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Date: Wed, 03 Sep 2014 03:20:00 -0000
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Subject: Re: removing unused functions during final link
From: Melvin Blades <melvin.blades@gmail.com>
To: Ian Lance Taylor <iant@google.com>
Cc: "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
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Using gcc instead of ld, I was able to get it to strip unused
 functions if all the functions in a file are not called.
 But I could not get it to strip  unused functions if they  are in the
 same source file as used functions .

 Is there a way to get it strip ALL the unused functions?

 Thanks for any hints, I'm running out of things to try

On Wed, Aug 27, 2014 at 2:22 PM, Ian Lance Taylor <iant@google.com> wrote:
> On Wed, Aug 27, 2014 at 2:02 PM, Melvin Blades <melvin.blades@gmail.com> wrote:
>>
>> What command line options can I use to get the linker to strip unused
>> functions from the final executable?
>
> Compile with -ffunction-sections -fdata-sections.
>
> Link with -Wl,--gc-sections.
>
> Ian