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#!/usr/bin/python
# Copyright (c) 2012 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.
"""Diagnose some common system configuration problems on Linux, and
suggest fixes."""
import os
import subprocess
import sys
all_checks = []
def Check(name):
"""Decorator that defines a diagnostic check."""
def wrap(func):
all_checks.append((name, func))
return func
return wrap
@Check("/usr/bin/ld is not gold")
def CheckSystemLd():
proc = subprocess.Popen(['/usr/bin/ld', '-v'], stdout=subprocess.PIPE)
stdout = proc.communicate()[0]
if 'GNU gold' in stdout:
return ("When /usr/bin/ld is gold, system updates can silently\n"
"corrupt your graphics drivers.\n"
"Try 'sudo apt-get remove binutils-gold'.\n")
return None
@Check("random lds are not in the $PATH")
def CheckPathLd():
proc = subprocess.Popen(['which', '-a', 'ld'], stdout=subprocess.PIPE)
stdout = proc.communicate()[0]
instances = stdout.split()
if len(instances) > 1:
return ("You have multiple 'ld' binaries in your $PATH:\n"
+ '\n'.join(' - ' + i for i in instances) + "\n"
"You should delete all of them but your system one.\n"
"gold is hooked into your build via gyp.\n")
return None
@Check("/usr/bin/ld doesn't point to gold")
def CheckLocalGold():
# Check /usr/bin/ld* symlinks.
for path in ('ld.bfd', 'ld'):
path = '/usr/bin/' + path
try:
target = os.readlink(path)
except OSError, e:
if e.errno == 2:
continue # No such file
if e.errno == 22:
continue # Not a symlink
raise
if '/usr/local/gold' in target:
return ("%s is a symlink into /usr/local/gold.\n"
"It's difficult to make a recommendation, because you\n"
"probably set this up yourself. But you should make\n"
"/usr/bin/ld be the standard linker, which you likely\n"
"renamed /usr/bin/ld.bfd or something like that.\n" % path)
return None
@Check("random ninja binaries are not in the $PATH")
def CheckPathNinja():
proc = subprocess.Popen(['which', 'ninja'], stdout=subprocess.PIPE)
stdout = proc.communicate()[0]
if not 'depot_tools' in stdout:
return ("The ninja binary in your path isn't from depot_tools:\n"
+ " " + stdout +
"Remove custom ninjas from your path so that the one\n"
"in depot_tools is used.\n")
return None
def RunChecks():
for name, check in all_checks:
sys.stdout.write("* Checking %s: " % name)
sys.stdout.flush()
error = check()
if not error:
print "ok"
else:
print "FAIL"
print error
if __name__ == '__main__':
RunChecks()
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