# poll_h.m4 serial 1
-dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2011 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_REQUIRE([gl_POLL_H_DEFAULTS])
AC_CHECK_HEADERS_ONCE([poll.h])
- if test $ac_cv_header_poll_h != yes; then
+ if test $ac_cv_header_poll_h = yes; then
+ HAVE_POLL_H=1
+ else
+ HAVE_POLL_H=0
gl_REPLACE_POLL_H
fi
+ AC_SUBST([HAVE_POLL_H])
+
+ dnl <poll.h> is always overridden, because of GNULIB_POSIXCHECK.
+ gl_CHECK_NEXT_HEADERS([poll.h])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
dnl Unconditionally enables the replacement of <poll.h>.
AC_DEFUN([gl_REPLACE_POLL_H],
[
- AC_REQUIRE([gl_POLL_H_DEFAULTS])
- POLL_H='poll.h'
+ dnl This is a no-op, because <poll.h> is always overridden.
+ :
])
AC_DEFUN([gl_POLL_MODULE_INDICATOR],
[
GNULIB_POLL=0; AC_SUBST([GNULIB_POLL])
dnl Assume proper GNU behavior unless another module says otherwise.
- POLL_H=''; AC_SUBST([POLL_H])
HAVE_POLL=1; AC_SUBST([HAVE_POLL])
REPLACE_POLL=0; AC_SUBST([REPLACE_POLL])
])