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instruction: 0.629
runtime: 0.285
syscall: 0.087
qemu-user: $0 incorrectly always reports absolute path
We just ran into an issue with the Perl package on Debian/m68k when being built with qemu-user [1].
The problem can be boiled down to qemu-user always reporting absolute paths for the shell variable $0 no matter on how the command was invoked.
A simple reproducer is this:
On normal system (no emulation):
root@nofan:~> sh -c 'echo $0'
sh
root@nofan:~>
On qemu-user:
(sid-m68k-sbuild)root@nofan:/# sh -c 'echo $0'
/bin/sh
(sid-m68k-sbuild)root@nofan:/#
> [1] https://lists.debian.org/debian-68k/2019/07/msg00007.html
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