root@USR8054:/home/sphynx/software/qemu-0.8.0# echo $CC
/usr/bin/gcc-3.4
root@USR8054:/home/sphynx/software/qemu-0.8.0# ./configure --prefix=/opt/qemu
ERROR: "gcc" looks like gcc 4.x
QEMU is known to have problems when compiled with gcc 4.x
It is recommended that you use gcc 3.x to build QEMU