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| 1 # mbswidth.m4 serial 14 |
| 2 dnl Copyright (C) 2000-2002, 2004, 2006, 2007 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 autoconf tests required for use of mbswidth.c |
| 8 dnl From Bruno Haible. |
| 9 |
| 10 AC_DEFUN([gl_MBSWIDTH], |
| 11 [ |
| 12 AC_CHECK_HEADERS_ONCE([wchar.h]) |
| 13 AC_CHECK_FUNCS_ONCE([isascii mbsinit]) |
| 14 gl_FUNC_MBRTOWC |
| 15 |
| 16 dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth() |
| 17 dnl that clashes with ours. |
| 18 AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>], |
| 19 ac_cv_have_decl_mbswidth, |
| 20 [AC_TRY_COMPILE([ |
| 21 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| 22 <wchar.h>. |
| 23 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included |
| 24 before <wchar.h>. */ |
| 25 #include <stddef.h> |
| 26 #include <stdio.h> |
| 27 #include <time.h> |
| 28 #include <wchar.h> |
| 29 ], [ |
| 30 char *p = (char *) mbswidth; |
| 31 return !p; |
| 32 ], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)]) |
| 33 if test $ac_cv_have_decl_mbswidth = yes; then |
| 34 ac_val=1 |
| 35 else |
| 36 ac_val=0 |
| 37 fi |
| 38 AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val, |
| 39 [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0
otherwise.]) |
| 40 |
| 41 AC_TYPE_MBSTATE_T |
| 42 ]) |
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