ncurses 6.0 - patch 20161210

[ncurses.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index 8252244d8d26dd620567be24f37a273d8606227e..3459f6df43524d98e1f6f058825a8f71a7ea74d5 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 -------------------------------------------------------------------------------
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--- Copyright (c) 1998-2014,2015 Free Software Foundation, Inc.               --
+-- Copyright (c) 1998-2015,2016 Free Software Foundation, Inc.               --

 --                                                                           --
 -- Permission is hereby granted, free of charge, to any person obtaining a   --
 -- copy of this software and associated documentation files (the             --
 --                                                                           --
 -- Permission is hereby granted, free of charge, to any person obtaining a   --
 -- copy of this software and associated documentation files (the             --


@@ -25,7 +25,7 @@
 -- sale, use or other dealings in this Software without prior written        --
 -- authorization.                                                            --
 -------------------------------------------------------------------------------
 -- sale, use or other dealings in this Software without prior written        --
 -- authorization.                                                            --
 -------------------------------------------------------------------------------

--- $Id: INSTALL,v 1.194 2015/10/24 19:03:42 Tomas.Cech Exp $
+-- $Id: INSTALL,v 1.195 2016/12/11 00:41:03 tom Exp $

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              How to install Ncurses/Terminfo on your system
 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
              How to install Ncurses/Terminfo on your system
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@@ -470,6 +470,26 @@ SUMMARY OF CONFIGURE OPTIONS:
        list documented in X/Open.  ncurses provides varargs support for this
        function.  Use --disable-tparm-varargs to disable this support.
 
        list documented in X/Open.  ncurses provides varargs support for this
        function.  Use --disable-tparm-varargs to disable this support.
 

+    --disable-wattr-macros
+       The 6.0 ABI adds support for extended colors and for extended mouse.
+       The former is a noticeable problem when developers inadvertantly
+       compile using the ncurses6 header files and link with an ncurses5
+       library, because the wattr* macros use a new field in the WINDOW
+       structure.  These macros are used in several applications.
+
+       Since ncurses provides an actual function for each of these macros,
+       suppressing them from the curses.h header allows the ncurses5 libraries
+       to be used in most applications.
+
+       NOTE: The extended colors also are used in the cchar_t structure, but
+       fewer applications use that.
+
+       NOTE: This workaround does not help with mismatches in the ncurses
+       mouse version.  The extended mouse feature uses one less fewer bit for
+       each button, so that only the first button will work as expected with
+       a mismatch between header and library.  Again, most applications will
+       work, since most use only the first button.
+

     --enable-assertions
        For testing, compile-in assertion code.  This is used only for a few
        places where ncurses cannot easily recover by returning an error code.
     --enable-assertions
        For testing, compile-in assertion code.  This is used only for a few
        places where ncurses cannot easily recover by returning an error code.