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Now that "make sizes" is in, the faq should mention it...

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Rob Landley 2005-09-05 10:25:51 +00:00
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16
docs/busybox.net/FAQ.html
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@ -258,18 +258,10 @@ have additions to this FAQ document, we would love to add them,
savings add up).
</p>
<p>
To examine a busybox binary with an eye to saving bytes, build an
optimized debug version and run the "nm" command against it, like so:
</p>
<p>
make clean && make STRIPCMD=/bin/true && nm --size-sort busybox
</p>
<p>
This gives a list of symbols and the amount of space allocated for
each one, sorted by size. (Note: do not enable CONFIG_DEBUG for this,
as that disables compiler optimization which is great for running gdb
but misleading when trying to figure out how much space each component
is really using under normal circumstances.)
The busybox Makefile can generate a report of how much space is actually
being used by each function and variable. Run "<b>make sizes</b>" (preferably
with CONFIG_DEBUG off) to get a list of symbols and the amount of
space allocated for each one, sorted by size.
</p>
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