Hi,

I just want to backport the commit to gcc-13 branch:

commit 203f3060dd363361b172f7295f42bb6bf5ac0b3b
Author: Andreas Schwab <schwab@suse.de>
Date:   Sat Apr 23 15:48:42 2022 +0200

     riscv/linux: Don't add -latomic with -pthread

     Now that we have support for inline subword atomic operations, it is no
     longer necessary to link against libatomic.  This also fixes testsuite
     failures because the framework does not properly set up the linker flags
     for finding libatomic.
     The use of atomic operations is also independent of the use of libpthread.

     gcc/
             * config/riscv/linux.h (LIB_SPEC): Don't redefine.

The discussion is here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104338#c20


-- 
Regards,
--
   Bo YU