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# sockets.m4 serial 2
dnl Copyright (C) 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_SOCKETS],
[
gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H
LIBSOCKET=
if test $HAVE_WINSOCK2_H = 1; then
dnl Native Windows API (not Cygwin).
AC_CACHE_CHECK([if we need to call WSAStartup in winsock2.h and -lws2_32],
[gl_cv_func_wsastartup], [
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lws2_32"
AC_TRY_LINK([
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif], [
WORD wVersionRequested = MAKEWORD(1, 1);
WSADATA wsaData;
int err = WSAStartup(wVersionRequested, &wsaData);
WSACleanup ();],
gl_cv_func_wsastartup=yes, gl_cv_func_wsastartup=no)
LIBS="$gl_save_LIBS"
])
if test "$gl_cv_func_wsastartup" = "yes"; then
AC_DEFINE([WINDOWS_SOCKETS], 1, [Define if WSAStartup is needed.])
LIBSOCKET='-lws2_32'
fi
else
dnl Unix API.
dnl Solaris has most socket functions in libsocket.
AC_CACHE_CHECK([whether setsockopt requires -lsocket], [gl_cv_lib_socket], [
gl_cv_lib_socket=no
AC_TRY_LINK([extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();], [setsockopt();],
[],
[gl_save_LIBS="$LIBS"
LIBS="$LIBS -lsocket"
AC_TRY_LINK([extern
#ifdef __cplusplus
"C"
#endif
char setsockopt();], [setsockopt();],
[gl_cv_lib_socket=yes])
LIBS="$gl_save_LIBS"
])
])
if test $gl_cv_lib_socket = yes; then
LIBSOCKET='-lsocket'
fi
fi
AC_SUBST([LIBSOCKET])
gl_PREREQ_SOCKETS
])
# Prerequisites of lib/sockets.c.
AC_DEFUN([gl_PREREQ_SOCKETS], [
:
])
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