-AC_REQUIRE([gl_HEADER_SYS_SOCKET])
-if test "$ac_cv_header_winsock2_h" = yes; then
- dnl Even if the 'socket' module is not used here, another part of the
- dnl application may use it and pass file descriptors that refer to
- dnl sockets to the ioctl() function. So enable the support for sockets.