-RELEASE_IGNORE_FILES = $(if $(RELEASE_ATTR),\
- $(shell git ls-files | git check-attr --stdin $(RELEASE_ATTR)|awk -F: '!/$(RELEASE_ATTR): set$$/ {print $$1}'),\
- $(if $(filter RELEASE_ATTR,$(.VARIABLES)),,$(error Please specify RELEASE_ATTR variable (it can be empty))))
+RELEASE_IGNORE_FILES_CMD = $(strip $(if $(RELEASE_ATTR),\
+ git ls-files | git check-attr --stdin $(RELEASE_ATTR)|awk -F: '!/$(RELEASE_ATTR): set$$/ {print $$1}',\
+ $(if $(filter RELEASE_ATTR,$(.VARIABLES)),,$(error Please specify RELEASE_ATTR variable (it can be empty)))))