Subject:
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Re: GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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Newsgroups:
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lugnet.robotics.nxt.nxthacking
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Date:
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Wed, 14 Mar 2007 21:55:05 GMT
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Viewed:
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16889 times
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...
>
> Have you experimented at all with the compiler optimisation flags?
I have not done that. Well, just a little bit:-). The best one (not
surprisingly) is the "-Os" optimization, which does this
"Optimize for size. -Os enables all -O2 optimizations that do not typically
increase code size."
> I don't know
> if all of them are supported for the ARM architecture, and some options cause
> problems on other architectures, but there's a bit of a list here:
> http://developer.apple.com/documentation/DeveloperTools/gcc-3.3/gcc/Optimize-Options.html • Thanks for the link.
>
> Also, removing debug information (-s) will reduce the size, but you may not want
> to do that while hacking.
I tried that but I think the debug info is used on the host side? It did not
seem to decrease the firmware image.
Thanks for the ideas.
Best,
Rasmus
>
> ROSCO
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