#!/usr/bin/env python3

# Copyright 2021 The Emscripten Authors. All rights reserved.

# Emscripten is available under two separate licenses, the MIT license and the

# University of Illinois/NCSA Open Source License. Both these licenses can be

# found in the LICENSE file.

# Copy local llvm library changes into the upstream llvm tree.

# This is the logical inverse of update_compiler_rt.py, update_libcxx.py

# and update_libcxxabi.py which copy changes form the upstream llvm

# into emscripten.

import glob

import os

import sys

import shutil

script_dir = os.path.abspath(os.path.dirname(__file__))

emscripten_root = os.path.dirname(os.path.dirname(script_dir))

default_llvm_dir = os.path.join(os.path.dirname(emscripten_root), 'llvm-project')

copy_dirs = [

'compiler-rt',

'libcxx',

'libcxxabi',

'libunwind',

]

def main():

if len(sys.argv) > 1:

upstream_root = os.path.join(os.path.abspath(sys.argv[1]))

else:

upstream_root = default_llvm_dir

if not os.path.exists(upstream_root):

print(f'llvm tree not found: {upstream_root}')

return 1

for dir in copy_dirs:

assert os.path.exists(os.path.join(upstream_root, dir))

for dir in copy_dirs:

local_dir = os.path.join(script_dir, dir)

upstream_dir = os.path.join(upstream_root, dir)

print(f'copying {local_dir} -> {upstream_dir}')

shutil.copytree(local_dir, upstream_dir, dirs_exist_ok=True)

if __name__ == '__main__':

main()