Try again with QEMU 1.7 and recent gcc. There has been a known gcc issue triggered by one of the QEMU source files that requires a lot of memory. A workaround

Try again with QEMU 1.7 and recent gcc. There has been a known gcc issue triggered by one of the QEMU source files that requires a lot of memory. A workaround went into QEMU a while back using the gcc -fno-gcse flag for that particular source file.