't specified a predefined list of component definition
+# files go ahead and discover them
+ifeq ($(def_file_list),)
+
+    def_file_list := $(call find_files,$(source_path),$(def_file_name))
+
+endif
+
+
+# Expand a component definition rule for each found component
+$(foreach file,$(def_file_list),$(eval $(call def_file_rule,$(file))))