class RbSys::CargoBuilder

def platform_specific_rustc_args(dest_dir, flags = [])
  if mingw_target?
    # On mingw platforms, mkmf adds libruby to the linker flags
    flags += libruby_args(dest_dir)
    # Make sure ALSR is used on mingw
    # see https://github.com/rust-lang/rust/pull/75406/files
    flags += ["-C", "link-arg=-Wl,--dynamicbase"]
    flags += ["-C", "link-arg=-Wl,--disable-auto-image-base"]
    # If the gem is installed on a host with build tools installed, but is
    # run on one that isn't the missing libraries will cause the extension
    # to fail on start.
    flags += ["-C", "link-arg=-static-libgcc"]
  elsif darwin_target?
    # See https://github.com/oxidize-rb/rb-sys/issues/88
    dl_flag = "-Wl,-undefined,dynamic_lookup"
    flags += ["-C", "link-arg=#{dl_flag}"] unless makefile_config("DLDFLAGS")&.include?(dl_flag)
  elsif RUBY_ENGINE == "truffleruby"
    dl_flag = "-Wl,-z,lazy"
    flags += ["-C", "link-arg=#{dl_flag}"] unless makefile_config("DLDFLAGS")&.include?(dl_flag)
    # lazy binding requires RELRO to be off, see https://users.rust-lang.org/t/linux-executable-lazy-loading/65621/2
    flags += ["-C", "relro-level=off"]
  end
  if musl?
    flags += ["-C", "target-feature=-crt-static"]
  end
  flags
end