| 1 | # mbswidth.m4 serial 11
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| 2 | dnl Copyright (C) 2000-2002, 2004 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 wctype.h)
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| 13 | AC_CHECK_FUNCS_ONCE(isascii iswprint mbsinit)
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| 14 | AC_CHECK_FUNCS(iswcntrl wcwidth)
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| 15 | gl_FUNC_MBRTOWC
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| 16 |
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| 17 | AC_CACHE_CHECK([whether wcwidth is declared], ac_cv_have_decl_wcwidth,
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| 18 | [AC_TRY_COMPILE([
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| 19 | /* AIX 3.2.5 declares wcwidth in <string.h>. */
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| 20 | #if HAVE_STRING_H
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| 21 | # include <string.h>
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| 22 | #endif
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| 23 | #if HAVE_WCHAR_H
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| 24 | # include <wchar.h>
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| 25 | #endif
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| 26 | ], [
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| 27 | #ifndef wcwidth
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| 28 | char *p = (char *) wcwidth;
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| 29 | #endif
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| 30 | ], ac_cv_have_decl_wcwidth=yes, ac_cv_have_decl_wcwidth=no)])
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| 31 | if test $ac_cv_have_decl_wcwidth = yes; then
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| 32 | ac_val=1
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| 33 | else
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| 34 | ac_val=0
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| 35 | fi
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| 36 | AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
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| 37 | [Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
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| 38 |
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| 39 | dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
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| 40 | dnl that clashes with ours.
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| 41 | AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
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| 42 | ac_cv_have_decl_mbswidth,
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| 43 | [AC_TRY_COMPILE([
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| 44 | #if HAVE_WCHAR_H
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| 45 | # include <wchar.h>
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| 46 | #endif
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| 47 | ], [
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| 48 | char *p = (char *) mbswidth;
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| 49 | ], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)])
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| 50 | if test $ac_cv_have_decl_mbswidth = yes; then
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| 51 | ac_val=1
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| 52 | else
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| 53 | ac_val=0
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| 54 | fi
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| 55 | AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val,
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| 56 | [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])
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| 57 |
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| 58 | AC_TYPE_MBSTATE_T
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| 59 | ])
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