Re: [avr-gcc-list] big .hex file - explanation please?

[E. Weddington]

Kelly McDonald wrote:

> Hello list,
>
> I made a mistake in the code below, which generated a rather large (16k)
> hex file. I fixed the problem (x++ instead of a++) and the size of the
> hex file went back to about 1.6k which is what I expected.
>
> I"m linking in lcd.o and -lm and it's an atmega8.
>
> I'm guessing that much of the libm.a stuff didn't get weeded out in the
> link, but I'm at a loss for why. Any good explanations?
>  
Hmm. What optimization setting do you have? (It's the -O flag to gcc)

You could always take a look at the resulting assembly. If you're using 
WinAVR take a look at the listing file (.lst), it contains mixed C and 
the assembly output.

Eric