From d2cb3b199a1e8bda46f9e1c275bfe4b8209f1614 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Tue, 27 Jul 2010 12:39:19 +0000
Subject: [PATCH] Add instructions for 32-bit sim build

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2814 42af7a65-404d-4744-a932-0658087f49c3
---
 Documentation/NXGraphicsSubsystem.html |  3 ++-
 TODO                                   | 10 ++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/Documentation/NXGraphicsSubsystem.html b/Documentation/NXGraphicsSubsystem.html
index 382ca06dccf..55bf92f182a 100644
--- a/Documentation/NXGraphicsSubsystem.html
+++ b/Documentation/NXGraphicsSubsystem.html
@@ -12,7 +12,7 @@
       <h1><big><font color="#3c34ec">
         <i>NX Graphics Subsystem</i>
       </font></big></h1>
-      <p>Last Updated: April 23, 2010</p>
+      <p>Last Updated: July 27, 2010</p>
     </td>
   </tr>
 </table>
@@ -2746,6 +2746,7 @@ make
         <li>
           The sim target itself is broken under 64-bit Linux.
           This is because the sim target is based upon some assembly language setjmp/longjmp logic that only works on 32-bit systems.
+          <p><small><b>NOTE</b>: There is a workaround in this case; you can build for 32-bit execution on a 64-bit machine by adding <code>-m3</code> to the <code>CFLAGS</code> and <code>-m32 -m elf_i38</code> to the <code>LDFLAGS</code>.</small></p>
         </li>
       </ul>
     </p>
diff --git a/TODO b/TODO
index b50d2254966..849a2158622 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated July 19, 2010)
+NuttX TODO List (Last updated July 27, 2010)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
   (5)  Task/Scheduler (sched/)
@@ -582,7 +582,13 @@ o Linux/Cywgin simulation (arch/sim)
                   to pointers on a 64-bit host.
                2) up_setjmp.S does not build
   Status:      Open
-  Priority:    Medium and increasing (as 32-bit hosts gradually disappear)
+  Priority:    Medium and increasing (as 32-bit hosts gradually disappear).  NOTE
+               is it possible to work-around this limitation by building the sim
+               target for 32-bit operation on a 64-bit platform.  Simply modify the
+               Make.defs file in the appropriate places so that:
+               
+               ARCHCPUFLAGS = -m32 -fno-builtin
+               LDFLAGS += -m32 -m elf_i386
 
 o ARM (arch/arm/)
   ^^^^^^^^^^^^^^^