linux-kernel - Re: [PATCH 0/2] selftests/nolibc: small simplification of test development phase

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Date:   Mon, 23 Jan 2023 23:57:56 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Willy Tarreau <w@....eu>
Cc:     "Paul E. McKenney" <paulmck@...nel.org>,
        linux-kernel@...r.kernel.org, Shuah Khan <shuah@...nel.org>,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 0/2] selftests/nolibc: small simplification of test
 development phase

On Sat, Jan 21, 2023 at 10:34:55PM +0100, Willy Tarreau wrote:
> On Sat, Jan 21, 2023 at 12:00:38PM -0800, Paul E. McKenney wrote:
> > One dependency is of course qemu-x86_64, so in the meantime I will figure
> > out where I get that from.  ;-)
> 
> I build it from time to time from the sources, it's not that long and
> normally doesn't reserve me any surprises. But if you have it for other
> platforms it's likely that you have it for most platforms as well,
> including this one.

Willy,

Is there a way to make it work for the default qemu installation?
Or maybe it's a mandatory requirement to build qemu from the source?

I use the qemu that comes from Ubuntu apt. I have "qemu-system-x86_64",
but no "qemu-x86_64". So, something like this...

  $ which qemu-x86_64
  $ echo $?
  1

  $ which qemu-system-x86_64
  /usr/bin/qemu-system-x86_64

  $ time make run-user
    MKDIR   sysroot/x86/include
  make[1]: Entering directory '/home/ammarfaizi2/work/linux.work.cc/tools/include/nolibc'
  make[2]: Entering directory '/home/ammarfaizi2/work/linux.work.cc'
  make[2]: Leaving directory '/home/ammarfaizi2/work/linux.work.cc'
  make[2]: Entering directory '/home/ammarfaizi2/work/linux.work.cc'
    INSTALL /home/ammarfaizi2/work/linux.work.cc/tools/testing/selftests/nolibc/sysroot/sysroot/include
  make[2]: Leaving directory '/home/ammarfaizi2/work/linux.work.cc'
  make[1]: Leaving directory '/home/ammarfaizi2/work/linux.work.cc/tools/include/nolibc'
    CC      nolibc-test
  /bin/sh: 1: qemu-x86_64: not found
  0 test(s) passed.

  real    0m0.506s
  user    0m0.393s
  sys     0m0.086s

It would be great if we can avoid building qemu from the source. But if
not, let's go with that.

Thanks!

-- 
Ammar Faizi