ncurses 6.4 - patch 20240302

[ncurses.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index b2b9c3f8f50f81125371883883bf1b4d96c9d933..96d04519dc1f3574cd215ea68a1d17cef1295093 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,5 +1,5 @@
 dnl***************************************************************************
-dnl Copyright 2018-2022,2023 Thomas E. Dickey                                *
+dnl Copyright 2018-2023,2024 Thomas E. Dickey                                *
 dnl Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
 dnl                                                                          *
 dnl Permission is hereby granted, free of charge, to any person obtaining a  *
@@ -29,7 +29,7 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.1062 2023/12/04 00:39:37 tom Exp $
+dnl $Id: aclocal.m4,v 1.1063 2024/03/02 20:46:07 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
@@ -5938,6 +5938,31 @@ AC_ARG_WITH(manpage-tbl,
 AC_MSG_RESULT($MANPAGE_TBL)
 ])dnl
 dnl ---------------------------------------------------------------------------
+dnl CF_MB_LEN_MAX version: 1 updated: 2024/03/02 15:45:10
+dnl -------------
+dnl Check if <limits.h> defines a usable MB_LEN_MAX.  That may be because it is
+dnl not defined, or it may be a bogus value.
+AC_DEFUN([CF_MB_LEN_MAX],[
+AC_CACHE_CHECK(if MB_LEN_MAX is usable,cf_cv_mb_len_max,[
+AC_TRY_COMPILE([
+$ac_includes_default
+#include <limits.h>],
+[
+#if defined(MB_LEN_MAX) && MB_LEN_MAX >= 6
+       ${cf_cv_main_return:-return}(0);
+#else
+#error MB_LEN_MAX is not usable
+#endif
+],     [cf_cv_mb_len_max=yes],
+       [cf_cv_mb_len_max=no])])
+if test "$cf_cv_mb_len_max" = yes
+then
+       AC_DEFINE(HAVE_CONSISTENT_MB_LEN_MAX,1,[Define to 1 if MB_LEN_MAX is usable])
+else
+       AC_MSG_WARN(MB_LEN_MAX is missing/inconsistent in system headers)
+fi
+])dnl
+dnl ---------------------------------------------------------------------------
 dnl CF_MAN_PAGES version: 58 updated: 2023/07/28 20:13:29
 dnl ------------
 dnl Try to determine if the man-pages on the system are compressed, and if