Patch series proposed upstream:

  <https://sourceware.org/pipermail/libc-alpha/2021-June/127473.html>

Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Jun 9 14:12:46 2021 +0200

    nptl_db: Install libthread_db under a regular implementation name
    
    Currently, the name is always libthread_db-1.0.so.  It does not change
    with the glibc version, like the other libraries.
    
    GDB hard-codes libthread_db.so.1 (the soname), so this change does not
    affect loading libthread_db.
    
    Tested on x86_64-linux-gnu, in an environment where the nptl GDB tests
    actually run.

diff --git a/nptl_db/Makefile b/nptl_db/Makefile
index ea721c1dcfce6e7b..1f79c018a1f9fe19 100644
--- a/nptl_db/Makefile
+++ b/nptl_db/Makefile
@@ -21,8 +21,6 @@ subdir          := nptl_db
 
 include ../Makeconfig
 
-nptl_db-version = 1.0
-
 extra-libs = libthread_db
 extra-libs-others := $(extra-libs)