1 files changed, 1 insertions, 0 deletions
diff --git a/rules.mak b/rules.mak
index f65283c..4bc5e52 100644
--- a/rules.mak
+++ b/rules.mak
@@ -111,4 +111,5 @@ endef
 define unnest-vars
 $(call unnest-vars-1)
 $(foreach var,$(nested-vars),$(eval $(var) := $(filter-out %/, $($(var)))))
+$(shell mkdir -p $(sort $(foreach var,$(nested-vars),$(dir $($(var))))))
 endef