Gem::Ext::CargoBuilder#rustc_dynamic_linker_flags

# File tmp/rubies/ruby-3.3.0/lib/rubygems/ext/cargo_builder.rb, line 248
def rustc_dynamic_linker_flags(dest_dir, crate_name)
  split_flags("DLDFLAGS").
    map {|arg| maybe_resolve_ldflag_variable(arg, dest_dir, crate_name) }.
    compact.
    flat_map {|arg| ldflag_to_link_modifier(arg) }
end