error: #20： fd_set is undefined

发布于 2021-12-23 14:34:34 浏览：1109 订阅该版

用keil 5编译前，已经通过env执行过了，“pkgs --update”和“scons --target=mdk5 -s”，然后用keil打开工程会出现各种问题：
```
packages\webclient-v2.1.2\src\webclient.c(1202): error:  #20: identifier "EWOULDBLOCK" is undefined
              if (
rrno == EWOULDBLOCK || errno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c(1202): error:  #20: identifier "EAGAIN" is undefined
              if (
rrno == EWOULDBLOCK || 
rrno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c(1263): error:  #20: identifier "EWOULDBLOCK" is undefined
                  if (
rrno == EWOULDBLOCK || errno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c(1263): error:  #20: identifier "EAGAIN" is undefined
                  if (
rrno == EWOULDBLOCK || 
rrno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c(1333): error:  #20: identifier "EWOULDBLOCK" is undefined
              if (
rrno == EWOULDBLOCK || errno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c(1333): error:  #20: identifier "EAGAIN" is undefined
              if (
rrno == EWOULDBLOCK || 
rrno == EAGAIN)
packages\webclient-v2.1.2\src\webclient.c: 0 warnings, 6 errors
compiling wn_module_auth.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_auth.c: 0 warnings, 4 errors
compiling af_inet_lwip.c...
compiling net_sockets.c...
compiling webclient_file.c...
compiling wn_module_dav.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_dav.c: 0 warnings, 4 errors
compiling wn_request.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\src\wn_request.c: 0 warnings, 4 errors
compiling webnet.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\src\webnet.c(38): error:  #35: #error directive: The lwIP tcpip thread stack size(RT_LWIP_TCPTHREAD_STACKSIZE) must more than 1408
  #error The lwIP tcpip thread stack size(RT_LWIP_TCPTHREAD_STACKSIZE) must more than 1408
packages\webnet-v2.0.2\src\webnet.c: 0 warnings, 5 errors
compiling wn_module_upload.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_upload.c: 0 warnings, 4 errors
compiling sal_socket.c...
compiling wn_module_asp.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_asp.c: 0 warnings, 4 errors
compiling wn_module_log.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_log.c: 0 warnings, 4 errors
compiling wn_mimetype.c...
compiling wn_module_ssi.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_ssi.c: 0 warnings, 4 errors
compiling wn_module_cgi.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_cgi.c: 0 warnings, 4 errors
compiling wn_module_alias.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_alias.c: 0 warnings, 4 errors
compiling wn_session.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\src\wn_session.c(480): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset)
packages\webnet-v2.0.2\src\wn_session.c(480): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset)
packages\webnet-v2.0.2\src\wn_session.c(490): warning:  #223-D: function "FD_SET" declared implicitly
          FD_SET(session->socket, readset);
packages\webnet-v2.0.2\src\wn_session.c(509): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset)
packages\webnet-v2.0.2\src\wn_session.c(509): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset)
packages\webnet-v2.0.2\src\wn_session.c(519): warning:  #223-D: function "FD_ISSET" declared implicitly
          if (FD_ISSET(session->socket, readset))
packages\webnet-v2.0.2\src\wn_session.c: 2 warnings, 8 errors
compiling wn_utils.c...
compiling wn_module.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\src\wn_module.c(516): warning:  #177-D: variable "fd" was declared but never referenced
      int result, fd;
packages\webnet-v2.0.2\src\wn_module.c: 1 warning, 4 errors
compiling wn_module_index.c...
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(102): error:  #20: identifier "fd_set" is undefined
  int webnet_sessions_set_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\inc\wn_session.h(103): error:  #20: identifier "fd_set" is undefined
  void webnet_sessions_handle_fds(fd_set *readset, fd_set *writeset);
packages\webnet-v2.0.2\module\wn_module_index.c: 0 warnings, 4 errors
```