head -1 and tail -1 no longer work with the latest coreutils with glibc-2.3.2-r2 or above, but MPlayer depends on these. MPlayer works without them, however if they fail MPlayer's MMX/3DNow/SSE support will not be built in. The head/tail/uniq -1 deprecation only comes about with glibc-2.3.2-r2 or later as it updates _POSIX2_VERSION in /usr/include/unistd.h - however, as this is bound to change sooner or later for stable Gentoo systems, it's something that needs to be addressed. The fix is to change everything containing head -1 or tail -1 to head -n 1 or tail -n 1, respectively.
this is already fixed ...
