I guess he is referring to --enable-trace-backend configure option. See docs/tracing.txt in the qemu source for more details (http://git.qemu.org/?p=qemu.git;a=blob;f=docs/tracing.txt)
I guess he is referring to --enable- trace-backend configure option. See docs/tracing.txt in the qemu source for more details (http:// git.qemu. org/?p= qemu.git; a=blob; f=docs/ tracing. txt)