Re: [xine-devel] ffmpeg syncing

[Michael R. <mr...@us...>]

Hi Mike,

> 	This one does not have to do with diffs to the ffmpeg tree
> necessarily, but I still wonder what it's for. Can anyone articulate
> why these files exist?
>
> libavcodec/armv4l/libavcodec_armv4l_dummy.c
> libavcodec/i386/libavcodec_mmx_dummy.c
> libavcodec/mlib/libavcodec_mlib_dummy.c
> libavcodec/ppc/libavcodec_ppc_dummy.c
>
> That each contain a single byte variable and are necessary for
> compilation.

src/libffmpeg/libavcodec/Makefile.am lists this:

libavcodec_la_LDFLAGS = \
	$(top_builddir)/src/libffmpeg/libavcodec/armv4l/libavcodec_armv4l.la \
	$(top_builddir)/src/libffmpeg/libavcodec/i386/libavcodec_mmx.la \
	$(top_builddir)/src/libffmpeg/libavcodec/mlib/libavcodec_mlib.la \
	$(top_builddir)/src/libffmpeg/libavcodec/ppc/libavcodec_ppc.la \
	-avoid-version -module

These individual libraries have to exist, otherwise the linking fails 
here. Therefore a dummy is needed for all the archs different from the 
one you are building for. If official ffmpeg has a different solution 
that does not need these dummies and looks clean, go ahead and change 
things. (Or tell us, how they do it and leave the details to some 
automagic expert.)

Michael

-- 
panic("floppy: Port bolixed.");
	2.2.16 /usr/src/linux/include/asm-sparc/floppy.h