[Ffmpeg-devel] How to reduce the ffmpeg avcodec.dll, avformat.dllsize

[Måns Rullgård]

Michael Niedermayer <michaelni at gmx.at> writes:

> Hi
>
> On Mon, Mar 20, 2006 at 09:44:43PM +0000, M?ns Rullg?rd wrote:
>> Michael Niedermayer <michaelni at gmx.at> writes:
>> 
>> > Hi
>> >
>> > On Mon, Mar 20, 2006 at 09:44:44AM -0500, Rich Felker wrote:
>> > [...]
>> >> If code is not being removed by the compiler with some
>> >> encoders/decoders disabled, it's probably because it's accidentally
>> >> being used, due to function pointers in the data segment, etc.
>> >
>> > no, IIRC gcc until very recently (4.0 or so) did NOT support removing
>> > unused static functions, and iam not even sure if latest gcc does it
>> > by default
>> 
>> Unused static functions have been removed in the compilation phase for
>> a long time.  You probably mean extern functions.  They can be
>> referenced in much more subtle ways.
>
> nope, see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11278

The example there is a function that could be removed completely
because it does nothing.  Unreferenced static functions are AFAIK
always removed properly.

-- 
M?ns Rullg?rd
mru at inprovide.com