>> The hint is in the name. ;-)
>>
>> Here is the libr that it is looking for:
>> http://www.compholio.com/elfres/#download
>
> Looks like a Debian/'buntu only thing. I am not seeing anything related
> for Slackware. Easy enough to set to OFF. :)

It's not.  There are sources on the bottom of the page.

When libr is installed it allows TDE to add and read metadata from ELF
executables, such as a preferred icon, time/date of creation, etc.

Tim