From 6a90baf2bf5799cfcec9912bdd5c670603e5314a Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 3 Jan 2016 20:58:02 +0000
Subject: [PATCH] image.mk: use new pure make functions for sanitizing image
 filenames

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48106
---
 include/image.mk | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/include/image.mk b/include/image.mk
index cebe42e9d0..5ef800234b 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -18,17 +18,7 @@ KDIR=$(KERNEL_BUILD_DIR)
 KDIR_TMP=$(KDIR)/tmp
 DTS_DIR:=$(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/dts
 
-define toupper
-$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
-endef
-
-define tolower
-$(shell echo $(1) | tr '[:upper:]' '[:lower:]')
-endef
-
-define sanitize
-$(shell echo $(call tolower,$(1)) | sed 's/_/-/g')
-endef
+sanitize = $(call tolower,$(subst _,-,$(1)))
 
 DIST_SANITIZED:=$(call sanitize,$(VERSION_DIST))
 EXTRA_NAME_SANITIZED=$(call sanitize,$(EXTRA_IMAGE_NAME))