openwrt 编译外部源码 过程与问题解决

1、openwrt 基本介绍

openwrt 是一个编译工具,帮助自定义编译内核和应用(我的理解)。所以如果有定制自己需要的内核,并基于这个定制化内核编译一些应用的话,可以使用openwrt,openwrt 还是很成熟,很方便的。

(PS:最开始不知道openwrt的时候,我是自己配置编译环境,然后自己编译应用,当然是很复杂的,又要应用和内核版本一致,又有各种规范,一个OVS编了好久才编好;而使用openwrt ,只需要勾选上自己想要的应用就可以了(openwrt 应用源中的应用很多,基本满足我的需求),所以推荐大家使用openwrt)

我使用的openwrt 版本是:19.07.1,想要移植到的平台是:Xilinx ZC702。

2、编译前准备

openwrt源码下载:

        网址是:https://github.com/openwrt/openwrt

                这个不用记,直接谷歌里面输:openwrt github 第一个就是。

        下载:git clone https://github.com.cnpmjs.org/openwrt/openwrt.git .

外部源码准备:

        你需要使用的源码,放在一个位置。

        .config 配置文件

其他应用或者库:

        这个是说有些库或者软件openwrt 确实没有,那么你可以准备下这些库或者软件的源码,借助 openwrt去帮你编译。

        (PS:当然,你不可能一上来就知道哪个库或者软件openwrt 没有,都是先进入到openwrt 里面,make menuconfig ,找一找,搜一搜,发现确实没有的话,你再去准备下这些东西。)

3、开始编译工作

选择版本:

        git tag 看看有哪些版本,我是因为openwrt 对ZC702 的支持从19.07.1 才开始,所以选择这个版本,大家可以根据需求选择版本。

        git checkout 版本号(直接复制git tag给出的某一个版本)

更新openwrt 库并下载:

        ./scripts/feeds update -a         #更新feeds软件源

        ./scripts/feeds install -a        #下载更新

功能选择:

        make menuconfig 

 .config - OpenWrt Configuration
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  lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq OpenWrt Configuration qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
  x  Arrow keys navigate the menu.  <Enter> selects submenus ---> (or empty submenus ----).  Highlighted letters x  
  x  are hotkeys.  Pressing <Y> includes, <N> excludes, <M> modularizes features.  Press <Esc><Esc> to exit, <?> x  
  x  for Help, </> for Search.  Legend: [*] built-in  [ ] excluded  <M> module  < > module capable               x  
  x                                                                                                              x  
  x lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x  
  x x                      Target System (Xilinx Zynq 7000 SoCs)  --->                                         x x  
  x x                      Target Profile (Xilinx ZC702)  --->                                                 x x  
  x x                      Target Images  --->                                                                 x x  
  x x                      Global build settings  --->                                                         x x  
  x x                  [*] Advanced configuration options (for developers)  --->                               x x  
  x x                  [ ] Build the OpenWrt Image Builder                                                     x x  
  x x                  [ ] Build the OpenWrt SDK                                                               x x  
  x x                  [ ] Package the OpenWrt-based Toolchain                                                 x x  
  x x                  [ ] Image configuration  --->                                                           x x  
  x x                      Base system  --->                                                                   x x  
  x x                      Administration  --->                                                                x x  
  x x                      Boot Loaders  ----                                                                  x x  
  x x                      Development  --->                                                                   x x  
  x x                      Extra packages  --->                                                                x x  
  x mqqqqqqqqqqqqqqqqqqv(+)qqqqqqqqqqqqqqqqqqqqqqqqqqqq
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