| # poll_h.m4 serial 3 |
| dnl Copyright (C) 2010-2020 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. |
| |
| dnl Written by Bruno Haible. |
| |
| AC_DEFUN([gl_POLL_H], |
| [ |
| dnl Use AC_REQUIRE here, so that the default behavior below is expanded |
| dnl once only, before all statements that occur in other macros. |
| AC_REQUIRE([gl_POLL_H_DEFAULTS]) |
| |
| AC_CHECK_HEADERS_ONCE([poll.h]) |
| if test $ac_cv_header_poll_h = yes; then |
| HAVE_POLL_H=1 |
| else |
| HAVE_POLL_H=0 |
| fi |
| AC_SUBST([HAVE_POLL_H]) |
| |
| dnl <poll.h> is always overridden, because of GNULIB_POSIXCHECK. |
| gl_CHECK_NEXT_HEADERS([poll.h]) |
| |
| gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H |
| |
| dnl Check for declarations of anything we want to poison if the |
| dnl corresponding gnulib module is not in use. |
| gl_WARN_ON_USE_PREPARE([[#include <poll.h>]], |
| [poll]) |
| ]) |
| |
| AC_DEFUN([gl_POLL_MODULE_INDICATOR], |
| [ |
| dnl Use AC_REQUIRE here, so that the default settings are expanded once only. |
| AC_REQUIRE([gl_POLL_H_DEFAULTS]) |
| gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
| dnl Define it also as a C macro, for the benefit of the unit tests. |
| gl_MODULE_INDICATOR_FOR_TESTS([$1]) |
| ]) |
| |
| AC_DEFUN([gl_POLL_H_DEFAULTS], |
| [ |
| GNULIB_POLL=0; AC_SUBST([GNULIB_POLL]) |
| dnl Assume proper GNU behavior unless another module says otherwise. |
| HAVE_POLL=1; AC_SUBST([HAVE_POLL]) |
| REPLACE_POLL=0; AC_SUBST([REPLACE_POLL]) |
| ]) |