-#serial 5
+# mbswidth.m4 serial 11
+dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
dnl autoconf tests required for use of mbswidth.c
dnl From Bruno Haible.
-AC_DEFUN(jm_PREREQ_MBSWIDTH,
+AC_DEFUN([gl_MBSWIDTH],
[
- AC_REQUIRE([AC_HEADER_STDC])
- AC_CHECK_HEADERS(limits.h stdlib.h string.h wchar.h wctype.h)
- AC_CHECK_FUNCS(isascii iswcntrl iswprint mbsinit wcwidth)
- jm_FUNC_MBRTOWC
+ AC_CHECK_HEADERS_ONCE(wchar.h wctype.h)
+ AC_CHECK_FUNCS_ONCE(isascii iswprint mbsinit)
+ AC_CHECK_FUNCS(iswcntrl wcwidth)
+ gl_FUNC_MBRTOWC
AC_CACHE_CHECK([whether wcwidth is declared], ac_cv_have_decl_wcwidth,
[AC_TRY_COMPILE([
AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
[Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
- AC_MBSTATE_T
+ dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
+ dnl that clashes with ours.
+ AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
+ ac_cv_have_decl_mbswidth,
+ [AC_TRY_COMPILE([
+#if HAVE_WCHAR_H
+# include <wchar.h>
+#endif
+], [
+ char *p = (char *) mbswidth;
+], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)])
+ if test $ac_cv_have_decl_mbswidth = yes; then
+ ac_val=1
+ else
+ ac_val=0
+ fi
+ AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val,
+ [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])
+
+ AC_TYPE_MBSTATE_T
])