X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/8418c95a340421ab2588c49242cd3ccbdf6ed0ac..57f741c35c1bb7288b3cfd2d627032af60eb4a65:/rules.mk

diff --git a/rules.mk b/rules.mk
index 5c66dfde1..4a0fa32e3 100644
--- a/rules.mk
+++ b/rules.mk
@@ -138,6 +138,10 @@ $(call shvar,$(1))=$$(call $(1))
 export $(call shvar,$(1))
 endef
 
+define confvar
+$(foreach v,$(1),$(if $($(v)),y,n))
+endef
+
 # file extension
 ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))