tools/activate-emsdk

#!/usr/bin/env python3

# Copyright 2025 Google LLC
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os
import subprocess
import sys
import sysconfig
import textwrap

EMSDK_ROOT = os.path.join('third_party', 'emsdk')

EMSDK_PATH = os.path.join(EMSDK_ROOT, 'emsdk.py')
EMSDK_CONFIG_PATH = os.path.join(EMSDK_ROOT, '.emscripten')

EMSDK_VERSION = '4.0.8'

def main(args):
    parser = argparse.ArgumentParser()
    parser.add_argument('--get-emsdk-version', help='Print emsdk version and exit.', action='store_true')
    options = parser.parse_args()

    if options.get_emsdk_version:
        print(EMSDK_VERSION)
        return 0

    # Install and activate the default dependencies for emsdk.
    try:
        subprocess.check_call([sys.executable, EMSDK_PATH, 'install', EMSDK_VERSION])
    except subprocess.CalledProcessError:
        print ('Failed to install emsdk')
        return 1
    try:
        subprocess.check_call([sys.executable, EMSDK_PATH, 'activate', EMSDK_VERSION])
    except subprocess.CalledProcessError:
        print ('Failed to activate emsdk')
        return 1

    # If we ever need to override the Python, Node, and LLVM binaries used by Emscripten, do that
    # here. See https://dawn-review.googlesource.com/c/dawn/+/238814/4..5 which removed support.

if __name__ == '__main__':
  sys.exit(main(sys.argv))