diff options
Diffstat (limited to 'build/gyp_chromium')
| -rwxr-xr-x | build/gyp_chromium | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/build/gyp_chromium b/build/gyp_chromium new file mode 100755 index 0000000..3cddef6 --- /dev/null +++ b/build/gyp_chromium @@ -0,0 +1,167 @@ +#!/usr/bin/env python + +# Copyright (c) 2011 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. + +# This script is wrapper for Chromium that adds some support for how GYP +# is invoked by Chromium beyond what can be done in the gclient hooks. + +import glob +import os +import shlex +import subprocess +import sys + +script_dir = os.path.dirname(__file__) +chrome_src = os.path.abspath(os.path.join(script_dir, os.pardir)) + +sys.path.insert(0, os.path.join(chrome_src, 'tools', 'gyp', 'pylib')) +import gyp + +# On Windows, Psyco shortens warm runs of build/gyp_chromium by about +# 20 seconds on a z600 machine with 12 GB of RAM, from 90 down to 70 +# seconds. Conversely, memory usage of build/gyp_chromium with Psyco +# maxes out at about 158 MB vs. 132 MB without it. +# +# Psyco uses native libraries, so we need to load a different +# installation depending on which OS we are running under. It has not +# been tested whether using Psyco on our Mac and Linux builds is worth +# it (the GYP running time is a lot shorter, so the JIT startup cost +# may not be worth it). +if sys.platform == 'win32': + try: + sys.path.insert(0, os.path.join(chrome_src, 'third_party', 'psyco_win32')) + import psyco + except: + psyco = None +else: + psyco = None + +def apply_gyp_environment(file_path=None): + """ + Reads in a *.gyp_env file and applies the valid keys to os.environ. + """ + if not file_path or not os.path.exists(file_path): + return + file_contents = open(file_path).read() + try: + file_data = eval(file_contents, {'__builtins__': None}, None) + except SyntaxError, e: + e.filename = os.path.abspath(file_path) + raise + supported_vars = ( 'CHROMIUM_GYP_FILE', + 'CHROMIUM_GYP_SYNTAX_CHECK', + 'GYP_DEFINES', + 'GYP_GENERATOR_FLAGS', + 'GYP_GENERATOR_OUTPUT', ) + for var in supported_vars: + val = file_data.get(var) + if val: + if var in os.environ: + print 'INFO: Environment value for "%s" overrides value in %s.' % ( + var, os.path.abspath(file_path) + ) + else: + os.environ[var] = val + +def additional_include_files(args=[]): + """ + Returns a list of additional (.gypi) files to include, without + duplicating ones that are already specified on the command line. + """ + # Determine the include files specified on the command line. + # This doesn't cover all the different option formats you can use, + # but it's mainly intended to avoid duplicating flags on the automatic + # makefile regeneration which only uses this format. + specified_includes = set() + for arg in args: + if arg.startswith('-I') and len(arg) > 2: + specified_includes.add(os.path.realpath(arg[2:])) + + result = [] + def AddInclude(path): + if os.path.realpath(path) not in specified_includes: + result.append(path) + + # Always include common.gypi & features_override.gypi + AddInclude(os.path.join(script_dir, 'common.gypi')) + AddInclude(os.path.join(script_dir, 'features_override.gypi')) + + # Optionally add supplemental .gypi files if present. + supplements = glob.glob(os.path.join(chrome_src, '*', 'supplement.gypi')) + for supplement in supplements: + AddInclude(supplement) + + return result + +if __name__ == '__main__': + args = sys.argv[1:] + + # Use the Psyco JIT if available. + if psyco: + psyco.profile() + print "Enabled Psyco JIT." + + # Fall back on hermetic python if we happen to get run under cygwin. + # TODO(bradnelson): take this out once this issue is fixed: + # http://code.google.com/p/gyp/issues/detail?id=177 + if sys.platform == 'cygwin': + python_dir = os.path.join(chrome_src, 'third_party', 'python_26') + env = os.environ.copy() + env['PATH'] = python_dir + os.pathsep + env.get('PATH', '') + p = subprocess.Popen( + [os.path.join(python_dir, 'python.exe')] + sys.argv, + env=env, shell=False) + p.communicate() + sys.exit(p.returncode) + + if 'SKIP_CHROMIUM_GYP_ENV' not in os.environ: + # Update the environment based on chromium.gyp_env + gyp_env_path = os.path.join(os.path.dirname(chrome_src), 'chromium.gyp_env') + apply_gyp_environment(gyp_env_path) + + # This could give false positives since it doesn't actually do real option + # parsing. Oh well. + gyp_file_specified = False + for arg in args: + if arg.endswith('.gyp'): + gyp_file_specified = True + break + + # If we didn't get a file, check an env var, and then fall back to + # assuming 'all.gyp' from the same directory as the script. + if not gyp_file_specified: + gyp_file = os.environ.get('CHROMIUM_GYP_FILE') + if gyp_file: + # Note that CHROMIUM_GYP_FILE values can't have backslashes as + # path separators even on Windows due to the use of shlex.split(). + args.extend(shlex.split(gyp_file)) + else: + args.append(os.path.join(script_dir, 'all.gyp')) + + args.extend(['-I' + i for i in additional_include_files(args)]) + + # There shouldn't be a circular dependency relationship between .gyp files, + # but in Chromium's .gyp files, on non-Mac platforms, circular relationships + # currently exist. The check for circular dependencies is currently + # bypassed on other platforms, but is left enabled on the Mac, where a + # violation of the rule causes Xcode to misbehave badly. + # TODO(mark): Find and kill remaining circular dependencies, and remove this + # option. http://crbug.com/35878. + # TODO(tc): Fix circular dependencies in ChromiumOS then add linux2 to the + # list. + if sys.platform not in ('darwin',): + args.append('--no-circular-check') + + # If CHROMIUM_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check + # to enfore syntax checking. + syntax_check = os.environ.get('CHROMIUM_GYP_SYNTAX_CHECK') + if syntax_check and int(syntax_check): + args.append('--check') + + print 'Updating projects from gyp files...' + sys.stdout.flush() + + # Off we go... + sys.exit(gyp.main(args)) |