libubox

lbubox是openwrt的一个核心库，封装了一系列基础实用功能，主要提供事件循环，二进制格式处理，linux链表实现和一些JSON辅助处理。

它的目的是以动态链接库方式来提供可重用的通用功能，给其他模块提供便利和避免再造轮子。

libubox主要提供三部分功能：

1）提供多种基础通用功能接口，包含链表，平衡二叉树，二进制处理，key-value链表，MD5等。

2）socket通信。

3）一套基于事件驱动的机制及任务队列管理功能。

编译安装到PC

1. 修改目录下CMakelists.txt，先去掉lua部分（不使用lua）。

#OPTION(BUILD_LUA "build Lua plugin" ON)
#ADD_SUBDIRECTORY(lua)

2. cmake编译安装

mkdir build; cd build ; cmake .. ; make; make install

[  %] Built target blobmsg_json-static
[ %] Built target ubox-static
[ %] Built target ubox
[ %] Built target blobmsg_json
[ %] Built target jshn
[ %] Built target json_script
[ %] Built target blobmsg-example
[ %] Built target runqueue-example
[ %] Built target ustream-example
[%] Built target json_script-example
Install the project...
-- Install configuration: ""
-- Up-to-date: /usr/local/include/libubox/kvlist.h
-- Up-to-date: /usr/local/include/libubox/json_script.h
-- Up-to-date: /usr/local/include/libubox/blobmsg_json.h
-- Up-to-date: /usr/local/include/libubox/ulog.h
-- Up-to-date: /usr/local/include/libubox/avl-cmp.h
-- Up-to-date: /usr/local/include/libubox/blob.h
-- Up-to-date: /usr/local/include/libubox/runqueue.h
-- Up-to-date: /usr/local/include/libubox/uloop.h
-- Up-to-date: /usr/local/include/libubox/list.h
-- Up-to-date: /usr/local/include/libubox/ustream.h
-- Up-to-date: /usr/local/include/libubox/vlist.h
-- Up-to-date: /usr/local/include/libubox/avl.h
-- Up-to-date: /usr/local/include/libubox/blobmsg.h
-- Up-to-date: /usr/local/include/libubox/safe_list.h
-- Up-to-date: /usr/local/include/libubox/usock.h
-- Up-to-date: /usr/local/include/libubox/md5.h
-- Up-to-date: /usr/local/include/libubox/utils.h
-- Installing: /usr/local/lib/libubox.so
-- Installing: /usr/local/lib/libubox.a
-- Installing: /usr/local/lib/libblobmsg_json.so
-- Set runtime path of "/usr/local/lib/libblobmsg_json.so" to ""
-- Installing: /usr/local/lib/libblobmsg_json.a
-- Installing: /usr/local/bin/jshn
-- Set runtime path of "/usr/local/bin/jshn" to ""
-- Installing: /usr/local/lib/libjson_script.so
-- Set runtime path of "/usr/local/lib/libjson_script.so" to ""
-- Up-to-date: /usr/local/share/libubox/jshn.sh

参考文档：

libubox组件（1）——usock

libubox组件（2）——blob/blobmsg

libubox组件（3）——uloop

BLOB二进制对象(blob.c/h)

libubox [4] - uloop runqueue ustream