[FFmpeg-devel] Compiling with Sun cc
Roman V. Shaposhnik
Mon Oct 6 06:31:56 CEST 2008
On Fri, 2008-10-03 at 09:24 +0200, Reimar D?ffinger wrote:
> On Thu, Oct 02, 2008 at 08:10:22PM -0700, Roman V. Shaposhnik wrote:
> > On Thu, 2008-10-02 at 11:09 +0200, Diego 'Flameeyes' Petten? wrote:
> > > > "libavcodec/mpegvideo_enc.c", line 3288: warning: can not set non-default
> > > > alignment for automatic variable
> > >
> > > This basically means it does not support alignment for stack variable,
> > > which is probably a very bad thing, this is actually where I stopped and
> > > waited before continuing...
> > Well, it is very controversial thing, for one. The trouble is, that even
> > gcc can not really guarantee it, since initial stack assumptions are not
> > controlled by the compiler, but rather by the combination of an OS
> > and how linking was done.
> How about 64 bit compilation? Does it work there?
Well, section 3.2.2 of the amd64 ABI guarantees the stack alignment
of 16 bytes.
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