前言
其他openwrt的编译步骤网上几乎都一样，网络问题比较头疼。去买了一个vps，结果内存太小了，cpp不够编译。只有一核也编不过去。后面使用window10自带的ubuntu子系统，编译。下面是编译步骤，和遇到的所有问题。最好是把网络问题解决了，不然会遇到一堆奇奇怪怪的问题。
编译步骤
大致有以下步骤：
- 下载源码
git clone xxxxxxxx(看你是用的哪一个分支)
- 下载一些包（这里要是不科学冲浪会很慢）
./scripts/feeds update -a
./scripts/feeds install -a
- 选择以下要编译什么内容
make menuconfig（CPU啥的选一下，就能用，其他的看情况）
- 如果使用root编译加上这一条
export FORCE_UNSAFE_CONFIGURE=1
- 然后就等编译
make V=99
网络问题
有很多dl目录下的文件下载太慢，或者根本下载不了
1.使用其他源，（有很多问题）
2.挂代理（我用的方法）
使用代理
我这边用的是*
- 打开软件
这里显示的是http 127.0.0.1:10809 - 打开ubuntu
nano ~/.bashrc
添加以下代码
# 我这里是服务器不支持https就和http设置成一样的
export http_proxy=http://127.0.0.1:10809
export https_proxy=http://127.0.0.1:10809
- 执行source ~/.bashrc
- 验证生效与否
root@DESKTOP-HAA4OOQ:~# curl http://google.com
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
如果不为空就可以了
openwrt root用户问题
openwrt是不推荐root编译的
会出现以下错误
configure: error: you should not run configure as root(set FORCE_UNSAFE_CONFIGURE=1 in environment to bypass this check)
按照他说的，输入 export FORCE_UNSAFE_CONFIGURE=1继续编译就行了
WSL环境变量问题
由于windows添加了一堆莫名其妙的环境变量上去，find出现警告。
sed -i "s/Installed-Time: .*/Installed-Time: 1610712340/" /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/usr/lib/opkg/status
rm -rf /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/boot /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/tmp/* /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/usr/lib/opkg/info/*.postinst* /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/usr/lib/opkg/lists/* /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/var/lock/*.lock
find /root/share/newifi/source/build_dir/target-mipsel_24kc_musl/root-ramips/ -mindepth 1 -execdir touch -hcd "@1610712340" "{}" +
find: The relative path 'Files/WindowsApps/CanonicalGroupLimited.Ubuntu20.04onWindows_2004.2020.812.0_x64__79rhkp1fndgsc' is included in the PATH environment variable, which is insecure in combination with the -execdir action of find. Please remove that entry from $PATH
make[2]: *** [package/Makefile:72: package/install] Error 1
make[2]: Leaving directory '/root/share/newifi/source'
make[1]: *** [package/Makefile:109: /root/share/newifi/source/staging_dir/target-mipsel_24kc_musl/stamp/.package_install] Error 2
make[1]: Leaving directory '/root/share/newifi/source'
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/mnt/c/Program Files/Common Files/Oracle/Java/javapath:/mnt/d/DevelopSoftWare/VMWare/bin/:/mnt/c/Windows/system32:/mnt/c/Windows:/mnt/c/Windows/System32/Wbem:/mnt/c/Windows/System32/WindowsPowerShell/v1.0/:/mnt/c/Windows/System32/OpenSSH/:/mnt/c/Program Files/Docker/Docker/resources/bin:/mnt/c/ProgramData/DockerDesktop/version-bin:/mnt/d/DevelopSoftWare/UltraEdit:/mnt/c/Program Files/Java/jdk-15.0.1/bin:/mnt/c/Program Files/Java/jdk-15.0.1/jre/bin:/snap/bin
解决办法如下：
1.先echo $PATH
root@DESKTOP-HAA4OOQ:~# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/mnt/c/Program Files/Common Files/Oracle/Java/javapath:/mnt/d/DevelopSoftWare/VMWare/bin/:/mnt/c/Windows/system32:/mnt/c/Windows:/mnt/c/Windows/System32/Wbem:/mnt/c/Windows/System32/WindowsPowerShell/v1.0/:/mnt/c/Windows/System32/OpenSSH/:/mnt/c/Program Files/Docker/Docker/resources/bin:/mnt/c/ProgramData/DockerDesktop/version-bin:/mnt/d/DevelopSoftWare/UltraEdit:/mnt/c/Program Files/Java/jdk-15.0.1/bin:/mnt/c/Program Files/Java/jdk-15.0.1/jre/bin:/snap/bin
2.把其中一些/mnt/下的目录全删了，留下linux编译要用的
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
3.然后输入
export PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin'
4.验证以下echo $PATH 修改成功