[U-Boot] [PATCH v4] Switch from archive libraries to partial linking

Mike Frysinger vapier at gentoo.org
Mon Nov 15 13:39:56 CET 2010


On Monday, November 15, 2010 07:13:03 Sebastien Carlier wrote:
> On 2010-11-15 11:54:07, Wolfgang Denk wrote:
> > I notice that the patch affects the size of the resulting U-Boot
> > images.
> > 
> > For example:
> > 
> > Configuring for MiniFAP - Board: TQM5200, Options: MINIFAP
> > 
> >    text    data     bss     dec     hex filename
> >  
> >  358144   35208  303248  696600   aa118 ./u-boot	before
> >  361340   35824  303332  700496   ab050 ./u-boot	after
> > 
> > -------------------------------
> > 
> > 		Delta:   +3896 Bytes
> > 
> > For other boards it's only a few hundred bytes, but why do we see
> > such big increase here?
> 
> In this case, these libraries contribute 3260 bytes in unused
> definitions:
> 
> In each case, a whole object file contains exactly the unused
> definitions, and could be excluded in the respective Makefile.

or just use -ffunction-sections/-fdata-sections/-Wl,--gc-sections and dont 
worry about it.  which is what we do for the Blackfin port.
-mike
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