diff --git a/include/subdir.mk b/include/subdir.mk
index 68afcc48a2..d62df7efa7 100644
--- a/include/subdir.mk
+++ b/include/subdir.mk
@@ -17,6 +17,10 @@ define subtarget
 
 endef
 
+
+lastdir=$(word $(words $(subst /, ,$(1))),$(subst /, ,$(1)))
+diralias=$(if $(findstring $(1),$(call lastdir,$(1))),,$(call lastdir,$(1)))
+
 # Parameters: <subdir>
 define subdir
   $(call warn,$(1),d,D $(1))
@@ -29,6 +33,8 @@ define subdir
 
       # legacy targets
       $(call warn_eval,$(1)/$(bd),l,T,$(1)/$(bd)-$(target): $(1)/$(bd)/$(target))
+      # aliases
+      $(if $(call diralias,$(bd)),$(call warn_eval,$(1)/$(bd),l,T,$(1)/$(call diralias,$(bd))/$(target): $(1)/$(bd)/$(target)))
 	)
   )
   $(foreach target,$(SUBTARGETS),$(call subtarget,$(1),$(target)))