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Re: RFC: Support linker --compress-debug-sections


On Thu, Jul 22, 2010 at 6:23 AM, Ian Lance Taylor <iant@google.com> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
>> linker now supports compressed debug sections. I am
>> investigating --compress-debug-sections, On one hand,
>> linker applies relocations when writing to disk after file layout
>> is set. ?On the other hand, compression, which has to be
>> done after all relocations are applied, will change file layout.
>>
>> I don't want to make massive changes to linker. I am planning
>> to put a mini objcopy in linker, which will compress debug
>> sections after the output has been written to disk. ?Any
>> comments?
>
> You're proposing to generate the full sized binary on disk, and then
> objcopy it to compress the debug sections? ?Is that really a win? ?Why
> not just add the option to objcopy and be done with it?
>

I have implemented "objcopy --compress-debug-sections".
"ld --compress-debug-sections" is a little bit faster since it
is the minimized "objcopy --compress-debug-sections".
Also I can turn on "ld --compress-debug-sections"  by default.


-- 
H.J.


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