*** Warning: Linking the executable channelmixtest against the loadable module
*** libgstaudioconvert.so is not portable!

*** Warning: Linking the executable channelmixtest against the loadable module
*** libgstaudio.so is not portable!
i686-pc-linux-gnu-gcc -O2 -mcpu=i686 -pipe -Wl,-O1 -Wl,--as-needed -o .libs/channelmixtest -Wl,--export-dynamic -pthread channelmixtest-channelmixtest.o  ./.libs/libgstaudioconvert.so ../../gst-libs/gst/audio/.libs/libgstaudio.so /usr/lib/libgstreamer-0.8.so /usr/lib/libpopt.so /usr/lib/libgobject-2.0.so /usr/lib/libgmodule-2.0.so /usr/lib/libgthread-2.0.so -lpthread -lrt /usr/lib/libxml2.so -ldl -lz -lm /usr/lib/libglib-2.0.so -Wl,--rpath -Wl,/usr/lib/gstreamer-0.8
./.libs/libgstaudioconvert.so: undefined reference to `gst_audio_set_channel_positions'
./.libs/libgstaudioconvert.so: undefined reference to `gst_audio_fixate_channel_positions'
./.libs/libgstaudioconvert.so: undefined reference to `gst_audio_get_channel_positions'
./.libs/libgstaudioconvert.so: undefined reference to `gst_audio_set_structure_channel_positions_list'
./.libs/libgstaudioconvert.so: undefined reference to `gst_audio_set_caps_channel_positions_list'
collect2: ld returned 1 exit status
make[3]: *** [channelmixtest] Error 1
make[3]: Leaving directory `/var/tmp/portage/media-libs/gst-plugins-0.8.12/work/gst-plugins-0.8.12/gst/audioconvert'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/var/tmp/portage/media-libs/gst-plugins-0.8.12/work/gst-plugins-0.8.12/gst'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/media-libs/gst-plugins-0.8.12/work/gst-plugins-0.8.12'
make: *** [all] Error 2

!!! ERROR: media-libs/gst-plugins-0.8.12 failed.
Call stack:
  ebuild.sh, line 1621:   Called dyn_compile
  ebuild.sh, line 973:   Called qa_call 'src_compile'
  ebuild.sh, line 44:   Called src_compile
  gst-plugins-0.8.12.ebuild, line 54:   Called die

!!! (no error message)
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/media-libs/gst-plugins-0.8.12/temp/build.log'.