[90899] trunk/dports/multimedia/ffmpeg-devel

[Jeremy Huddleston]

On Mar 26, 2012, at 12:34 AM, Andrea D'Amore <and.damore at macports.org> wrote:

> On Mon, Mar 26, 2012 at 09:26, Ryan Schmidt <ryandesign at macports.org> wrote:
>> llvm-gcc-4.2 is the default compiler on Xcode 4.0 and 4.1. ffmpeg apparently cannot be compiled with it.
>> Therefore the port used to drop back to gcc-4.2. Jeremy changed this to prefer clang, which is generally
>> the preferred compiler to use on Xcode 4+ these days.
> 
> I digged into this because ffmpeg-devel (specifically its lavf
> encoder) built with clang has issues remuxing aac files, while
> building with apple-gcc-4.2 makes the encoding go through.
> I noticed this when my convert script stopped working, switching back
> to fmpeg-devel @20111104_2 fixed the issue. Now I'm running latest
> port built configure.compiler=apple-gcc-4.2 and it works fine as well.
> This is reproducible.

Can you provide a test case that we can add to the ffmpeg validation suite used by fate?  See rsync://fate.ffmpeg.org/fate-suite

Currently, fate shows all versions of clang in my matrix as good, gcc-4.2 as good, and llvm-gcc as bad.  Note that this is only testing 32bit as my SL box is not 64bit.

Can you please try building ffmpeg-devel using macport's clang-3.1?  With trunk base, set configure.compiler to macports-clang-3.0