+SUBDIRS += winsys/etnaviv/drm drivers/etnaviv drivers/renderonly
+SUBDIRS += frontends/dri
+SUBDIRS += winsys/iris/drm drivers/iris
+SUBDIRS += winsys/lima/drm drivers/lima
+SUBDIRS += winsys/panfrost/drm drivers/panfrost
+
+# sort to eliminate any duplicates
+INC_DIRS := $(call all-named-subdir-makefiles,$(sort $(SUBDIRS)))
+# targets/dri must be included last
+INC_DIRS += $(call all-named-subdir-makefiles,targets/dri)
+
+include $(INC_DIRS)