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gnulib: import sys_wait
[thirdparty/binutils-gdb.git] / gnulib / import / m4 / sys_wait_h.m4
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1# sys_wait_h.m4 serial 6
2dnl Copyright (C) 2008-2021 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])