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annotate m4/mbswidth.m4 @ 17363:5a51fb7777a9

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sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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1 # mbswidth.m4 serial 18
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2 dnl Copyright (C) 2000-2002, 2004, 2006-2013 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 dnl autoconf tests required for use of mbswidth.c
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8 dnl From Bruno Haible.
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9
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10 AC_DEFUN([gl_MBSWIDTH],
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11 [
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12 AC_CHECK_HEADERS_ONCE([wchar.h])
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13 AC_CHECK_FUNCS_ONCE([isascii mbsinit])
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14
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15 dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
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16 dnl that clashes with ours.
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17 AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
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18 [ac_cv_have_decl_mbswidth],
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19 [AC_COMPILE_IFELSE(
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20 [AC_LANG_PROGRAM(
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21 [[
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22 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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23 <wchar.h>.
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24 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
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25 before <wchar.h>. */
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26 #include <stddef.h>
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27 #include <stdio.h>
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28 #include <time.h>
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29 #include <wchar.h>
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30 ]],
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31 [[
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32 char *p = (char *) mbswidth;
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33 return !p;
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34 ]])],
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35 [ac_cv_have_decl_mbswidth=yes],
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36 [ac_cv_have_decl_mbswidth=no])])
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37 if test $ac_cv_have_decl_mbswidth = yes; then
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38 ac_val=1
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39 else
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40 ac_val=0
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41 fi
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42 AC_DEFINE_UNQUOTED([HAVE_DECL_MBSWIDTH_IN_WCHAR_H], [$ac_val],
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43 [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])
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44
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6cad2b0cd5ce Reflect name change: s/AC_MBSTATE_T/AC_TYPE_MBSTATE_T.
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45 AC_TYPE_MBSTATE_T
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46 ])