Fix NEWS entry for M-SPC change.
[bpt/emacs.git] / m4 / unistd_h.m4
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3f44249e 1# unistd_h.m4 serial 57
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2dnl Copyright (C) 2006-2011 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 AC_REQUIRE([AC_C_INLINE])
15
16 gl_CHECK_NEXT_HEADERS([unistd.h])
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17 if test $ac_cv_header_unistd_h = yes; then
18 HAVE_UNISTD_H=1
19 else
20 HAVE_UNISTD_H=0
21 fi
22 AC_SUBST([HAVE_UNISTD_H])
23
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24 dnl Ensure the type pid_t gets defined.
25 AC_REQUIRE([AC_TYPE_PID_T])
26
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27 dnl Check for declarations of anything we want to poison if the
28 dnl corresponding gnulib module is not in use.
29 gl_WARN_ON_USE_PREPARE([[#include <unistd.h>
30/* Some systems declare various items in the wrong headers. */
31#if !(defined __GLIBC__ && !defined __UCLIBC__)
32# include <fcntl.h>
33# include <stdio.h>
34# include <stdlib.h>
35# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
36# include <io.h>
37# endif
38#endif
39 ]], [chown dup2 dup3 environ euidaccess faccessat fchdir fchownat
40 fsync ftruncate getcwd getdomainname getdtablesize getgroups
41 gethostname getlogin getlogin_r getpagesize getusershell setusershell
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42 endusershell group_member lchown link linkat lseek pipe pipe2 pread pwrite
43 readlink readlinkat rmdir sleep symlink symlinkat ttyname_r unlink unlinkat
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44 usleep])
45])
46
47AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
48[
49 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
50 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
51 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
52 dnl Define it also as a C macro, for the benefit of the unit tests.
53 gl_MODULE_INDICATOR_FOR_TESTS([$1])
54])
55
56AC_DEFUN([gl_UNISTD_H_DEFAULTS],
57[
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58 GNULIB_CHOWN=0; AC_SUBST([GNULIB_CHOWN])
59 GNULIB_CLOSE=0; AC_SUBST([GNULIB_CLOSE])
60 GNULIB_DUP2=0; AC_SUBST([GNULIB_DUP2])
61 GNULIB_DUP3=0; AC_SUBST([GNULIB_DUP3])
62 GNULIB_ENVIRON=0; AC_SUBST([GNULIB_ENVIRON])
63 GNULIB_EUIDACCESS=0; AC_SUBST([GNULIB_EUIDACCESS])
64 GNULIB_FACCESSAT=0; AC_SUBST([GNULIB_FACCESSAT])
65 GNULIB_FCHDIR=0; AC_SUBST([GNULIB_FCHDIR])
66 GNULIB_FCHOWNAT=0; AC_SUBST([GNULIB_FCHOWNAT])
67 GNULIB_FSYNC=0; AC_SUBST([GNULIB_FSYNC])
68 GNULIB_FTRUNCATE=0; AC_SUBST([GNULIB_FTRUNCATE])
69 GNULIB_GETCWD=0; AC_SUBST([GNULIB_GETCWD])
70 GNULIB_GETDOMAINNAME=0; AC_SUBST([GNULIB_GETDOMAINNAME])
71 GNULIB_GETDTABLESIZE=0; AC_SUBST([GNULIB_GETDTABLESIZE])
72 GNULIB_GETGROUPS=0; AC_SUBST([GNULIB_GETGROUPS])
73 GNULIB_GETHOSTNAME=0; AC_SUBST([GNULIB_GETHOSTNAME])
74 GNULIB_GETLOGIN=0; AC_SUBST([GNULIB_GETLOGIN])
75 GNULIB_GETLOGIN_R=0; AC_SUBST([GNULIB_GETLOGIN_R])
76 GNULIB_GETPAGESIZE=0; AC_SUBST([GNULIB_GETPAGESIZE])
77 GNULIB_GETUSERSHELL=0; AC_SUBST([GNULIB_GETUSERSHELL])
1fc5f204 78 GNULIB_GROUP_MEMBER=0; AC_SUBST([GNULIB_GROUP_MEMBER])
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79 GNULIB_LCHOWN=0; AC_SUBST([GNULIB_LCHOWN])
80 GNULIB_LINK=0; AC_SUBST([GNULIB_LINK])
81 GNULIB_LINKAT=0; AC_SUBST([GNULIB_LINKAT])
82 GNULIB_LSEEK=0; AC_SUBST([GNULIB_LSEEK])
83 GNULIB_PIPE=0; AC_SUBST([GNULIB_PIPE])
84 GNULIB_PIPE2=0; AC_SUBST([GNULIB_PIPE2])
85 GNULIB_PREAD=0; AC_SUBST([GNULIB_PREAD])
86 GNULIB_PWRITE=0; AC_SUBST([GNULIB_PWRITE])
87 GNULIB_READ=0; AC_SUBST([GNULIB_READ])
88 GNULIB_READLINK=0; AC_SUBST([GNULIB_READLINK])
89 GNULIB_READLINKAT=0; AC_SUBST([GNULIB_READLINKAT])
90 GNULIB_RMDIR=0; AC_SUBST([GNULIB_RMDIR])
91 GNULIB_SLEEP=0; AC_SUBST([GNULIB_SLEEP])
92 GNULIB_SYMLINK=0; AC_SUBST([GNULIB_SYMLINK])
93 GNULIB_SYMLINKAT=0; AC_SUBST([GNULIB_SYMLINKAT])
94 GNULIB_TTYNAME_R=0; AC_SUBST([GNULIB_TTYNAME_R])
95 GNULIB_UNISTD_H_GETOPT=0; AC_SUBST([GNULIB_UNISTD_H_GETOPT])
96 GNULIB_UNISTD_H_NONBLOCKING=0; AC_SUBST([GNULIB_UNISTD_H_NONBLOCKING])
97 GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
98 GNULIB_UNLINK=0; AC_SUBST([GNULIB_UNLINK])
99 GNULIB_UNLINKAT=0; AC_SUBST([GNULIB_UNLINKAT])
100 GNULIB_USLEEP=0; AC_SUBST([GNULIB_USLEEP])
101 GNULIB_WRITE=0; AC_SUBST([GNULIB_WRITE])
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102 dnl Assume proper GNU behavior unless another module says otherwise.
103 HAVE_CHOWN=1; AC_SUBST([HAVE_CHOWN])
104 HAVE_DUP2=1; AC_SUBST([HAVE_DUP2])
105 HAVE_DUP3=1; AC_SUBST([HAVE_DUP3])
106 HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS])
107 HAVE_FACCESSAT=1; AC_SUBST([HAVE_FACCESSAT])
108 HAVE_FCHDIR=1; AC_SUBST([HAVE_FCHDIR])
109 HAVE_FCHOWNAT=1; AC_SUBST([HAVE_FCHOWNAT])
110 HAVE_FSYNC=1; AC_SUBST([HAVE_FSYNC])
111 HAVE_FTRUNCATE=1; AC_SUBST([HAVE_FTRUNCATE])
112 HAVE_GETDTABLESIZE=1; AC_SUBST([HAVE_GETDTABLESIZE])
113 HAVE_GETGROUPS=1; AC_SUBST([HAVE_GETGROUPS])
114 HAVE_GETHOSTNAME=1; AC_SUBST([HAVE_GETHOSTNAME])
115 HAVE_GETLOGIN=1; AC_SUBST([HAVE_GETLOGIN])
116 HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE])
1fc5f204 117 HAVE_GROUP_MEMBER=1; AC_SUBST([HAVE_GROUP_MEMBER])
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118 HAVE_LCHOWN=1; AC_SUBST([HAVE_LCHOWN])
119 HAVE_LINK=1; AC_SUBST([HAVE_LINK])
120 HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT])
121 HAVE_PIPE=1; AC_SUBST([HAVE_PIPE])
122 HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2])
123 HAVE_PREAD=1; AC_SUBST([HAVE_PREAD])
124 HAVE_PWRITE=1; AC_SUBST([HAVE_PWRITE])
125 HAVE_READLINK=1; AC_SUBST([HAVE_READLINK])
126 HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT])
127 HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP])
128 HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK])
129 HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT])
130 HAVE_UNLINKAT=1; AC_SUBST([HAVE_UNLINKAT])
131 HAVE_USLEEP=1; AC_SUBST([HAVE_USLEEP])
132 HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON])
133 HAVE_DECL_FCHDIR=1; AC_SUBST([HAVE_DECL_FCHDIR])
134 HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
135 HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
136 HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
137 HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
138 HAVE_DECL_TTYNAME_R=1; AC_SUBST([HAVE_DECL_TTYNAME_R])
139 HAVE_OS_H=0; AC_SUBST([HAVE_OS_H])
140 HAVE_SYS_PARAM_H=0; AC_SUBST([HAVE_SYS_PARAM_H])
141 REPLACE_CHOWN=0; AC_SUBST([REPLACE_CHOWN])
142 REPLACE_CLOSE=0; AC_SUBST([REPLACE_CLOSE])
143 REPLACE_DUP=0; AC_SUBST([REPLACE_DUP])
144 REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2])
145 REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT])
146 REPLACE_GETCWD=0; AC_SUBST([REPLACE_GETCWD])
147 REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
148 REPLACE_GETLOGIN_R=0; AC_SUBST([REPLACE_GETLOGIN_R])
149 REPLACE_GETGROUPS=0; AC_SUBST([REPLACE_GETGROUPS])
150 REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE])
151 REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
152 REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])
153 REPLACE_LINKAT=0; AC_SUBST([REPLACE_LINKAT])
154 REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK])
155 REPLACE_PREAD=0; AC_SUBST([REPLACE_PREAD])
156 REPLACE_PWRITE=0; AC_SUBST([REPLACE_PWRITE])
cc2e7b46 157 REPLACE_READ=0; AC_SUBST([REPLACE_READ])
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158 REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK])
159 REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR])
160 REPLACE_SLEEP=0; AC_SUBST([REPLACE_SLEEP])
161 REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK])
162 REPLACE_TTYNAME_R=0; AC_SUBST([REPLACE_TTYNAME_R])
163 REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK])
164 REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT])
165 REPLACE_USLEEP=0; AC_SUBST([REPLACE_USLEEP])
166 REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE])
167 UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
168 UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
169 AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
170])