X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=blobdiff_plain;f=rules.mk;h=d36c99495310c2558f8c32b5ac5dbff65e53780a;hp=4a0fa32e3554b124a5d687825220224df8558dc0;hb=85ad2a43a099e03c0f78e171db05770bb92a5fa6;hpb=6e03b9ce43ade876be30c76bc95e452f3ad500a8

diff --git a/rules.mk b/rules.mk
index 4a0fa32e35..d36c994953 100644
--- a/rules.mk
+++ b/rules.mk
@@ -138,9 +138,10 @@ $(call shvar,$(1))=$$(call $(1))
 export $(call shvar,$(1))
 endef
 
-define confvar
-$(foreach v,$(1),$(if $($(v)),y,n))
-endef
+empty:=
+space:= $(empty) $(empty)
+merge=$(subst $(space),,$(1))
+confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
 
 # file extension
 ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))