gst-ffmpeg -error

libgstffmpeg_la-gstffmpegutils.lo
  CC     libgstffmpeg_la-gstffmpegenc.lo
  CC     libgstffmpeg_la-gstffmpegdec.lo
  CC     libgstffmpeg_la-gstffmpegcfg.lo
  CC     libgstffmpeg_la-gstffmpegdemux.lo
  CC     libgstffmpeg_la-gstffmpegmux.lo
  CC     libgstffmpeg_la-gstffmpegdeinterlace.lo
  CC     libgstffmpeg_la-gstffmpegaudioresample.lo
  CCLD   libgstffmpeg.la

*** Warning: Linking the shared library libgstffmpeg.la against the
*** static library ../../gst-libs/ext/libav/libavformat/libavformat.a is not portable!

*** Warning: Linking the shared library libgstffmpeg.la against the
*** static library ../../gst-libs/ext/libav/libavcodec/libavcodec.a is not portable!

*** Warning: Linking the shared library libgstffmpeg.la against the
*** static library ../../gst-libs/ext/libav/libavutil/libavutil.a is not portable!