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Re: [avr-gcc-list] Linking and unused functions.
From: |
Theodore A. Roth |
Subject: |
Re: [avr-gcc-list] Linking and unused functions. |
Date: |
Wed, 3 Mar 2004 15:56:57 -0800 (PST) |
On Wed, 3 Mar 2004, Alan Kilian wrote:
>
> I have been trying to use the avrlib from Pascal Stang
> <http://hubbard.engr.scu.edu/embedded/avr/avrlib/>
> on an AT90S2313 and at first, I thought the code was huge,
> but on further analysis, it appears that every function in
> a .o file gets linked even if it is never used.
>
> I edited lcd.c and timer.c to remove unused functions and the
> size of the hex file dropped dramatically. It's now about 10%
> of what it was before.
>
> I am not used to this behavior. I'm used to having only the
> functions actually called getting linked into the hex file.
>
> Is there something I'm doing incorrectly?
>
> -Alan
>
>
http://www.avr1.org/pipermail/avr-gcc-list/2002-October/002919.html
This is exactly what avr-libc does.
This should probably be added to the FAQ.
Ted Roth
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