RE: Build a short executable

[David Korn <dkorn at pixelpower dot com>]

>-----Original Message-----
>From: Pierre Saucourt-Harmel (r54698) 

>I removed the -g option to generate the cross libraries 
>(libg.a and libgcc.a) but not for my small files. I used -o2 
>everywhere and I obtained an executable file of 132656 bytes ! 

  Did you try using the 'strip' command from binutils on the output ? You'd
be surprised how much difference it might make.  It will be the main reason
why your exe is so large.

>With the generated map, I noticed more than 20 objects files 
>coming from libg.a and libgcc.a were *fully* loaded in my executable. 

  Yes, but each of those files is very small; by and large, each one
contains
just one or two functions, for this very reason: so that only the minimum
that
needs to be linked in will be.  Looking at your list, it's got things like
malloc and free, open, close, read and write; I assume your program wants to
use these functions ?

       DaveK
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