Something

ln -s libmythavcodec-0.18.1.so.0.18.1 libmythavcodec-0.18.1.so
ln: creating symbolic link `libmythavcodec-0.18.1.so' to `libmythavcodec-0.18.1.so.0.18.1': Operation not permitted
make[2]: [libmythavcodec-0.18.1.so.0.18.1] Error 1 (ignored)
ln -s libmythavcodec-0.18.1.so.0.18.1 libmythavcodec-0.18.1.so.0
ln: creating symbolic link `libmythavcodec-0.18.1.so.0' to `libmythavcodec-0.18.1.so.0.18.1': Operation not permitted
make[2]: [libmythavcodec-0.18.1.so.0.18.1] Error 1 (ignored)
ln -s libmythavcodec-0.18.1.so.0.18.1 libmythavcodec-0.18.1.so.0.18
ln: creating symbolic link `libmythavcodec-0.18.1.so.0.18' to `libmythavcodec-0.18.1.so.0.18.1': Operation not permitted
make[2]: [libmythavcodec-0.18.1.so.0.18.1] Error 1 (ignored)
make[2]: Leaving directory `/mnt/mythtv/mythtv/libs/libavcodec'
cd libavformat && qmake libavformat.pro -o Makefile
cd libavformat && make -f Makefile
make[2]: Entering directory `/mnt/mythtv/mythtv/libs/libavformat'