#!/usr/bin/env python
# Copyright 2011 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import re
import sys
import os
import glob
import errno
import subprocess

def run(*args, **kwargs):
    try:
        subprocess.check_call(*args, **kwargs)
    except subprocess.CalledProcessError, e:
        sys.exit(e.returncode)

# Compute system-specific CFLAGS/LDFLAGS as used in both in the below
# g++ call as well as in the later configure.py.
cflags = os.environ.get('CFLAGS', '')
ldflags = os.environ.get('LDFLAGS', '')
if sys.platform.startswith('freebsd'):
    cflags += ' -I/usr/local/include'
    ldflags += ' -L/usr/local/lib'

print 'Building ninja manually...'

try:
	os.mkdir('build')
except OSError, e:
	if e.errno != errno.EEXIST:
		raise

with open('src/browse.py') as browse_py:
    with open('build/browse_py.h', 'w') as browse_py_h:
        run(['./src/inline.sh', 'kBrowsePy'],
            stdin=browse_py, stdout=browse_py_h)

pattern = r'test\.cc$|\.in\.cc$'

if sys.platform.startswith('win32'):
    pattern += r'|/browse\.cc$|/subprocess\.cc$'
else:
    pattern += r'|-win32\.cc$'

sources = [src for src in glob.glob('src/*.cc') if not re.search(pattern, src)]

args = [os.environ.get('CXX', 'g++'), '-Wno-deprecated',
        '-DNINJA_PYTHON="' + sys.executable + '"']
args.extend(cflags.split())
args.extend(ldflags.split())
args.extend(['-o', 'ninja.bootstrap'])
args.extend(sources)
run(args)

print 'Building ninja using itself...'
run([sys.executable, 'configure.py'] + sys.argv[1:])
run(['./ninja.bootstrap'])
os.unlink('ninja.bootstrap')

print 'Done!'