I think this has been fixed here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=4b25a50674de41e72f6b3003
** Changed in: qemu
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1748612
Title:
qemu-user option -strace -D <file> doesn't work
Status in QEMU:
Fix Released
Bug description:
I have been trying to access qemu -strace output from a script
The main problem was it was on stderr, the strace output was merged with my
program's stderr output.
Then I tried to use the -D option, to log the output to a file.
This didn't work even if the log file was created, but it was empty.
I have looked at the source code and found the print function was not
qemu_log with -strace but gemu_log (to be clear it was GEMU NOT QEMU)
I have then replaced all gemu_log by qemu_log removed declaration of gemu_log
and recompiled, it seems to works just fine right now.
removed declaration here and here:
https://github.com/qemu/qemu/blob/master/linux-user/main.c#L108
https://github.com/qemu/qemu/blob/master/linux-user/qemu.h#L203
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