# Build openwrt and u-boot for mt7688 from source
Host: Ubuntu 18.04
Target: openwrt

## 安裝相關ubuntu套件

sudo apt-get install  libncurses5-dev  zlib1g-dev  gawk  flex  patch   git-core g++   subversion 

## 取得原始碼

git clone https://github.com/hi-wooya/openwrt-hiwooya.git
git clone https://github.com/hi-wooya/u-boot-hiwooya.git
cd u-boot-hiwooya
tar xvf buildroot-gcc342.tar.bz2
make  CROSS_COMPILE=../u-boot-hiwooya/buildroot-gcc342/bin/mipsel-linux-

之後變回得到uboot.bin。之後開始編譯openwrt

 cd openwrt-hiwooya
 ./scripts/feeds update -a
 ./scripts/feeds install -a

先新增三個patch
1. openwrt/tools/pkg-config/patches/001-glib-gdate-suppress-string-format-literal-warning.patch(資料八)
2. openwrt/tools/automake/patches/210-fix-bug-because-of-high-perl-version.patch(資料八)
3. openwrt/tools/mkimage/patches/200-compiler-support.patch(資料七)

之後會遇到"cfns.gperf:101:1: error: 'const char* libc_ ..."的問題，可以按照參考資料九的內容將兩個檔案(cfns.gperf和cfns.h)修該程式內容。

---
之後下命令

make V=99

成功編譯候會在**bin/rampips**下得到**openwrt-ramips-mt7688-HIWOOYA16128-squashfs-sysupgrade.bin**檔案。

## 參考資料
1. [hi-wooya github](https://github.com/hi-wooya)
2. [GNU-A Downloads](https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads)
3. [(七)ubuntu下编译openwrt内核的环境配置](https://www.cnblogs.com/zhangshenghui/p/6776128.html)
4. [hi-wooya/openwrt-hiwooya](https://github.com/hi-wooya/openwrt-hiwooya)
5. [解决perl高版本编译automake出错问题](https://blog.csdn.net/Javin_L/article/details/96011718)
6. [gdate.c:2497:7: error: format not a string literal, format string not checked ](https://blog.csdn.net/zmlovelx/article/details/81664043)
7. [解决编译openwrt mkimage时出现“linux/compiler-gcc7.h: No such file or directory”错误](https://blog.csdn.net/Javin_L/article/details/94745468)
8. [openwrt 编译坑](https://www.jianshu.com/p/3195df3f747d)
9. [openwrt报错：[PATCH] cfns: fix mismatch in gnu_inline attributes](https://blog.csdn.net/ScarletMeCarzy/article/details/104275607)
10. [[OpenWrt] patch 管理及 quil](http://lirobo.blogspot.com/2013/03/openwrt-patch-quilt.html)

###### tags: `openwrt` `mt7688` `linux`