Nginx modules build fail:field ‘pkt6’ has incomplete type

前言

最近升级Nginx 1.24.0，编译第三方module出错：

/usr/src/nginx_modules/ngx_json_post_module/src/ngx_json_post_module.c
In file included from src/event/ngx_event.h:526,
                 from src/http/ngx_http_upstream.h:14,
                 from src/http/ngx_http.h:34,
                 from /usr/src/nginx_modules/ngx_json_post_module/src/ngx_json_post_module.c:11:
src/event/ngx_event_udp.h:38:27: error: field ‘pkt6’ has incomplete type
   38 |     struct in6_pktinfo    pkt6;
      |                           ^~~~

原因

从这个可以看出，

field ‘pkt6’ has incomplete type

是定义不匹配，查了一下资料：

https://trac.nginx.org/nginx/ticket/2312

同时，看了一下第三方module的源码，发现第三方module源码，不是以nginx规则开头的：

The following two #include statements must appear at the beginning of every nginx file:
 
#include 
#include 

Development guide

解决

所以修改文件include头顺序，

#include 
#include 
....

搞定