1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
# errno_h.m4 serial 14
dnl Copyright (C) 2004, 2006, 2008-2022 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_PREREQ([2.61])
AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
[
AC_REQUIRE([AC_PROG_CC])
AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
AC_EGREP_CPP([booboo],[
#include <errno.h>
#if !defined ETXTBSY
booboo
#endif
#if !defined ENOMSG
booboo
#endif
#if !defined EIDRM
booboo
#endif
#if !defined ENOLINK
booboo
#endif
#if !defined EPROTO
booboo
#endif
#if !defined EMULTIHOP
booboo
#endif
#if !defined EBADMSG
booboo
#endif
#if !defined EOVERFLOW
booboo
#endif
#if !defined ENOTSUP
booboo
#endif
#if !defined ENETRESET
booboo
#endif
#if !defined ECONNABORTED
booboo
#endif
#if !defined ESTALE
booboo
#endif
#if !defined EDQUOT
booboo
#endif
#if !defined ECANCELED
booboo
#endif
#if !defined EOWNERDEAD
booboo
#endif
#if !defined ENOTRECOVERABLE
booboo
#endif
#if !defined EILSEQ
booboo
#endif
],
[gl_cv_header_errno_h_complete=no],
[gl_cv_header_errno_h_complete=yes])
])
if test $gl_cv_header_errno_h_complete = yes; then
GL_GENERATE_ERRNO_H=false
else
gl_NEXT_HEADERS([errno.h])
GL_GENERATE_ERRNO_H=true
fi
gl_REPLACE_ERRNO_VALUE([EMULTIHOP])
gl_REPLACE_ERRNO_VALUE([ENOLINK])
gl_REPLACE_ERRNO_VALUE([EOVERFLOW])
])
# Assuming $1 = EOVERFLOW.
# The EOVERFLOW errno value ought to be defined in <errno.h>, according to
# POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and
# some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
# Check for the value of EOVERFLOW.
# Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE.
AC_DEFUN([gl_REPLACE_ERRNO_VALUE],
[
if $GL_GENERATE_ERRNO_H; then
AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [
AC_EGREP_CPP([yes],[
#include <errno.h>
#ifdef ]$1[
yes
#endif
],
[gl_cv_header_errno_h_]$1[=yes],
[gl_cv_header_errno_h_]$1[=no])
if test $gl_cv_header_errno_h_]$1[ = no; then
AC_EGREP_CPP([yes],[
#define _XOPEN_SOURCE_EXTENDED 1
#include <errno.h>
#ifdef ]$1[
yes
#endif
], [gl_cv_header_errno_h_]$1[=hidden])
if test $gl_cv_header_errno_h_]$1[ = hidden; then
dnl The macro exists but is hidden.
dnl Define it to the same value.
AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [
#define _XOPEN_SOURCE_EXTENDED 1
#include <errno.h>
/* The following two lines are a workaround against an autoconf-2.52 bug. */
#include <stdio.h>
#include <stdlib.h>
])
fi
fi
])
case $gl_cv_header_errno_h_]$1[ in
yes | no)
]$1[_HIDDEN=0; ]$1[_VALUE=
;;
*)
]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1["
;;
esac
AC_SUBST($1[_HIDDEN])
AC_SUBST($1[_VALUE])
fi
])
|
