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 Robotics / RCX / legOS / 2131
2130  |  2132
Subject: 
Re: Still having problems with helloworld.c
Newsgroups: 
lugnet.robotics.rcx.legos
Date: 
Thu, 15 Nov 2001 01:36:33 GMT
Viewed: 
1618 times
  
Thanks John! I will see if that works.I had almost given up and Mike was
helping me set up the whole thing again alongwith the USB patch.
Regards,
Rajendra


From: "John Madsen" <john@illura.NOSPAM.com>
Reply-To: lugnet.robotics.rcx.legos@lugnet.com
To: lugnet.robotics.rcx.legos@lugnet.com
Subject: Re: Still having problems with helloworld.c
Date: Thu, 15 Nov 2001 00:31:18 GMT

Hi,

I had the same problem you did and traced it back to a faulty line in
loader.c (which contains makelx's main()).  In revision 1.3 and earlier of
that file you can find the following toward the end of the file:

if(argc-optind<3 || lx.text_size==0) {
    fprintf(stderr,"usage: %s file.ds1 file.ds2 file.lx\n"
    ...

lx has not been initialized, so it contains garbage which is not equal to
0.
I attempted to compile 0.2.5 (which does not have this problem), but got
numerous errors (I'll work on that later).  The solution I came up with is
simply to edit makelx itself.  If you change the byte at 0xb3a to 0xeb
eveything should work fine.

John

In lugnet.robotics.rcx.legos, Rajendra Kumar Penugonda writes:
Hi! I tried changing the path for KERNEL in makefile from Demos directory
and giving the path for legOS there.Now I get a different message when I • do
'make'.It says 'No rule to make target'?!Now is there any way I could • solve
this.If I download the tar file for legOS then do I get new files for • egcs
and binutils too??
Regards,Rajendra


From: "Michael Obenland" <obenland@t-online.de>
Reply-To: lugnet.robotics.rcx.legos@lugnet.com
To: lugnet.robotics.rcx.legos@lugnet.com
Subject: Re: Unable to compile helloworld.c
Date: Mon, 5 Nov 2001 23:13:09 GMT

Addendum:

It seems bad to put legOS under /usr/lib. Please get a fresh legOS.tar.z
from
legOS.sourceforge.net and install it in your user home directory. (for • me,
that means in /home/obi. So legOS home is /home/obi/legOS at my linux
system)
You will probably get trouble with the file access rights if you install
under /usr/lib. Or you have to be root to do your work which is very • very
bad. Try a rm -r * in / as root and you know what I mean ;)

Then, try to make the kernel and the demos as told in the readme of • legOS.
If
this works (and it must work!) you can try to make a program in your
projects
dir.

Bye

Mike


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