Commit | Line | Data |
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428f9e95 | 1 | # poll_h.m4 serial 2 |
5e69ceb7 | 2 | dnl Copyright (C) 2010-2014 Free Software Foundation, Inc. |
428f9e95 JE |
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. | |
6 | ||
7 | dnl Written by Bruno Haible. | |
8 | ||
9 | AC_DEFUN([gl_POLL_H], | |
10 | [ | |
11 | dnl Use AC_REQUIRE here, so that the default behavior below is expanded | |
12 | dnl once only, before all statements that occur in other macros. | |
13 | AC_REQUIRE([gl_POLL_H_DEFAULTS]) | |
14 | ||
15 | AC_CHECK_HEADERS_ONCE([poll.h]) | |
16 | if test $ac_cv_header_poll_h = yes; then | |
17 | HAVE_POLL_H=1 | |
18 | else | |
19 | HAVE_POLL_H=0 | |
20 | fi | |
21 | AC_SUBST([HAVE_POLL_H]) | |
22 | ||
23 | dnl <poll.h> is always overridden, because of GNULIB_POSIXCHECK. | |
24 | gl_CHECK_NEXT_HEADERS([poll.h]) | |
25 | ||
26 | dnl Check for declarations of anything we want to poison if the | |
27 | dnl corresponding gnulib module is not in use. | |
28 | gl_WARN_ON_USE_PREPARE([[#include <poll.h>]], | |
29 | [poll]) | |
30 | ]) | |
31 | ||
32 | AC_DEFUN([gl_POLL_MODULE_INDICATOR], | |
33 | [ | |
34 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
35 | AC_REQUIRE([gl_POLL_H_DEFAULTS]) | |
36 | gl_MODULE_INDICATOR_SET_VARIABLE([$1]) | |
37 | dnl Define it also as a C macro, for the benefit of the unit tests. | |
38 | gl_MODULE_INDICATOR_FOR_TESTS([$1]) | |
39 | ]) | |
40 | ||
41 | AC_DEFUN([gl_POLL_H_DEFAULTS], | |
42 | [ | |
43 | GNULIB_POLL=0; AC_SUBST([GNULIB_POLL]) | |
44 | dnl Assume proper GNU behavior unless another module says otherwise. | |
45 | HAVE_POLL=1; AC_SUBST([HAVE_POLL]) | |
46 | REPLACE_POLL=0; AC_SUBST([REPLACE_POLL]) | |
47 | ]) |