Function phase_post_link

tools/link.py:1900–1944

(options, in_wasm, wasm_target, target, js_syms, base_metadata=None)

@ToolchainProfiler.profile_block('post link')
def phase_post_link(options, in_wasm, wasm_target, target, js_syms, base_metadata=None):
  global final_js

  target_basename = unsuffixed_basename(target)

  if options.oformat != OFormat.WASM:
    final_js = in_temp(target_basename + '.js')

  settings.TARGET_BASENAME = unsuffixed_basename(target)

  if options.oformat in {OFormat.JS, OFormat.MJS}:
    js_target = target
  else:
    js_target = get_secondary_target(target, '.js')

  settings.TARGET_JS_NAME = os.path.basename(js_target)

  if settings.WASM_BINDGEN:
    bindgen_jslib = building.run_wasm_bindgen(in_wasm)
    settings.JS_LIBRARIES.append(bindgen_jslib)

  metadata = phase_emscript(in_wasm, wasm_target, js_syms, base_metadata)

  if settings.EMBIND_AOT:
    phase_embind_aot(options, wasm_target, js_syms)

  if options.emit_tsd:
    phase_emit_tsd(options, wasm_target, js_target, js_syms, metadata)

  if options.js_transform:
    phase_source_transforms(options)

  phase_binaryen(target, options, wasm_target)

  # Compute the SHA-256 hash of the final wasm (after binaryen) and substitute
  # the <<< WASM_HASH_VALUE >>> placeholder that preamble.js left in the JS.
  if final_js and settings.CROSS_ORIGIN_STORAGE:
    wasm_hash_value = hashlib.sha256(utils.read_binary(wasm_target)).hexdigest()
    logger.debug(f'CROSS_ORIGIN_STORAGE: wasm SHA-256 = {wasm_hash_value}')
    js_content = do_replace(read_file(final_js), '<<< WASM_HASH_VALUE >>>', wasm_hash_value)
    write_file(final_js, js_content)

  # If we are not emitting any JS then we are all done now
  if options.oformat != OFormat.WASM:
    phase_final_emitting(options, target, js_target, wasm_target)


@ToolchainProfiler.profile_block('emscript')