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Re: Problem with loader call using arm-elf-gcc


On Thu, 05 Jun 2008 11:27:31 +0200, Andrew Lunn <andrew@lunn.ch> wrote:

On Thu, Jun 05, 2008 at 11:19:30AM +0200, Robert Brusa wrote:
Hi
I am using the arm-elf gnutools that come with ecos. To be precise: I
would like to use it, because there is an error message I were I am
stuck.

I am running a Makefile from within Eclipse (3.3.2), the arm-elf-gcc is
3.2.1. The program I want to compile is a simple Hello World exercise. It
is - together with its Makefile - downloaded from ATMELs web site. I had
this same example on a windows XP PC using yagartos toolchain. It worked.
Now on my debian etch PC I get the following error message:


arm-elf-gcc -g  -nostartfiles -Wl,--gc-sections
-T"../at91lib/boards/at91sam7x-ek/at91sam7x256/flash.lds" -o
bin/My5-at91sam7x256-flash.elf obj/board_cstartup.o obj/main.o
obj/stdio.o obj/dbgu.o obj/pio.o obj/board_memories.o
obj/board_lowlevel.o

Run the command with -v. You will then get to see all the flags passed to the linker.


/home/rwb/ecos/gnutools/arm-elf/bin/../lib/gcc-lib/arm-elf/3.2.1/../../../../arm-elf/bin/ld:
cannot find -lg

It is probably looking for a library called libg.a which does not exist. You don't appear to be passing -lg, but maybe it is in your linker script, flash.lds?

Andrew

Hi Andrew and all out there
Thanks, the -v option helped several steps further:
a) The loader has indeed -lgcc -lc -lc options set (-lgcc even twice?) - and they are needed, the yagarto-version uses them as well.
b) The gnutool from ecos do not include libg.a nor libc.a, but libgcc.a is there (many of them!)
c) The arm-elf-gcc provided by ecos is built using a rather old gcc version 3.2.1 (yagarto uses 4.2.2)


I think I need a more recent version of the arm-elf-gnutools - including libraries. Does anyone know were one can get it? Linux-version!
Thanks and best regards
Robert



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