blob: a65f8deeb7dbc5507e45d848dfb454a93778282b [file] [log] [blame]
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Functions for discovering and clearing the build directory."""
import os
import sys
def IsFileNewerThanFile(file_a, file_b):
"""Returns True if file_a's mtime is newer than file_b's."""
def getmtime(f):
try:
return os.path.getmtime(f)
except os.error:
return 0
return getmtime(file_a) >= getmtime(file_b)
def AreNinjaFilesNewerThanXcodeFiles(src_dir=None):
"""Returns True if the generated ninja files are newer than the generated
xcode files.
Parameters:
src_dir: The path to the src directory. If None, it's assumed to be
at src/ relative to the current working directory.
"""
src_dir = src_dir or 'src'
ninja_path = os.path.join(src_dir, 'out', 'Release', 'build.ninja')
xcode_path = os.path.join(
src_dir, 'build', 'all.xcodeproj', 'project.pbxproj')
return IsFileNewerThanFile(ninja_path, xcode_path)
def AreNinjaFilesNewerThanMSVSFiles(src_dir=None):
"""Returns True if the generated ninja files are newer than the generated
msvs files.
Parameters:
src_dir: The path to the src directory. If None, it's assumed to be
at src/ relative to the current working directory.
"""
src_dir = src_dir or 'src'
ninja_path = os.path.join(src_dir, 'out', 'Release', 'build.ninja')
msvs_path = os.path.join(src_dir, 'build', 'all.sln')
return IsFileNewerThanFile(ninja_path, msvs_path)
def GetBuildOutputDirectory(src_dir=None):
"""Returns the path to the build directory, relative to the checkout root.
Assumes that the current working directory is the checkout root.
"""
# src_dir is only needed for compiling v8, which uses compile.py (but no other
# of the build scripts), but its source root isn't "src" -- crbug.com/315004
if src_dir is None:
src_dir = 'src'
if sys.platform.startswith('linux'):
return os.path.join(src_dir, 'out')
if sys.platform == 'darwin':
if AreNinjaFilesNewerThanXcodeFiles(src_dir):
return os.path.join(src_dir, 'out')
return os.path.join(src_dir, 'xcodebuild')
if sys.platform == 'cygwin' or sys.platform.startswith('win'):
if AreNinjaFilesNewerThanMSVSFiles(src_dir):
return os.path.join(src_dir, 'out')
return os.path.join(src_dir, 'build')
raise NotImplementedError('Unexpected platform %s' % sys.platform)
def RmtreeExceptNinjaOrGomaFiles(build_output_dir):
"""Recursively removes everything but ninja files from a build directory."""
for root, _, files in os.walk(build_output_dir, topdown=False):
for f in files:
# For .manifest in particular, gyp windows ninja generates manifest
# files at generation time but clobber nukes at the beginning of
# compile, so make sure not to delete those generated files, otherwise
# compile will fail.
if (f.endswith('.ninja') or f.endswith('.manifest') or
f == 'args.gn' or f == 'mb_type' or f == 'runtime_deps' or
f.startswith('msvc') or # VS runtime DLLs.
f.startswith('pgort') or # VS PGO runtime DLL.
f.startswith('vccorlib') or # VS2015 core libraries.
f.startswith('vcruntime') or # VS2015 runtime libraries.
f.startswith('ucrtbase') or # Win runtime DLLs for VS.
f.startswith('api-ms-win') or # Win runtime DLLs for VS.
f in ('gyp-mac-tool', 'gyp-win-tool',
'environment.x86', 'environment.x64')):
continue
# Keep goma related files.
if f == '.goma_deps':
continue
os.unlink(os.path.join(root, f))
# Delete the directory if empty; this works because the walk is bottom-up.
try:
os.rmdir(root)
except OSError, e:
if e.errno in (39, 41, 66):
# If the directory isn't empty, ignore it.
# On Windows, os.rmdir will raise WindowsError with winerror 145,
# which e.errno is 41.
# On Linux, e.errno is 39.
pass
else:
raise