Method build

test/test_benchmark.py:248–284

(self, parent, filename, shared_args, emcc_args, native_args, native_exec, lib_builder)

      self.env.update(env)

  def build(self, parent, filename, shared_args, emcc_args, native_args, native_exec, lib_builder):
    emcc_args = emcc_args or []
    self.filename = filename
    llvm_root = self.env.get('LLVM') or config.LLVM_ROOT
    if lib_builder:
      env_init = self.env.copy()
      # Note that we need to pass in all the flags here because some build
      # systems (like zlib) if they see a CFLAGS it will override all their
      # default flags, including optimizations.
      env_init['CFLAGS'] = ' '.join(LLVM_FEATURE_FLAGS + [OPTIMIZATIONS] + self.cflags)
      # Avoid mutating incoming emcc_args
      emcc_args = emcc_args.copy()
      emcc_args += lib_builder('js_' + llvm_root, native=False, env_init=env_init)
    final = os.path.dirname(filename) + os.path.sep + self.name + ('_' if self.name else '') + os.path.basename(filename) + '.js'
    final = final.replace('.cpp', '')
    utils.delete_file(final)
    cmd = [
      EMCC, filename,
      OPTIMIZATIONS,
      '-sINITIAL_MEMORY=256MB',
      '-sENVIRONMENT=node,shell',
      '-o', final,
    ] + LLVM_FEATURE_FLAGS
    if shared_args:
      cmd += shared_args
    if PROFILING:
      cmd += ['--profiling']
    else:
      cmd += ['--closure=1', '-sMINIMAL_RUNTIME']
    # add additional emcc args at the end, which may override other things
    # above, such as minimal runtime
    cmd += emcc_args + self.cflags
    if '-sFILESYSTEM' not in cmd and '-sFORCE_FILESYSTEM' not in cmd:
      cmd += ['-sFILESYSTEM=0']
    self.cmd = cmd
    run_process(cmd, env=self.env)
    self.filename = final

  def run(self, args):
    return jsrun.run_js(self.filename, engine=self.engine, args=args, stderr=subprocess.STDOUT)