1# Copyright (C) 2021 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15# This is the init script that is passed to `emcc --em-config=.emscripten` 16# (Wasm toolchain). It sets vars to locate the various emsdk / llvm dirs. 17 18import os 19import sys 20from platform import system 21 22# We cannot use __file__ here. 23this_file = os.getenv('EM_CONFIG') 24if this_file is None: 25 sys.stderr.write('Could not find EM_CONFIG in .emscripten\n') 26 sys.exit(1) 27 28root_dir = os.path.dirname(os.path.dirname(os.path.dirname(this_file))) 29buildools_os = 'mac' if system().lower() == 'darwin' else 'linux64' 30node_path = os.path.join(root_dir, 'buildtools', buildools_os, 'nodejs') 31emsdk_path = os.path.join(root_dir, 'buildtools', buildools_os, 'emsdk') 32 33# Exported vars. 34NODE_JS = os.path.join(node_path, 'bin', 'node') 35LLVM_ROOT = os.path.join(emsdk_path, 'bin') 36BINARYEN_ROOT = emsdk_path 37EMSCRIPTEN_ROOT = os.path.join(emsdk_path, 'emscripten') 38COMPILER_ENGINE = NODE_JS 39JS_ENGINES = [NODE_JS] 40