How to build rusty_v8 with old v8 version?

target_os = "linux"
is_debug = false
target_cpu = "x64"
use_custom_libcxx = false
clang_use_chrome_plugins = false
is_component_build = false
is_clang = true
v8_static_library = true
v8_use_external_startup_data = false
v8_enable_test_features = false
v8_enable_i18n_support = false
treat_warnings_as_errors = false

error: failed to build archive: 'v8_libbase/bits.o': No such file or directory