how to get "the big picture" with nm, objdump, size for object size?

[Mike Frysinger]

On Friday, September 24, 2010 16:58:03 Ilya Murav'jov wrote:
>  I am trying to decrease the object size for my C++ code with nm, size
> and objdump. The 'size' command gives me
> $ size my_obj.o
>    text    data     bss     dec     hex filename
>  143576      72     208  143856   231f0 my_obj.o
> just 143kb which is much less than real file size (which is 1,6Mb).
> 
>  So, how can I get what sections occupy so many space? I am sure they
> are debugging symbols and something else; so, how can I sum up numbers
> from output of the tools to get something like 1,6Mb? Googling didn't help.

use `readelf -S` and `readelf -s` to view section & symbol info
-mike
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