2 dnl Copyright (C) 2008, 2010-2018 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
9 dnl Where are gethostent(), sethostent(), endhostent(), gethostbyname(),
10 dnl gethostbyaddr() defined?
11 dnl - On Solaris < 11.4, they are in libnsl. Ignore libxnet.
12 dnl - On Haiku, they are in libnetwork.
13 dnl - On BeOS, they are in libnet.
14 dnl - On native Windows, they are in ws2_32.dll.
15 dnl - Otherwise they are in libc.
16 AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
19 AC_SEARCH_LIBS([gethostbyname], [nsl network net],
20 [if test "$ac_cv_search_gethostbyname" != "none required"; then
21 HOSTENT_LIB="$ac_cv_search_gethostbyname"
24 if test -z "$HOSTENT_LIB"; then
25 AC_CHECK_FUNCS([gethostbyname], , [
26 AC_CACHE_CHECK([for gethostbyname in winsock2.h and -lws2_32],
27 [gl_cv_w32_gethostbyname],
28 [gl_cv_w32_gethostbyname=no
34 #ifdef HAVE_WINSOCK2_H
39 [[gethostbyname(NULL);]])],
40 [gl_cv_w32_gethostbyname=yes])
43 if test "$gl_cv_w32_gethostbyname" = "yes"; then
44 HOSTENT_LIB="-lws2_32"
48 AC_SUBST([HOSTENT_LIB])