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Message-ID: <718D38CAB6E0D011B2C90060970C28A57E1AB7@exchangeserver.pixelpower.com>
From: David Korn <dkorn AT pixelpower DOT com>
To: "'Mohammad Saleem'" <mosa AT enea DOT se>, crossgcc AT sources DOT redhat DOT com,
   cygwin AT cygwin DOT com
Subject: RE: linking application with a library
Date: Mon, 19 Nov 2001 10:46:25 -0000
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>-----Original Message-----
>From: Mohammad Saleem [mailto:mosa AT enea DOT se]
>Sent: 18 November 2001 10:36


>I have a lib mylib.a (20 kb) which I want to link with my application.
>My application gets 20 kb bigger as soon as I link it with mylib.a 
>without any function being called from mylib.a.
>It seems to me that I have built mylib.a so that the whole lib 
>is linked 
>during linking process even if no one method is being called.
>Now my question is which flag should I use to build mylib.a so 
>that only 
>those functions are linked which are being called.
>If no function is called then linking mylib.a shouldn't affect 
>the size 
>of my application.

  Alas, the linker is fairly dumb, and can only include or exclude parts
of a lib file on the basis of the section name (.text, .data or .bss).

  Fortunately the compiler is fairly smart, and has an option
-ffunction-sections that puts every function in a different section.  This
should supposedly do the job you wish.

      DaveK
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