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#!/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.
# TODO(slightlyoff): move to using shared version of this script.
'''This script makes it easy to combine libs and object files to a new lib,
optionally removing some of the object files in the input libs by regular
expression matching.
For usage information, run the script with a --help argument.
'''
import optparse
import os
import re
import subprocess
import sys
def Shell(*args):
'''Runs the program and args in args, returns the output from the program.'''
process = subprocess.Popen(args,
stdin = None,
stdout = subprocess.PIPE,
stderr = subprocess.STDOUT)
output = process.stdout.readlines()
process.wait()
retcode = process.returncode
if retcode != 0:
raise RuntimeError('%s exited with status %d' % (args[0], retcode))
return output
def CollectRemovals(remove_re, inputs):
'''Returns a list of all object files in inputs that match remove_re.'''
removals = []
for input in inputs:
output = Shell('lib.exe', '/list', input)
for line in output:
line = line.rstrip()
if remove_re.search(line):
removals.append(line)
return removals
def CombineLibraries(output, remove_re, inputs):
'''Combines all the libraries and objects in inputs, while removing any
object files that match remove_re.
'''
removals = []
if remove_re:
removals = CollectRemovals(remove_re, inputs)
print removals
args = ['lib.exe', '/out:%s' % output]
args += ['/remove:%s' % obj for obj in removals]
args += inputs
Shell(*args)
USAGE = '''usage: %prog [options] <lib or obj>+
Combines input libraries or objects into an output library, while removing
any object file (in the input libraries) that matches a given regular
expression.
'''
def GetOptionParser():
parser = optparse.OptionParser(USAGE)
parser.add_option('-o', '--output', dest = 'output',
help = 'write to this output library')
parser.add_option('-r', '--remove', dest = 'remove',
help = 'object files matching this regexp will be removed '
'from the output library')
return parser
def Main():
'''Main function for this script'''
parser = GetOptionParser()
(opt, args) = parser.parse_args()
output = opt.output
remove = opt.remove
if not output:
parser.error('You must specify an output file')
if not args:
parser.error('You must specify at least one object or library')
output = output.strip()
remove = remove.strip()
if remove:
try:
remove_re = re.compile(opt.remove)
except:
parser.error('%s is not a valid regular expression' % opt.remove)
else:
remove_re = None
if sys.platform != 'win32' and sys.platform != 'cygwin':
parser.error('this script only works on Windows for now')
# If this is set, we can't capture lib.exe's output.
if 'VS_UNICODE_OUTPUT' in os.environ:
del os.environ['VS_UNICODE_OUTPUT']
CombineLibraries(output, remove_re, args)
return 0
if __name__ == '__main__':
sys.exit(Main())
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