RE: [avr-gcc-list] code size: .text vs .data

[Theodore A. Roth]

On Fri, 11 Jun 2004, Pat Deegan wrote:

> Hello,
>
> On Fri, 2004-06-11 at 13:32, Dave Hylands wrote:
> > You need to modify your linker script. This is what defines how much
> > space goes where.
> >
> > What's the exact command that you used to link your program?
>
> Well, I'm using the generic Makefile we put together to build the
> program (see http://electrons.psychogenic.com/avr/linux/makefile.php).
>
> Using this, the final step is simply:
>
>   avr-gcc -Wl,-Map,a.out.map -lm  -o a.out a.o b.o c.o ...
>
> I am uncertain as to what's going on behind the scenes.

If you aren't passing the -mmcu=atmega32 option to the avr-gcc link
command, it will default to using the <= 8K linker script.

>
>
> Where can I find out how to tweak the linking or do you have any
> suggestions?

If you give avr-gcc all the right options, you shouldn't need to fiddle
with the linker scripts unless you are doing something very custom.

I've never had to tweak a linker script for any of my projects, so I
can't tell you how to do that or where to get the information. :-(

---
Ted Roth
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