make[2]: *** [/lede-master/dl/open_wrt.zip] Error 255 ERROR: package/openflow-1.3 failed to build. #315
Description
when i try to compile source code to include openflow1.3 in openwrt, i meet such problem
description:
environment: VMware vitual machine Ubuntu 18.04
after i used command " make -j1 download V=s" in Ubuntu 18.04
it follows
mkdir -p /home/garfield/lede-master/dl
SHELL= flock /home/garfield/lede-master/tmp/.open_wrt.zip.flock -c ' /home/garfield/lede-master/scripts/download.pl "/home/garfield/lede-master/dl" "open_wrt.zip" "x" "" "https://github.com/CPqD/ofsoftswitch13/archive/" '
Cannot find appropriate hash command, ensure the provided hash is either a MD5 or SHA256 checksum.
Makefile:103: recipe for target '/home/garfield/lede-master/dl/open_wrt.zip' failed
make[2]: *** [/home/garfield/lede-master/dl/open_wrt.zip] Error 255
make[2]: Leaving directory '/home/garfield/lede-master/openflow-openwrt/openflow-1.3'
time: package/openflow-1.3/download#0.32#0.12#0.41
ERROR: package/openflow-1.3 failed to build.
package/Makefile:114: recipe for target 'package/openflow-1.3/download' failed
and i try to visit "https://github.com/CPqD/ofsoftswitch13/archive/ to solve the problem", but the web is not found. meanwhile, i could not find the file "open_wrt.zip"
what should i do?
thanks for your generous help