Merge "Make the module existence check nonfatal" into klp-modular-dev
diff --git a/core/main.mk b/core/main.mk
index e2b93c2..5d46c98 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -696,9 +696,13 @@
 
   # Ensure every module listed in PRODUCT_PACKAGES* gets something installed
   # TODO: Should we do this for all builds and not just the sdk?
+  dangling_modules :=
   $(foreach m, $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_PACKAGES), \
     $(if $(strip $(ALL_MODULES.$(m).INSTALLED)),,\
-      $(error $(ALL_MODULES.$(m).MAKEFILE): Module '$(m)' in PRODUCT_PACKAGES has nothing to install!)))
+      $(eval dangling_modules += $(m))))
+  ifneq ($(dangling_modules),)
+    $(warning: Modules '$(dangling_modules)' in PRODUCT_PACKAGES has nothing to install!)
+  endif
   $(foreach m, $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_PACKAGES_DEBUG), \
     $(if $(strip $(ALL_MODULES.$(m).INSTALLED)),,\
       $(warning $(ALL_MODULES.$(m).MAKEFILE): Module '$(m)' in PRODUCT_PACKAGES_DEBUG has nothing to install!)))