+define Require/getopt
+ getopt --help 2>&1 | grep long >/dev/null
+endef
+$(eval $(call Require,getopt, \
+ Please install GNU getopt \
+))
+
+define Require/fileutils
+ gcp --help || cp --help
+endef
+$(eval $(call Require,fileutils, \
+ Please install GNU fileutils \
+))
+