RT-Thread-Webnet2.0.3软件包编译报错RT-Thread问答社区

Webnet2.0.3软件包编译报错

发布于 2022-08-26 15:23:59 浏览：509 订阅该版

1.wn_module_asp.c第90行
报错dereferencing type-punned pointer will break strict-aliasing rules，in_addr*这个强制转换好像不被允许，应该如何更改？

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20220826/6d82c43dd8872dbc1587c14bc9ffe706.png)
```c
#if defined(RT_USING_LWIP) && !defined(RT_USING_SAL)
        webnet_session_printf(session, "%s", inet_ntoa(*(struct in_addr*)&(netif_default->ip_addr)));
#endif
```
2.webnet.c和wn_session.c编译
报错 socket bind listen等函数不存在，添加sys/select.h sys/socket.h后可以正常编译。源文件wn_session.c没有添加这两个头文件，webnet.c在没有定义SAL_USING_POSIX的时候添加的sys/select.h。我没有定义SAL_USING_POSIX，按理说不应该包含sys里的头文件
```c
packages\webnet\src\webnet.c: In function 'webnet_thread':
packages\webnet\src\webnet.c:89:16: error: implicit declaration of function 'socket' [-Werror=implicit-function-declaration]
     listenfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
                ^
packages\webnet\src\webnet.c:108:9: error: implicit declaration of function 'bind' [-Werror=implicit-function-declaration]
     if (bind(listenfd, (struct sockaddr *) &webnet_saddr, sizeof(webnet_saddr)) == -1)
         ^
packages\webnet\src\webnet.c:115:9: error: implicit declaration of function 'listen' [-Werror=implicit-function-declaration]
     if (listen(listenfd, WEBNET_CONN_MAX) == -1)
         ^
packages\webnet\src\webnet.c:163:24: error: implicit declaration of function 'accept' [-Werror=implicit-function-declaration]
                 sock = accept(listenfd, &cliaddr, &clilen);
                        ^
packages\webnet\src\webnet.c:166:21: error: implicit declaration of function 'closesocket' [-Werror=implicit-function-declaration]
                     closesocket(sock);
                     ^
packages\webnet\src\wn_session.c: In function 'webnet_session_create':
packages\webnet\src\wn_session.c:60:27: error: implicit declaration of function 'accept' [-Werror=implicit-function-declaration]
         session->socket = accept(listenfd, (struct sockaddr *) &(session->cliaddr), &clilen);
                           ^
packages\webnet\src\wn_session.c: In function 'webnet_session_read':
packages\webnet\src\wn_session.c:96:18: error: implicit declaration of function 'recvfrom' [-Werror=implicit-function-declaration]
     read_count = recvfrom(session->socket, buffer, length, 0, NULL, NULL);
                  ^
packages\webnet\src\wn_session.c: In function 'webnet_session_close':
packages\webnet\src\wn_session.c:125:5: error: implicit declaration of function 'closesocket' [-Werror=implicit-function-declaration]
     closesocket(session->socket);
     ^
packages\webnet\src\wn_session.c: In function 'webnet_session_printf':
packages\webnet\src\wn_session.c:169:5: error: implicit declaration of function 'send' [-Werror=implicit-function-declaration]
     send(session->socket, session->buffer, length, 0);
```
3.wn_module_upload.c编译
报错memrchr未定义，文件中通过宏判断，不知道为什么没有编译文件中的memrchr函数，去掉条件宏后可以编译

屏蔽报错，编译后wennet正常工作，