make.conf - had to demote -O3 down to -O2 for compile to finish, althought it seems the makefile overrides it to -O4 anyway. weird.
which gcc version?
Erm, in theory the CFLAGS you set in make.conf dont matter for mplayer, as it zeros them at ./configure and make time. The is due to the mplayer guys not wanting to give support, and the already optimized nature of mplayer compile flags. This is on my box at least. Check that you did not alter the mplayer ebuild.
Hiya, got it going yet ?