We can't use bfd_demangle (which requires libbfd.a) but can just use cplus_demangle (no BFD dependency).
The master branch has been updated by Nick Clifton <nickc@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=79bc120c7be00596098c09cecd25383ae6ddce34 commit 79bc120c7be00596098c09cecd25383ae6ddce34 Author: Nick Clifton <nickc@redhat.com> Date: Wed Aug 12 13:31:59 2020 +0100 Add demangling support to readelf. PR binutils/26331 * readelf.c (do_demangle): New option flag. (print_symbol): If do_demangle is enabled, demangle the symbol. (enum long_option_values): New enum to hold long option values. (options): Add demangle, no-demangle, recursion-limit and no-recursion-limit options. Alpha sort the table. (usage): Describe the new options. (parse_args): Handle the new options. * NEWS: Mention the new feature. * doc/binutils.texi: Document the new feature. * testsuite/binutils-all/readelf.exp: Test the new feature. * testsuite/binutils-all/mangled.s: New file - assembler source. * testsuite/binutils-all/readelf.demangled: New file - expected output from readelf.
Your wish is my command.