<br><font size=2 face="Courier New">Hello Wolfgang,</font>
<br><font size=2 face="Courier New"> Thank you for the
tip.. I had left missed the 'ifdef CONFIG_8xx' the last time. Now, the
file libgcc_sf.a is not found. Only libm is found in the $TARGET_LIB. I
think I need to make the RTAI build once again, with soft floating point?!
I don't know how to do this. </font>
<br><font size=2 face="Courier New">ppc_4xx is a fixed point processor
and has no FPU. This is why I want to use soft floating point. </font>
<br><font size=2 face="Courier New">Please tell me how I should proceed
further.</font>
<br>
<br><font size=2 face="Courier New">Just took the ID from the README. Missed
copying the rtai list. Sorry about that.</font>
<br>
<br><font size=2 face="Courier New">Thanks and Regards</font>
<br><font size=2 face="Courier New">Deepa.</font>
<br><font size=2 face="Arial"><br>
</font><font size=3><br>
<b> </b> </font>
<br>
<br>
<br>
<br>
<br><font size=2><tt>deepa.vijayaraghavan@mbtech-group.com schrieb am Fri,
01 Oct 2004 13:25:17 +0200:<br>
> Hello Mr.Grandegger,<br>
> I use IBM PPC 440 based ebony board
with RTAI patched <br>
> linux-ppc-devel OS as target. I also have the ELDK installed in the
<br>
> server. My application needs floating point to work. Could you please
tell <br>
> me how to enable this? <br>
> In the example fp_ppc_8xx, I changed the
$TARGET_LIB in the <br>
> makefile, to $MY_PATH/eldk/ppc_4xx/usr/lib. But only the check application
<br>
> gets built. I know that I am missing something(may be many things:))..<br>
<br>
There is also a "ifdef CONFIG_8xx" in the Makefile. Just comment<br>
this line and the correspondig one with "endif".<br>
<br>
> If you could give me a rough picture of
how soft floating point <br>
> works, and how to get this enabled for (I think I need to make a build
<br>
> again?), it would be great!<br>
<br>
You need to statically link against the libm (for functions like sin, cos,<br>
etc.) the provided soft floating point library emulating the generic<br>
floating point functions, which are executed by a FPU, if avaiable.<br>
<br>
> <br>
> I would like to take this opportunity to also thank you for all the
help <br>
> you've provided through the RTAI mailing list already!<br>
<br>
Thanks, you are welcome. But I prefer that you ask your questions<br>
on the RTAI mailing list as RTAI is a community project.<br>
<br>
Wolfgang.<br>
<br>
<br>
</tt></font>
<br>