The tag is present in Lintian version 2.104.244. That is the most recent version we know about.
The listed shared libraries contain object code that was compiled without -fPIC. All object code in shared libraries should be recompiled separately from the static libraries with the -fPIC option.
Another common mistake that causes this problem is linking with
gcc -Wl,-shared instead of
In some cases, exceptions to this rule are warranted. If this is such a case, follow the procedure outlined in Policy and then please document the exception by adding a Lintian override to this package.
To check whether a shared library has this problem, run
-d on the shared library. If a tag of type TEXTREL is present, the
shared library contains non-PIC code.
Refer to Debian Policy Manual section 10.2 for details.