1 # sys_wait_h.m4 serial 6
2 dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
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.
7 AC_DEFUN([gl_SYS_WAIT_H],
9 AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])
11 dnl <sys/wait.h> is always overridden, because of GNULIB_POSIXCHECK.
12 gl_CHECK_NEXT_HEADERS([sys/wait.h])
14 dnl Ensure the type pid_t gets defined.
15 AC_REQUIRE([AC_TYPE_PID_T])
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>]],
23 AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],
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])
32 AC_DEFUN([gl_SYS_WAIT_H_DEFAULTS],
34 GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID])
35 dnl Assume proper GNU behavior unless another module says otherwise.