-# poll.m4 serial 13
-dnl Copyright (c) 2003, 2005-2007, 2009-2011 Free Software Foundation, Inc.
+# poll.m4 serial 17
+dnl Copyright (c) 2003, 2005-2007, 2009-2013 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_FUNC_POLL],
[
AC_REQUIRE([gl_POLL_H])
- if test "$ac_cv_header_poll_h" = no; then
+ AC_REQUIRE([gl_SOCKETS])
+ if test $ac_cv_header_poll_h = no; then
ac_cv_func_poll=no
gl_cv_func_poll=no
else
AC_CHECK_FUNC([poll],
[# Check whether poll() works on special files (like /dev/null) and
- # and ttys (like /dev/tty). On MacOS X 10.4.0 and AIX 5.3, it doesn't.
+ # and ttys (like /dev/tty). On Mac OS X 10.4.0 and AIX 5.3, it doesn't.
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <fcntl.h>
#include <poll.h>
struct pollfd ufd;
/* Try /dev/null for reading. */
ufd.fd = open ("/dev/null", O_RDONLY);
- /* If /dev/null does not exist, it's not MacOS X nor AIX. */
+ /* If /dev/null does not exist, it's not Mac OS X nor AIX. */
if (ufd.fd >= 0)
{
ufd.events = POLLIN;
}
/* Try /dev/null for writing. */
ufd.fd = open ("/dev/null", O_WRONLY);
- /* If /dev/null does not exist, it's not MacOS X nor AIX. */
+ /* If /dev/null does not exist, it's not Mac OS X nor AIX. */
if (ufd.fd >= 0)
{
ufd.events = POLLOUT;
[gl_cv_func_poll=yes],
[gl_cv_func_poll=no],
[# When cross-compiling, assume that poll() works everywhere except on
- # MacOS X or AIX, regardless of its version.
+ # Mac OS X or AIX, regardless of its version.
AC_EGREP_CPP([MacOSX], [
#if (defined(__APPLE__) && defined(__MACH__)) || defined(_AIX)
This is MacOSX or AIX
fi
fi
if test $HAVE_POLL = 0 || test $REPLACE_POLL = 1; then
- AC_LIBOBJ([poll])
- gl_PREREQ_POLL
+ :
else
AC_DEFINE([HAVE_POLL], [1],
[Define to 1 if you have the 'poll' function and it works.])
fi
+
+ dnl Determine the needed libraries.
+ LIB_POLL="$LIBSOCKET"
+ if test $HAVE_POLL = 0 || test $REPLACE_POLL = 1; then
+ case "$host_os" in
+ mingw*)
+ dnl On the MSVC platform, the function MsgWaitForMultipleObjects
+ dnl (used in lib/poll.c) requires linking with -luser32. On mingw,
+ dnl it is implicit.
+ AC_LINK_IFELSE(
+ [AC_LANG_SOURCE([[
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+int
+main ()
+{
+ MsgWaitForMultipleObjects (0, NULL, 0, 0, 0);
+ return 0;
+}]])],
+ [],
+ [LIB_POLL="$LIB_POLL -luser32"])
+ ;;
+ esac
+ fi
+ AC_SUBST([LIB_POLL])
])
# Prerequisites of lib/poll.c.