Function finalize_wasm

tools/emscripten.py:497–632

(infile, outfile, js_syms)

def finalize_wasm(infile, outfile, js_syms):
  building.save_intermediate(infile, 'base.wasm')
  args = []

  # if we don't need to modify the wasm, don't tell finalize to emit a wasm file
  modify_wasm = False
  need_name_section = False

  if settings.WASM2JS:
    # wasm2js requires full legalization (and will do extra wasm binary
    # later processing later anyhow)
    modify_wasm = True
  if settings.DEBUG_LEVEL >= 2 or settings.ASYNCIFY_ADD or settings.ASYNCIFY_ADVISE or settings.ASYNCIFY_ONLY or settings.ASYNCIFY_REMOVE or settings.EMIT_SYMBOL_MAP or settings.EMIT_NAME_SECTION:
    need_name_section = True
    args.append('-g')
  if settings.WASM_BIGINT:
    args.append('--bigint')
  if settings.DYNCALLS:
    # we need to add all dyncalls to the wasm
    modify_wasm = True
  else:
    if settings.WASM_BIGINT:
      args.append('--no-dyncalls')
    else:
      args.append('--dyncalls-i64')
      # we need to add some dyncalls to the wasm
      modify_wasm = True
  if settings.AUTODEBUG:
    # In AUTODEBUG mode we want to delay all legalization until later.  This is hack
    # to force wasm-emscripten-finalize not to do any legalization at all.
    args.append('--bigint')
  else:
    if settings.LEGALIZE_JS_FFI:
      # When we dynamically link our JS loader adds functions from wasm modules to
      # the table. It must add the original versions of them, not legalized ones,
      # so that indirect calls have the right type, so export those.
      args += building.js_legalization_pass_flags()
      modify_wasm = True
    else:
      args.append('--no-legalize-javascript-ffi')
  if settings.SIDE_MODULE:
    args.append('--side-module')
  if settings.STACK_OVERFLOW_CHECK >= 2:
    args.append('--check-stack-overflow')
    # The check-stack pass in binaryen needs to be able to locate `__stack_pointer` by name.
    modify_wasm = True
    need_name_section = True
  if settings.STANDALONE_WASM:
    args.append('--standalone-wasm')

  if settings.DEBUG_LEVEL >= 3:
    args.append('--dwarf')

  if infile != outfile:
    shutil.copy(infile, outfile)

  if settings.GENERATE_SOURCE_MAP:
    building.emit_wasm_source_map(infile, outfile + '.map', outfile)