Re: stripping symbols and dead-code
Re: stripping symbols and dead-code
- Subject: Re: stripping symbols and dead-code
- From: "Frode" <email@hidden>
- Date: Thu, 17 Nov 2005 23:26:27 +0100
- Importance: Normal
On Nov 17, 2005, at 7:14 AM, Frode wrote:
>> I'm using XCode 2.2, gcc-4.0.0, ld version "cctools-590.obj~12".
>Xcode 2.2 shipped with gcc 4.0.1, so I hope that's a typo above.
I hope that's a typo because my gcc with "gcc --version" prints
powerpc-apple-darwin8-gcc-4.0.0 (GCC) 4.0.0 (Apple Computer, inc, build
5026)
And Xcode:
Version 2.2 (Seed)
Xcode IDE: 622.0
Xcode Core: 622.0
ToolSupport: 610.0
>> 1. Is there any option to activate symbol-stripping besides dead-code
>> stripping in the build settings, besides adding -Wl,-s to "Other
Linker
>> Flags"?
>
>Deployment Postprocessing will do this for you. There may be other
>options which do it, too.
That did the trick! :-)
[I noticed that "Deployment Postprocessing" still gives larger files
than "-Wl,-s", compare the sizes
strip (-Wl,-s)
1,518,745 bytes
strip ("Deployment Postprocessing")
1,635,689 bytes]
That's it, about 100 kB larger. Am I stripping to much with -Wl,-s or
can I safely use it in a deployment product instead of "Deployment
Postprocessing"?
>> The most efficient in my case seems to be the symbol strip. There are
>> about 80 kB extra if I both dead-strip and symbol-strip.
>
>Symbol stripping with strip is different from symbol stripping at link
>time. In particular, the linker has additional information about the
>layout of your executable that strip doesn't have, so it can strip
>slightly more.
I was just curious how this could be, since I supposed dead-code
elimination + stripping would produce even lesser code than just DCE.
But appereantly this is not the case?
Thanks for the help!
/Roggan
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