1# unistd_h.m4 serial 81
2dnl Copyright (C) 2006-2020 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
7dnl Written by Simon Josefsson, Bruno Haible.
8
9AC_DEFUN([gl_UNISTD_H],
10[
11  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
12  dnl once only, before all statements that occur in other macros.
13  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
14
15  gl_CHECK_NEXT_HEADERS([unistd.h])
16  if test $ac_cv_header_unistd_h = yes; then
17    HAVE_UNISTD_H=1
18  else
19    HAVE_UNISTD_H=0
20  fi
21  AC_SUBST([HAVE_UNISTD_H])
22
23  dnl Ensure the type pid_t gets defined.
24  AC_REQUIRE([AC_TYPE_PID_T])
25
26  dnl Determine WINDOWS_64_BIT_OFF_T.
27  AC_REQUIRE([gl_TYPE_OFF_T])
28
29  dnl Check for declarations of anything we want to poison if the
30  dnl corresponding gnulib module is not in use.
31  gl_WARN_ON_USE_PREPARE([[
32#if HAVE_UNISTD_H
33# include <unistd.h>
34#endif
35/* Some systems declare various items in the wrong headers.  */
36#if !(defined __GLIBC__ && !defined __UCLIBC__)
37# include <fcntl.h>
38# include <stdio.h>
39# include <stdlib.h>
40# if defined _WIN32 && ! defined __CYGWIN__
41#  include <io.h>
42# endif
43#endif
44    ]], [access chdir chown dup dup2 dup3 environ euidaccess faccessat fchdir
45    fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
46    getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
47    getusershell setusershell endusershell
48    group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
49    readlink readlinkat rmdir sethostname sleep symlink symlinkat
50    truncate ttyname_r unlink unlinkat usleep])
51
52  AC_REQUIRE([AC_C_RESTRICT])
53])
54
55AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
56[
57  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
58  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
59  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
60  dnl Define it also as a C macro, for the benefit of the unit tests.
61  gl_MODULE_INDICATOR_FOR_TESTS([$1])
62])
63
64AC_DEFUN([gl_UNISTD_H_DEFAULTS],
65[
66  GNULIB_ACCESS=0;               AC_SUBST([GNULIB_ACCESS])
67  GNULIB_CHDIR=0;                AC_SUBST([GNULIB_CHDIR])
68  GNULIB_CHOWN=0;                AC_SUBST([GNULIB_CHOWN])
69  GNULIB_CLOSE=0;                AC_SUBST([GNULIB_CLOSE])
70  GNULIB_COPY_FILE_RANGE=0;      AC_SUBST([GNULIB_COPY_FILE_RANGE])
71  GNULIB_DUP=0;                  AC_SUBST([GNULIB_DUP])
72  GNULIB_DUP2=0;                 AC_SUBST([GNULIB_DUP2])
73  GNULIB_DUP3=0;                 AC_SUBST([GNULIB_DUP3])
74  GNULIB_ENVIRON=0;              AC_SUBST([GNULIB_ENVIRON])
75  GNULIB_EUIDACCESS=0;           AC_SUBST([GNULIB_EUIDACCESS])
76  GNULIB_FACCESSAT=0;            AC_SUBST([GNULIB_FACCESSAT])
77  GNULIB_FCHDIR=0;               AC_SUBST([GNULIB_FCHDIR])
78  GNULIB_FCHOWNAT=0;             AC_SUBST([GNULIB_FCHOWNAT])
79  GNULIB_FDATASYNC=0;            AC_SUBST([GNULIB_FDATASYNC])
80  GNULIB_FSYNC=0;                AC_SUBST([GNULIB_FSYNC])
81  GNULIB_FTRUNCATE=0;            AC_SUBST([GNULIB_FTRUNCATE])
82  GNULIB_GETCWD=0;               AC_SUBST([GNULIB_GETCWD])
83  GNULIB_GETDOMAINNAME=0;        AC_SUBST([GNULIB_GETDOMAINNAME])
84  GNULIB_GETDTABLESIZE=0;        AC_SUBST([GNULIB_GETDTABLESIZE])
85  GNULIB_GETENTROPY=0;           AC_SUBST([GNULIB_GETENTROPY])
86  GNULIB_GETGROUPS=0;            AC_SUBST([GNULIB_GETGROUPS])
87  GNULIB_GETHOSTNAME=0;          AC_SUBST([GNULIB_GETHOSTNAME])
88  GNULIB_GETLOGIN=0;             AC_SUBST([GNULIB_GETLOGIN])
89  GNULIB_GETLOGIN_R=0;           AC_SUBST([GNULIB_GETLOGIN_R])
90  GNULIB_GETOPT_POSIX=0;         AC_SUBST([GNULIB_GETOPT_POSIX])
91  GNULIB_GETPAGESIZE=0;          AC_SUBST([GNULIB_GETPAGESIZE])
92  GNULIB_GETPASS=0;              AC_SUBST([GNULIB_GETPASS])
93  GNULIB_GETUSERSHELL=0;         AC_SUBST([GNULIB_GETUSERSHELL])
94  GNULIB_GROUP_MEMBER=0;         AC_SUBST([GNULIB_GROUP_MEMBER])
95  GNULIB_ISATTY=0;               AC_SUBST([GNULIB_ISATTY])
96  GNULIB_LCHOWN=0;               AC_SUBST([GNULIB_LCHOWN])
97  GNULIB_LINK=0;                 AC_SUBST([GNULIB_LINK])
98  GNULIB_LINKAT=0;               AC_SUBST([GNULIB_LINKAT])
99  GNULIB_LSEEK=0;                AC_SUBST([GNULIB_LSEEK])
100  GNULIB_PIPE=0;                 AC_SUBST([GNULIB_PIPE])
101  GNULIB_PIPE2=0;                AC_SUBST([GNULIB_PIPE2])
102  GNULIB_PREAD=0;                AC_SUBST([GNULIB_PREAD])
103  GNULIB_PWRITE=0;               AC_SUBST([GNULIB_PWRITE])
104  GNULIB_READ=0;                 AC_SUBST([GNULIB_READ])
105  GNULIB_READLINK=0;             AC_SUBST([GNULIB_READLINK])
106  GNULIB_READLINKAT=0;           AC_SUBST([GNULIB_READLINKAT])
107  GNULIB_RMDIR=0;                AC_SUBST([GNULIB_RMDIR])
108  GNULIB_SETHOSTNAME=0;          AC_SUBST([GNULIB_SETHOSTNAME])
109  GNULIB_SLEEP=0;                AC_SUBST([GNULIB_SLEEP])
110  GNULIB_SYMLINK=0;              AC_SUBST([GNULIB_SYMLINK])
111  GNULIB_SYMLINKAT=0;            AC_SUBST([GNULIB_SYMLINKAT])
112  GNULIB_TRUNCATE=0;             AC_SUBST([GNULIB_TRUNCATE])
113  GNULIB_TTYNAME_R=0;            AC_SUBST([GNULIB_TTYNAME_R])
114  GNULIB_UNISTD_H_NONBLOCKING=0; AC_SUBST([GNULIB_UNISTD_H_NONBLOCKING])
115  GNULIB_UNISTD_H_SIGPIPE=0;     AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
116  GNULIB_UNLINK=0;               AC_SUBST([GNULIB_UNLINK])
117  GNULIB_UNLINKAT=0;             AC_SUBST([GNULIB_UNLINKAT])
118  GNULIB_USLEEP=0;               AC_SUBST([GNULIB_USLEEP])
119  GNULIB_WRITE=0;                AC_SUBST([GNULIB_WRITE])
120  dnl Assume proper GNU behavior unless another module says otherwise.
121  HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
122  HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
123  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
124  HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
125  HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
126  HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])
127  HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
128  HAVE_FDATASYNC=1;       AC_SUBST([HAVE_FDATASYNC])
129  HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
130  HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
131  HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])
132  HAVE_GETENTROPY=1;      AC_SUBST([HAVE_GETENTROPY])
133  HAVE_GETGROUPS=1;       AC_SUBST([HAVE_GETGROUPS])
134  HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
135  HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
136  HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
137  HAVE_GETPASS=1;         AC_SUBST([HAVE_GETPASS])
138  HAVE_GROUP_MEMBER=1;    AC_SUBST([HAVE_GROUP_MEMBER])
139  HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
140  HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
141  HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])
142  HAVE_PIPE=1;            AC_SUBST([HAVE_PIPE])
143  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
144  HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])
145  HAVE_PWRITE=1;          AC_SUBST([HAVE_PWRITE])
146  HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
147  HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
148  HAVE_SETHOSTNAME=1;     AC_SUBST([HAVE_SETHOSTNAME])
149  HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
150  HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
151  HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
152  HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
153  HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
154  HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
155  HAVE_DECL_FCHDIR=1;     AC_SUBST([HAVE_DECL_FCHDIR])
156  HAVE_DECL_FDATASYNC=1;  AC_SUBST([HAVE_DECL_FDATASYNC])
157  HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
158  HAVE_DECL_GETLOGIN=1;   AC_SUBST([HAVE_DECL_GETLOGIN])
159  HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
160  HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
161  HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
162  HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
163  HAVE_DECL_TRUNCATE=1;   AC_SUBST([HAVE_DECL_TRUNCATE])
164  HAVE_DECL_TTYNAME_R=1;  AC_SUBST([HAVE_DECL_TTYNAME_R])
165  HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
166  HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
167  REPLACE_ACCESS=0;       AC_SUBST([REPLACE_ACCESS])
168  REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
169  REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
170  REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
171  REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
172  REPLACE_FACCESSAT=0;    AC_SUBST([REPLACE_FACCESSAT])
173  REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
174  REPLACE_FTRUNCATE=0;    AC_SUBST([REPLACE_FTRUNCATE])
175  REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])
176  REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
177  REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])
178  REPLACE_GETLOGIN_R=0;   AC_SUBST([REPLACE_GETLOGIN_R])
179  REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
180  REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])
181  REPLACE_GETPASS=0;      AC_SUBST([REPLACE_GETPASS])
182  REPLACE_ISATTY=0;       AC_SUBST([REPLACE_ISATTY])
183  REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])
184  REPLACE_LINK=0;         AC_SUBST([REPLACE_LINK])
185  REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
186  REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
187  REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])
188  REPLACE_PWRITE=0;       AC_SUBST([REPLACE_PWRITE])
189  REPLACE_READ=0;         AC_SUBST([REPLACE_READ])
190  REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
191  REPLACE_READLINKAT=0;   AC_SUBST([REPLACE_READLINKAT])
192  REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
193  REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
194  REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
195  REPLACE_SYMLINKAT=0;    AC_SUBST([REPLACE_SYMLINKAT])
196  REPLACE_TRUNCATE=0;     AC_SUBST([REPLACE_TRUNCATE])
197  REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])
198  REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
199  REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
200  REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])
201  REPLACE_WRITE=0;        AC_SUBST([REPLACE_WRITE])
202  UNISTD_H_HAVE_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
203  UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
204  UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
205                           AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
206])
207