Signing package index... Cannot open file '/home/jello/openwrt/key-build' for reading

一.环境

发行版:Ubuntu 18.04.1 LTS

代号:bionic

内核版本:4.15.0-30-generic

二.背景

在编译Openwrt/LEDE时出现以下错误，进而自动终止了编译:

Signing package index... Cannot open file '/home/jello/openwrt/key-build' for reading

三.解决

有两种方法可以解决这一问题:

3.1 第一种为：手动生成对应的public key

./staging_dir/host/bin/usign -G -s ./key-build -p ./key-build.pub -c "Local build key"

3.2 第二种为: 修改配置

make menuconfig (禁用 global building settings | Cryptographically sign package lists这一选项)