Subject:
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Re: Linux legos install help me please
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 10 Dec 2003 17:39:11 GMT
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Viewed:
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7944 times
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Sebastian Scott wrote:
> Wow thanks for the speedy response nanobapt. I am going to attempt to run legnoppix as a guestthrough VMware tonight. I will keep you posted on how that goes. Whati am really interested in is the math.
>
> Nano wrote
>
>
> > For Debian : you need to compile the math.c with the kernel and put the
> > math.h in the include file .... In legOS 0.2.6 you only need to add a
> > line in the makefile in the boot directory ! but I don't know if it's
> > the same in last version.
> >
> > Or an other way is to use legnoppix ;-)
> >
> > nanobapt
> >
> >
>
> 1st Are you saying that lenoppix already has math.h
>
>
Oups nbo sorry ... not for the moment but I can implement it !!
Oh if someone know how to make work the USB tower under linux (to add
this function to legnoppix) that would be fun
> 2nd If my first question is not correct and all goes to plan using legnoppix as
> a host in VMware and I do need to maually do it the hard way can I clarify a few
> things is math.h only what is below? And math.c the rst (from your original
> posting)?
>
>
> /*math.h*/
>
> #define PI 3.1415
>
> /*
> *puiss(2, 3) == 2^3
> */
>
> extern float puiss(float nb, int deg);
>
> /*
> *factor(5) == 5!
> *be aware taht the RCX can't calculate foctor like 20! :)
> */
>
> extern int factor(int n);
>
> /*
> *Precision is not really good but enought for the RCX
> */
>
> extern float sin(float x);
> extern float cos(float x);
>
>
Yes that only this file ...
> 3rd when you say compile math.c with the kernel, do you mean put math.c in
> brickos/kernel/ and recompile? (Assuming math.c is the rest of the code from the
> posting above)
>
>
>
Yes put it in the kernel directoy and edit makefile and then recompile
> 4th I am assuming you meant the include directory or is there an include file?
>
>
>
> > put math.h in the include file
> >
> >
>
>
>
the sentence would be :
"put math.h in the include directory" sorry
> 5thAnd if we are talking the directory are we talking in the the apt-get install
> legos created /usr/legos/include or the manually created
> /home/sebs/legOS/include?
>
>
>
That's a bit more complex ... when you compile a brickOS program, gcc
need to access to include directory that include the math.h
> 6th from your posting 3270
>
> Oh note : you need to compile with -lfloat your kernel if you want to
> include it into kernel
>
> just add -lfloat to $LIBS in the Makefile.kernel
>
> When does this come into it?
>
>
>
Before compile your kernel !! you need to say to say " I want the float
support" to gcc :)
> How I broke my debian legos kernel was that I tried to add math.c to Legos/kernel and math.h to the include directory, but when I recompiled and tried to run test.c it would return cannot find math.h. So thenI tried adding the math.h to the /usr version and added the -lfloat to the Makefile.kernel and it recognised math.h but not _sin and since then my program on my rcx give a one crazy reading 891 or something.
>
>
>
if you dont compile your kernl with the math.c gcc can't link sin
funtion to the correct adress !!
> I really appreciate your help I think i will have success with legnoppix amd
> VMware, but I really need to use trig functions for a project I am working on at
> the moment
>
>
>
I don't know if legnoppix will work with VMware cause there are no
option to install legnoppix
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Message is in Reply To:
 | | Re: Linux legos install help me please
|
| Wow thanks for the speedy response nanobapt. I am going to attempt to run legnoppix as a guestthrough VMware tonight. I will keep you posted on how that goes. Whati am really interested in is the math. Nano wrote (...) 1st Are you saying that (...) (23 years ago, 10-Dec-03, to lugnet.robotics.rcx.legos)
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