emcc.bat --version

C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten>emrun.bat --version
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emrun.py:515: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if code is not 200:
usage: emrun [emrun_options] filename.html [html_cmdline_options]

   where emrun_options specifies command line options for emrun itself, whereas
   html_cmdline_options specifies startup arguments to the program.
emrun.py: error: unrecognized arguments: --version

C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten>emcc.bat --version
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py:781: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  newargs = [arg for arg in newargs if arg is not '']
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py:896: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  newargs = [a for a in newargs if a is not '']
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py:1157: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  assert options.use_closure_compiler is not 2, 'EMTERPRETIFY requires valid asm.js, and is incompatible with closure 2 which disables that'
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py:2360: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  newargs = [arg for arg in newargs if arg is not '']
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\shared.py:147: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if self.returncode is not 0:
C:\Program Files\Unity\Hub\2019.3.13f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\tools\shared.py:1687: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if res.returncode is not 0:
INFO:root:generating system asset: is_vanilla.txt... (this will be cached in "C:\Users\jupit\.emscripten_cache\is_vanilla.txt" for subsequent builds)
INFO:root: - ok
emcc (Emscripten gcc/clang-like replacement) 1.38.11 ((unknown revision))
Copyright (C) 2014 the Emscripten authors (see AUTHORS.txt)
This is free and open source software under the MIT license.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.