I use the binpkg feature to quickly update an Athlon64 system with packages compiled on an Athlon64 X2 system. march=athlon64 on both systems, I avoided using the new gcc 4.3.2 march=native option to maintain compatibility. The Athlon64 apparently runs fine, but yesterday I discovered that mplayer aborts with 'illegal instruction', spitting out a warning that possibly the package was compiled for a different machine, which is true!
Anybody has ideas why it is happening? On last update I switched from gcc-4.2.1 to gcc-4.3.2, but since the system seemed stable and running fine till now I did not do the recommended emerge -e world. Maybe some mplayer dependency is still referencing the old gcc libraries? raffaele
