# sys_wait_h.m4 serial 6

dnl Copyright (C) 2008-2017 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.

AC_DEFUN([gl_SYS_WAIT_H],

[

  AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])

  dnl <sys/wait.h> is always overridden, because of GNULIB_POSIXCHECK.

  gl_CHECK_NEXT_HEADERS([sys/wait.h])

  dnl Ensure the type pid_t gets defined.

  AC_REQUIRE([AC_TYPE_PID_T])

  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 <sys/wait.h>]],

    [waitpid])

])

AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],

[

  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.

  AC_REQUIRE([gl_SYS_WAIT_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_SYS_WAIT_H_DEFAULTS],

[

  GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID])

  dnl Assume proper GNU behavior unless another module says otherwise.

])