Timo P wrote:
> Hello!
>
> At the moment I am earning my first experience in programming an
> AT91SAM7 chip. The project is createt by an external engineer who is not
> working for us anymore.
>
> Now I tried to modify the project. Programming in C ist not my Problem.
> I added the variable char s[12];

Is this the only extension done? Does the unmodified code from the 
"external engineer" build without any modification?

Create a minimal example (sources, makefile, linker-script) so the issue 
can be reproduced. At least show the output of the build-process of the 
unmodified project sources.

>to my project. And got the error
> message:
>
> /home/Peraglie/CodeSourcery/gcc/bin/../lib/gcc/arm-none-eabi/4.4.1/../.. 
/../../arm-none-eabi/bin/ld:
> error: no memory region specified for loadable section `.ARM.exidx'
> collect2: ld returned 1 exit status
> make: *** [logicdemo-sniffer.elf] Fehler 1

hmm, this might be related to exceptions. Do you use C++?

>
> Questions:
> - Do I have to prepare the usage of memory in any kind?
> - if yes, in which kind? I`ve heard that there is a file atmel-rom.ld

To make the linker happy you can try to add the following lines to your 
linker-script:

1

/* .ARM.exidx is sorted, so has to go in its own output section.  */

2

__exidx_start = .;

3

.ARM.exidx :

4

{

5

  *(.ARM.exidx* .gnu.linkonce.armexidx.*)

6

} >FLASH

7

__exidx_end = .;

The lines should follow the lines for the output-section where the .text 
input-sections are located.

> - What have I to do in my makefile in case of using any variables?

A minimal example is needed. Difficult to see what needs to be done 
without knowing what is already there.