[lug] A head scratcher for your weekend

[Matt Bidwell]

Shouldn't be, but it got me to thinking about Apparmor. So I disabled 
that in grub and rebooted. Unfortunately, still no progress. -Matt
On 05/19/2018 08:36 PM, stimits at comcast.net wrote:
> Maybe SElinux?
> ----- Original Message -----
> From: Matt Bidwell <mbidwell at gmail.com>
> To: lug at lug.boulder.co.us
> Sent: Sat, 19 May 2018 22:26:11 -0000 (UTC)
> Subject: Re: [lug] A head scratcher for your weekend
> Unfortunatly they both appear to be 64bit and there only is one version
> of libQt5Core.
> # file /usr/bin/mythbackend
> /usr/bin/mythbackend: ELF 64-bit LSB pie executable x86-64, version 1
> (GNU/Linux), dynamically linked, interpreter
> /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0,
> BuildID[sha1]=293e8e4f8ef60e3a1d9a0133b50070cc837d008c, stripped
> # file /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.10.1
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.10.1: ELF 64-bit LSB shared
> object x86-64, version 1 (GNU/Linux), dynamically linked, interpreter
> /lib64/ld-linux-x86-64.so.2,
> BuildID[sha1]=29089e33a2458624bd5d495a5698237fedaa2a91, for GNU/Linux
> 3.17.0, stripped
> 
> LD_LIBRARY_PATH was low hanging fruit that I already checked out leaving...
> RPATH and RUNPATH which I'm less sure how to hunt down.
> #readelf --dynamic /usr/bin/mythbackend | grep PATH
> returns nothing but web examples show me that I should get both a hit on
> RPATH and RUNPATH.
> Thanks for the response.
> On 05/19/2018 06:29 AM, Davide Del Vento wrote:
>  > Often a 32 vs 64 bit causes this problem. Try
>  >
>  > file /usr/bin/mythbackend
>  >
>  > file /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.10.1
>  >
>  > and make sure they are both 64 bit (assuming that the directory name
>  > for libQt5Core.so is correct).
>  >
>  > Also check LD_LIBRARY_PATH, RPATH, RUNPATH and /etc/ld.so.conf and
>  > make sure there isn't another location with higher priority than
>  > /usr/lib/x86_64-linux-gnu/ containing a file called libQt5Core.so.5
>  > (which again, could have 32/64 bit mismatch or be a broken link or
>  > something).
>  >
>  > HTH
>  > Davide
>  >
>  > On Sat, May 19, 2018 at 5:28 AM, Matt Bidwell <mbidwell at gmail.com> wrote:
>  >> Library is installed, program can find other libraries in that 
> directory.
>  >> Reinstalling or downgrading either the package or the library didn't fix
>  >> it.... What could have happened to my system?
>  >> # ls -alh /usr/lib/x86_64-linux-gnu/libQt5Core.so.5*
>  >> lrwxrwxrwx 1 root root 20 May 12 07:03
>  >> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 -> libQt5Core.so.5.10.1
>  >> lrwxrwxrwx 1 root root 20 May 12 07:03
>  >> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.10 -> libQt5Core.so.5.10.1
>  >> -rw-r--r-- 1 root root 5.0M May 12 07:03
>  >> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.10.1
>  >>
>  >> ldd /usr/bin/mythbackend
>  >> ...
>  >> libQt5Script.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
>  >> (0x00007f4eb42f8000)
>  >> libQt5Core.so.5 => not found
>  >> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
>  >> (0x00007f4eb40d8000)
>  >> ...
>  >>
>  >> This is very perplexing.
>  >> _______________________________________________
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