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Fix workaround description 

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2818 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-07-30 12:41:02 +00:00
parent e432b89abf
commit 432408f707
2 changed files with 10 additions and 6 deletions
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6
Documentation/NXGraphicsSubsystem.html
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@ -2746,7 +2746,11 @@ 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>
<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_i386</code> to the <code>LDFLAGS</code>.
See the patch file <code>0001-Quick-hacks-to-build-sim-nsh-ostest-on-x86_64-as-32-.patch</code>
that can be found in NuttX <a href="http://tech.groups.yahoo.com/group/nuttx/files">files</a>.
</small></p>
</li>
</ul>
</p>

10
TODO
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@ -584,11 +584,11 @@ o Linux/Cywgin simulation (arch/sim)
Status: Open
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
target for 32-bit operation on a 64-bit platform. Modify the
Make.defs file in the appropriate places so that -m32 is included
in the CFLAGS and -m32 and -melf_386 are included in the LDFLAGS.
See the patch 0001-Quick-hacks-to-build-sim-nsh-ostest-on-x86_64-as-32-.patch
that can be found at http://tech.groups.yahoo.com/group/nuttx/files.
Description: I never did get networking to work on the sim target. It tries to
use the tap device (/dev/net/tun) to emulate an Ethernet NIC, but I