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Re: bug#48941: [powerpc64le-linux] libfaketime CLOCK_MONOTONIC test hang

From: Thiago Jung Bauermann
Subject: Re: bug#48941: [powerpc64le-linux] libfaketime CLOCK_MONOTONIC test hangs
Date: Thu, 22 Jul 2021 15:35:36 -0300


Em quarta-feira, 21 de julho de 2021, às 11:31:25 -03, Kaelyn escreveu:
> Hi,
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Wednesday, July 21st, 2021 at 1:08 AM, Chris Marusich 
<> wrote:
> > Now run it:
> > 
> > --8<---------------cut here---------------start------------->8---
> > 
> > (gdb) run
> > 
> > Starting program:
> > /tmp/guix-build-libfaketime-0.9.9.drv-0/source/test/timetest
> > 
> > /bin/sh: /lib/powerpc64le-linux-gnu/ version `GLIBC_2.33' not
> > found (required by ../src/ /bin/sh:
> > /lib/powerpc64le-linux-gnu/ version` GLIBC_2.32' not found
> > (required by
> > /gnu/store/kmblbljiygayhlc5gb02an9imhy90ws9-glibc-2.33/lib/libpthread.
> > so.0)
> Are you using Guix on a foreign distro? This line looks like your
> distro's normal was being used and it was from glibc-2.31 or
> older.

GDB uses the shell to launch the debugged program. That is probably where
‘/bin/sh’ is entering the picture here. I don’t know whether that has any 
relation to your foreign distro’s libc being used.

The output of `help run` in GDB mentions that the shell is specified by the 
‘$SHELL’ environment variable. Perhaps you have that set?

One way to see if this is the problem is to use the GDB command
`set startup-with-shell off` to make it launch the debugged program without 
the shell.

> The x86-64 systems I have that run pure Guix don't have any
> /lib*/ directories. You might try running gdb with
> LD_LIBRARY_PATH=/gnu/store/kmblbljiygayhlc5gb02an9imhy90ws9-glibc-2.33/l
> ib to have the Guix picked up before the other one. HTH

Another alternative worth trying is the ‘--container’ option to ‘guix 
environment’, to completely isolate GDB from the foreign distro. You might 
want to add the coreutils package to the ‘--ad-hoc’ list so that you can 
get amenities such as an ls command. :-)


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