Dear all, I have to add an output section in the final binary called "EXTSec". Therefore, I modified the makefile to point to a linkerscript.lds. Then I copied the original likerscript.x contents, which is located in ./bsp folder, and pasted it into my linkerscript.lds. After that, I added the following output section .EXTsec : { ./obj/CRT1.o } > SDRAM As a result, I got the following error ./obj/CRT1.o: In function `Task_CRT1': multiple definition of `Task_CRT1' obj/CRT1.o CRT1.c:19: first defined here collect2: ld returned 1 exit status make: ***[App.elf] Error 1 I need to put all input sections in that object file at the same output section contiguously.

Have any one worked with linker script for NIOS II?

At a guess you've requested a single .o file be placed into two separate sections - so all its symbols are replicated.

According to GCC documentation all explicit assignment overwrite implicit assignment. I really need to resolve this issue. I need to dump all input sections in that file into one output section, and I don't care about the rest files.

I need to understand, what sections have different VMA and LMA and why. How the start-up code loads stuff to VMA. I program my FPGA using NIOS II SBTE (software building tools for eclipse). Is this means that it will program it right into RAM (VMA) without loading any thing from Flash memory? Any info in this matter will be appreciated.

:o I solved the problem by providing exactly the same path to the file that is used by the makefile to invoke the linker. It appeared that any modification in the path the linker considers it as a new object file. Thus, multiple definitions, of the global symbols in that file, error occurred in my case.

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Altera_Forum

Honored Contributor

14 years ago

Custom Linker Script

Dear all,

I have to add an output section in the final binary called "EXTSec". Therefore, I modified the makefile to point to a linkerscript.lds. Then I copied the original likerscript.x contents, which is located in ./bsp folder, and pasted it into my linkerscript.lds. After that, I added the following output section

.EXTsec :

{

./obj/CRT1.o

} > SDRAM

As a result, I got the following error

./obj/CRT1.o: In function `Task_CRT1':

multiple definition of `Task_CRT1'

obj/CRT1.o CRT1.c:19: first defined here

collect2: ld returned 1 exit status

make: ***[App.elf] Error 1

I need to put all input sections in that object file at the same output section contiguously.

12 Replies

Altera_Forum
Honored Contributor
13 years ago
I'd check the symbol tables of the vmm.o and utils.o - I think you'll find that they both have definitions for the symbols (possibly where they are used).
Altera_Forum
Honored Contributor
12 years ago
--- Quote Start ---
You have to make sure that the linker will not read the content of the same object file twice. For example, you cannot direct the linker through the linker script to put some content of an object file in certain addresses while that object file is part of a library that is passed to the linker.
--- Quote End ---

Can you please inform me how to do this? Using eclipse here and I'm at my witts end with it!! Same error and feel like I've tried everything! Thanks

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Custom Linker Script

12 Replies

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