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# Copyright 2015 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from __future__ import print_function
import sys
import os
import re
try:
from exceptions import RuntimeError
except ImportError:
pass
def GetNinjaOutputDirectory(v8_root, configuration=None):
"""Returns <v8_root>/<output_dir>/(Release|Debug|<other>).
The configuration chosen is the one most recently generated/built, but can be
overriden via the <configuration> parameter. Detects a custom output_dir
specified by GYP_GENERATOR_FLAGS."""
output_dirs = []
generator_flags = os.getenv('GYP_GENERATOR_FLAGS', '').split(' ')
for flag in generator_flags:
name_value = flag.split('=', 1)
if (len(name_value) == 2 and name_value[0] == 'output_dir' and
os.path.isdir(os.path.join(v8_root, name_value[1]))):
output_dirs = [name_value[1]]
if configuration:
output_dir = 'out' if len(output_dirs) == 0 else output_dirs[-1]
return os.path.join(os.path.join(v8_root, output_dir), configuration)
if not output_dirs:
for f in os.listdir(v8_root):
if re.match(r'out(\b|_)', f):
if os.path.isdir(os.path.join(v8_root, f)):
output_dirs.append(f)
def generate_paths():
for out_dir in output_dirs:
out_path = os.path.join(v8_root, out_dir)
for config in os.listdir(out_path):
path = os.path.join(out_path, config)
if os.path.exists(os.path.join(path, 'build.ninja')):
yield path
def approx_directory_mtime(path):
# This is a heuristic; don't recurse into subdirectories.
paths = [path] + [os.path.join(path, f) for f in os.listdir(path)]
return max(filter(None, [safe_mtime(p) for p in paths]))
def safe_mtime(path):
try:
return os.path.getmtime(path)
except OSError:
return None
try:
return max(generate_paths(), key=approx_directory_mtime)
except ValueError:
raise RuntimeError('Unable to find a valid ninja output directory.')
if __name__ == '__main__':
if len(sys.argv) != 2:
raise RuntimeError('Expected a single path argument.')
print(GetNinjaOutputDirectory(sys.argv[1]))
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