manual: skip build when perl is unavailable
[glibc.git] / bits / waitflags.h
blob9ebc3345617ed748e066628c26a8ea1ef5e8ba01
1 /* Definitions of flag bits for `waitpid' et al.
2 Copyright (C) 1992-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #if !defined _SYS_WAIT_H && !defined _STDLIB_H
20 # error "Never include <bits/waitflags.h> directly; use <sys/wait.h> instead."
21 #endif
24 /* Bits in the third argument to `waitpid'. */
25 #define WNOHANG 1 /* Don't block waiting. */
26 #define WUNTRACED 2 /* Report status of stopped children. */