diff --git a/core/tasks/module-info.mk b/core/tasks/module-info.mk
new file mode 100644
index 0000000..e9b2ac7
--- /dev/null
+++ b/core/tasks/module-info.mk
@@ -0,0 +1,24 @@
+# Print a list of the modules that could be built
+
+MODULE_INFO_JSON := $(PRODUCT_OUT)/module-info.json
+
+$(MODULE_INFO_JSON):
+	@echo Generating $@
+	$(hide) echo -ne '{\n ' > $@
+	$(hide) echo -ne $(foreach m, $(sort $(ALL_MODULES)), \
+		' "$(m)": {' \
+			'"class": [$(foreach w,$(sort $(ALL_MODULES.$(m).CLASS)),"$(w)", )], ' \
+			'"path": [$(foreach w,$(sort $(ALL_MODULES.$(m).PATH)),"$(w)", )], ' \
+			'"tags": [$(foreach w,$(sort $(ALL_MODULES.$(m).TAGS)),"$(w)", )], ' \
+			'"installed": [$(foreach w,$(sort $(ALL_MODULES.$(m).INSTALLED)),"$(w)", )], ' \
+			'},\n' \
+	 ) | sed -e 's/, *\]/]/g' -e 's/, *\}/ }/g' -e '$$s/,$$//' >> $@
+	$(hide) echo '}' >> $@
+
+
+# If ONE_SHOT_MAKEFILE is set, our view of the world is smaller, so don't
+# rewrite the file in that came.
+ifndef ONE_SHOT_MAKEFILE
+files: $(MODULE_INFO_JSON)
+endif
+