-# wcwidth.m4 serial 2
+# wcwidth.m4 serial 5
dnl Copyright (C) 2006 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_CHECK_HEADERS_ONCE([wchar.h wctype.h])
AC_CHECK_FUNCS_ONCE([iswprint wcwidth])
- AC_CACHE_CHECK([whether wcwidth is declared], [ac_cv_have_decl_wcwidth],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
+ AC_CHECK_DECLS([wcwidth], [], [], [
/* AIX 3.2.5 declares wcwidth in <string.h>. */
-#if HAVE_STRING_H
-# include <string.h>
-#endif
+#include <string.h>
#if HAVE_WCHAR_H
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
+ <wchar.h>. */
+# include <stdio.h>
+# include <time.h>
# include <wchar.h>
#endif
-], [
-#ifndef wcwidth
- char *p = (char *) wcwidth;
-#endif
-])], [ac_cv_have_decl_wcwidth=yes], [ac_cv_have_decl_wcwidth=no])])
- if test $ac_cv_have_decl_wcwidth = yes; then
- ac_val=1
- else
- ac_val=0
- fi
- AC_DEFINE_UNQUOTED([HAVE_DECL_WCWIDTH], [$ac_val],
- [Define to 1 if you have the declaration of wcwidth(), and to 0
- otherwise.])
-])
+])])