mbswidth.m4 revision 1.1.1.1
1# mbswidth.m4 serial 13 2dnl Copyright (C) 2000-2002, 2004, 2006 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl autoconf tests required for use of mbswidth.c 8dnl From Bruno Haible. 9 10AC_DEFUN([gl_MBSWIDTH], 11[ 12 AC_CHECK_HEADERS_ONCE([wchar.h wctype.h]) 13 AC_CHECK_FUNCS_ONCE([isascii mbsinit]) 14 AC_CHECK_FUNCS([iswcntrl]) 15 gl_FUNC_MBRTOWC 16 17 dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth() 18 dnl that clashes with ours. 19 AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>], 20 ac_cv_have_decl_mbswidth, 21 [AC_TRY_COMPILE([ 22#if HAVE_WCHAR_H 23# include <wchar.h> 24#endif 25], [ 26 char *p = (char *) mbswidth; 27 return !p; 28], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)]) 29 if test $ac_cv_have_decl_mbswidth = yes; then 30 ac_val=1 31 else 32 ac_val=0 33 fi 34 AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val, 35 [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.]) 36 37 AC_TYPE_MBSTATE_T 38]) 39