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comparison m4/errno_h.m4 @ 267:bec6d2480f08 2.6

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Added add'l generated files for release
author lost
date Tue, 22 Dec 2009 05:33:32 +0000
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266:5f25e7afac21 267:bec6d2480f08
1 # errno_h.m4 serial 4
2 dnl Copyright (C) 2004, 2006, 2008, 2009 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.
6
7 dnl This macro must pass through AC_REQUIRE (never directly invoke it).
8 AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
9 [
10 AC_REQUIRE([AC_PROG_CC])
11 AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
12 AC_EGREP_CPP([booboo],[
13 #include <errno.h>
14 #if !defined ENOMSG
15 booboo
16 #endif
17 #if !defined EIDRM
18 booboo
19 #endif
20 #if !defined ENOLINK
21 booboo
22 #endif
23 #if !defined EPROTO
24 booboo
25 #endif
26 #if !defined EMULTIHOP
27 booboo
28 #endif
29 #if !defined EBADMSG
30 booboo
31 #endif
32 #if !defined EOVERFLOW
33 booboo
34 #endif
35 #if !defined ENOTSUP
36 booboo
37 #endif
38 #if !defined ECANCELED
39 booboo
40 #endif
41 ],
42 [gl_cv_header_errno_h_complete=no],
43 [gl_cv_header_errno_h_complete=yes])
44 ])
45 if test $gl_cv_header_errno_h_complete = yes; then
46 ERRNO_H=''
47 else
48 gl_CHECK_NEXT_HEADERS([errno.h])
49 ERRNO_H='errno.h'
50 fi
51 AC_SUBST([ERRNO_H])
52 gl_REPLACE_ERRNO_VALUE([EMULTIHOP])
53 gl_REPLACE_ERRNO_VALUE([ENOLINK])
54 gl_REPLACE_ERRNO_VALUE([EOVERFLOW])
55 ])
56
57 # Assuming $1 = EOVERFLOW.
58 # The EOVERFLOW errno value ought to be defined in <errno.h>, according to
59 # POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and
60 # some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
61 # Check for the value of EOVERFLOW.
62 # Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE.
63 AC_DEFUN([gl_REPLACE_ERRNO_VALUE],
64 [
65 if test -n "$ERRNO_H"; then
66 AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [
67 AC_EGREP_CPP([yes],[
68 #include <errno.h>
69 #ifdef ]$1[
70 yes
71 #endif
72 ],
73 [gl_cv_header_errno_h_]$1[=yes],
74 [gl_cv_header_errno_h_]$1[=no])
75 if test $gl_cv_header_errno_h_]$1[ = no; then
76 AC_EGREP_CPP([yes],[
77 #define _XOPEN_SOURCE_EXTENDED 1
78 #include <errno.h>
79 #ifdef ]$1[
80 yes
81 #endif
82 ], [gl_cv_header_errno_h_]$1[=hidden])
83 if test $gl_cv_header_errno_h_]$1[ = hidden; then
84 dnl The macro exists but is hidden.
85 dnl Define it to the same value.
86 AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [
87 #define _XOPEN_SOURCE_EXTENDED 1
88 #include <errno.h>
89 /* The following two lines are a workaround against an autoconf-2.52 bug. */
90 #include <stdio.h>
91 #include <stdlib.h>
92 ])
93 fi
94 fi
95 ])
96 case $gl_cv_header_errno_h_]$1[ in
97 yes | no)
98 ]$1[_HIDDEN=0; ]$1[_VALUE=
99 ;;
100 *)
101 ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1["
102 ;;
103 esac
104 AC_SUBST($1[_HIDDEN])
105 AC_SUBST($1[_VALUE])
106 fi
107 ])
108
109 dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
110 dnl Remove this when we can assume autoconf >= 2.61.
111 m4_ifdef([AC_COMPUTE_INT], [], [
112 AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
113 ])