1# sys_wait_h.m4 serial 6
2dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_SYS_WAIT_H],
8[
9  AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])
10
11  dnl <sys/wait.h> is always overridden, because of GNULIB_POSIXCHECK.
12  gl_CHECK_NEXT_HEADERS([sys/wait.h])
13
14  dnl Ensure the type pid_t gets defined.
15  AC_REQUIRE([AC_TYPE_PID_T])
16
17  dnl Check for declarations of anything we want to poison if the
18  dnl corresponding gnulib module is not in use.
19  gl_WARN_ON_USE_PREPARE([[#include <sys/wait.h>]],
20    [waitpid])
21])
22
23AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],
24[
25  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
26  AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])
27  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
28  dnl Define it also as a C macro, for the benefit of the unit tests.
29  gl_MODULE_INDICATOR_FOR_TESTS([$1])
30])
31
32AC_DEFUN([gl_SYS_WAIT_H_DEFAULTS],
33[
34  GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID])
35  dnl Assume proper GNU behavior unless another module says otherwise.
36])
37