Add Merlin XU870 (#1303)

[openwrt.git] / include / prereq.mk

diff --git a/include/prereq.mk b/include/prereq.mk
index 660f67c..8e5490c 100644 (file)
--- a/include/prereq.mk
+++ b/include/prereq.mk
@@ -47,4 +47,12 @@ define RequireCommand
   $$(eval $$(call Require,$(1),$(2)))
 endef
 
+define RequireHeader
+  define Require/$(1)
+    [ -e "$(1)" ]
+  endef
+  
+  $$(eval $$(call Require,$(1),$(2)))
+endef
+
 .NOTPARALLEL: