bug#43491: closed (Fakechroot execution engine can fail to find libraries)

[GNU bug Tracking System]

Your message dated Thu, 01 Oct 2020 12:53:58 +0200
with message-id <87mu16tdx5.fsf@gnu.org>
and subject line Re: bug#43491: Fakechroot execution engine can fail to find 
libraries
has caused the debbugs.gnu.org bug report #43491,
regarding Fakechroot execution engine can fail to find libraries
to be marked as done.

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-- 
43491: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43491
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> --- Begin Message ---
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> Subject: 
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> Fakechroot execution engine can fail to find libraries
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>
>
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> Date: 
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> Fri, 18 Sep 2020 15:28:18 +0200
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> User-agent: 
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> Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)
>
>
>
>
> Using the ‘fakechroot’ execution engine of ‘guix pack -RR’, I found a
> case where an executable’s NEEDED library is not found.
>
> --8<---------------cut here---------------start------------->8---
> $ guix describe
> Generacio 159   Sep 18 2020 08:55:27    (nuna)
>   guix 98b89f4
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: 98b89f432103b66efacee0bcba41a94148b8e870
> $ mkdir /tmp/fakechroot-test
> $ (cd /tmp/fakechroot-test; tar xf $(guix pack -RR openmpi -S /bin=bin -v0))
> $ unshare -m -U -r -f sh -c 'mount -t tmpfs none /gnu; echo /gnu/*; 
> GUIX_EXECUTION_ENGINE=fakechroot /tmp/fakechroot-test/bin/orterun'
> /gnu/*
> /tmp/fakechroot-test/gnu/store/rm1d9z3z3iwsv779vqlg7q5z7pdk5k12-openmpi-4.0.5/bin//orterun:
>  error while loading shared libraries: libevent_core-2.1.so.7: cannot open 
> shared object file: No such file or directory
> --8<---------------cut here---------------end--------------->8---
>
> That library is in the RUNPATH of the original executable though:
>
> --8<---------------cut here---------------start------------->8---
> $ objdump -x $(guix build openmpi)/bin/orterun | grep PATH
> objdump: Advertiment: 
> '/gnu/store/3ign6b3i5ambjgqqiyman4mqw0wljlvl-openmpi-4.0.5-debug' és un 
> directori
>   RUNPATH              
> /gnu/store/rm1d9z3z3iwsv779vqlg7q5z7pdk5k12-openmpi-4.0.5/lib:/gnu/store/xk22b03jb0c0b6vkadqbkr9d4556rwxh-hwloc-2.2.0-lib/lib:/gnu/store/i1smdd4r44c5wwi03g40dvc6wfnqgdwq-libpciaccess-0.16/lib:/gnu/store/c7wscymmk379v16invi8m68f6v5c8gsv-libevent-2.1.11/lib:/gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/lib:/gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib:/gnu/store/rykm237xkmq7rl1p0nwass01p090p88x-zlib-1.2.11/lib:/gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/../../..
> $ objdump -x $(guix build openmpi)/bin/orterun | grep NEED.*libevent
> objdump: Advertiment: 
> '/gnu/store/3ign6b3i5ambjgqqiyman4mqw0wljlvl-openmpi-4.0.5-debug' és un 
> directori
>   NEEDED               libevent_core-2.1.so.7
>   NEEDED               libevent_pthreads-2.1.so.7
> --8<---------------cut here---------------end--------------->8---
>
> Ludo’.
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#43491: Fakechroot execution engine can fail to find libraries
>
>
>
>
> Date: 
>
> Thu, 01 Oct 2020 12:53:58 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)
>
>
>
>
> Hi,
>
> Ludovic Courtès <ludovic.courtes@inria.fr> skribis:
>
> > The patch below fixes the issue for this particular example by simply
> > passing the whole RUNPATH of the wrapped executable as ‘--library-path’,
> > as was the case in v1 of the patch set¹.  (This assumes that the RUNPATH
> > of pack-audit.so is a subset of that of the program, which is usually
> > the case.)
>
> I pushed this as a workaround as commit
> 58abd5873985e0cd9a2926867bf697c5e7bc01f9.
>
> The ld.so issue is still open but there seems to be consensus that it’s
> a bug: <https://sourceware.org/bugzilla/show_bug.cgi?id=26634>.
>
> Closing!
>
> Ludo’.
>
>
> --- End Message ---