configure

#!/usr/bin/env python3
# -*- mode: python -*-

import os
import sys
import platform
import shutil
import subprocess
from distutils.spawn import find_executable

if platform.system() != 'Linux':
    print("We only support Linux for now")
    sys.exit(-1)

buck_path = find_executable('buck')

if buck_path:
    print("Found system buck installation")
elif os.path.exists('./buck.pex'):
    print("Found local buck.pex")
else:
    print("Getting Buck...")
    os.system('curl -o buck.pex -L http://fs.csl.utoronto.ca/~mike/buck.pex') # Java11 Compatible build
    os.system('chmod +x buck.pex')

with open('.buckconfig.local', 'w') as f:
    f.write('[cxx]\n')
    f.write('  cc = {clang}\n  cxx = {clangxx}\n  as = {clang}\n  ld = {clangxx}\n'.format(clang=shutil.which('clang'), clangxx=shutil.which('clang++')))
    
    p = subprocess.run(['clang++', '-E', '-v', '-stdlib=libc++', '-xc++', '-'], stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
    s = p.stderr.decode('utf-8').split('\n')

    ccls_inc_path = []

    started = False
    for l in s:
        if l.endswith('> search starts here:'):
            started = True
            continue
        if not started:
            continue
        if l.startswith(' '):
            ccls_inc_path.append('-isystem' + l[1:])
        else:
            started = False

    with open('.ccls', 'w') as f:
        f.write('\n'.join('clang++ -std=c++17 -I. -Ispdlog/include -DCACHE_LINE_SIZE=64'.split(' ') + ccls_inc_path))