[Ffmpeg-devel] [PATCH] Cygwin vhook, always static avformat

[Diego Biurrun]

This thread was dormant for a short while, let's revive it..

On Sun, Jul 16, 2006 at 02:00:20PM +0100, M?ns Rullg?rd wrote:
> V?ctor Paesa <wzrlpy at arsystel.com> writes:
> 
> > The next attempt on the vhook, shared lib Cygwin patches, attached.
> >
> > --- ffmpeg-5754-old/configure	2006-07-15 23:00:24.468750000 +0200
> > +++ ffmpeg/configure	2006-07-16 00:09:57.265625000 +0200
> > @@ -587,7 +587,11 @@
> >  v4l2="no"
> >  audio_oss="yes"
> >  dv1394="no"
> > -vhook="no"
> > +VHOOKFLAGS="-shared"
> > +VHOOKLIBS='-Wl,--no-whole-archive \
> > +           -L../libavformat -lavformat$(BUILDSUF) \
> > +           -L../libavcodec  -lavcodec$(BUILDSUF)  \
> > +           -L../libavutil   -lavutil$(BUILDSUF) $(EXTRALIBS)'
> 
> Why is this needed on cygwin but not elsewhere?  I guess it has
> something to do with now dynamic symbols are resolved.  Wouldn't be
> just as well to always link the vhook libs against lav[cfu]?  Doing so
> would allow us to get rid of the -rdynamic stuff which is problematic
> anyway (as in syntax and semantics varying wildly between platforms).

Sounds like a good idea..

Diego