From e54c20de8cab86db96144153f8801734f51ee79e Mon Sep 17 00:00:00 2001
From: Jan Lindemann <jan@janware.com>
Date: Fri, 29 Mar 2019 16:45:20 +0000
Subject: [PATCH] defs.mk: Add function uniq

Signed-off-by: Jan Lindemann <jan@janware.com>
---
 make/defs.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/make/defs.mk b/make/defs.mk
index 19003374..62ed9329 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -135,6 +135,11 @@ define install_links
 		done;
 endef
 
+define uniq =
+  $(eval seen :=)
+  $(foreach _,$1,$(if $(filter $_,${seen}),,$(eval seen += $_)))
+  ${seen}
+endef
 
 # ----- standard variables