1 # sys_wait_h.m4 serial 5
2 dnl Copyright (C) 2008-2011 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 Check for declarations of anything we want to poison if the
15 dnl corresponding gnulib module is not in use.
16 gl_WARN_ON_USE_PREPARE([[#include <sys/wait.h>]],
20 AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR],
22 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
23 AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])
24 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
25 dnl Define it also as a C macro, for the benefit of the unit tests.
26 gl_MODULE_INDICATOR_FOR_TESTS([$1])
29 AC_DEFUN([gl_SYS_WAIT_H_DEFAULTS],
31 GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID])
32 dnl Assume proper GNU behavior unless another module says otherwise.