--- a/Makefile.in
+++ b/Makefile.in
@@ -142,17 +142,22 @@ ifneq (,$(filter FasterMake+RecursiveMak
 install-manifests: faster
 .PHONY: faster
 faster: install-dist/idl
 	$(MAKE) -C faster FASTER_RECURSIVE_MAKE=1
 endif
 
 .PHONY: tup
 tup:
-	$(call BUILDSTATUS,TIERS make tup)
+	$(call BUILDSTATUS,TIERS $(if $(MOZ_ARTIFACT_BUILDS),artifact )make tup)
+ifdef MOZ_ARTIFACT_BUILDS
+	$(call BUILDSTATUS,TIER_START artifact)
+	$(MAKE) recurse_artifact
+	$(call BUILDSTATUS,TIER_FINISH artifact)
+endif
 	$(call BUILDSTATUS,TIER_START make)
 	$(MAKE) buildid.h source-repo.h
 	$(call BUILDSTATUS,TIER_FINISH make)
 	$(call BUILDSTATUS,TIER_START tup)
 	@$(TUP) $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),,--verbose)
 	$(call BUILDSTATUS,TIER_FINISH tup)
 
 # process_install_manifest needs to be invoked with --no-remove when building