CSE2410 Fall 2014 Bounce

#!/usr/bin/env python

import optparse

import os

import pprint

import re

import subprocess

import sys

CC = os.environ.get('CC', 'cc')

root_dir = os.path.dirname(__file__)

sys.path.insert(0, os.path.join(root_dir, 'deps', 'v8', 'tools'))

# parse our options

parser = optparse.OptionParser()

parser.add_option("--debug",

    action="store_true",

    dest="debug",

    help="Also build debug build")

parser.add_option("--prefix",

    action="store",

    dest="prefix",

    help="Select the install prefix (defaults to /usr/local)")

parser.add_option("--without-npm",

    action="store_true",

    dest="without_npm",

    help="Don\'t install the bundled npm package manager")

parser.add_option("--without-waf",

    action="store_true",

    dest="without_waf",

    help="Don\'t install node-waf")

parser.add_option("--without-ssl",

    action="store_true",

    dest="without_ssl",

    help="Build without SSL")

parser.add_option("--without-snapshot",

    action="store_true",

    dest="without_snapshot",

    help="Build without snapshotting V8 libraries. You might want to set"

         " this for cross-compiling. [Default: False]")

parser.add_option("--shared-v8",

    action="store_true",

    dest="shared_v8",

    help="Link to a shared V8 DLL instead of static linking")

parser.add_option("--shared-v8-includes",

    action="store",

    dest="shared_v8_includes",

    help="Directory containing V8 header files")

parser.add_option("--shared-v8-libpath",

    action="store",

    dest="shared_v8_libpath",

    help="A directory to search for the shared V8 DLL")

parser.add_option("--shared-v8-libname",

    action="store",

    dest="shared_v8_libname",

    help="Alternative lib name to link to (default: 'v8')")

parser.add_option("--openssl-use-sys",

    action="store",

    dest="openssl_use_sys",

    help="Use the system OpenSSL instead of one included with Node")

parser.add_option("--openssl-includes",

    action="store",

    dest="openssl_includes",

    help="A directory to search for the OpenSSL includes")

parser.add_option("--openssl-libpath",

    action="store",

    dest="openssl_libpath",

    help="A directory to search for the OpenSSL libraries")

parser.add_option("--no-ssl2",

    action="store_true",

    dest="no_ssl2",

    help="Disable OpenSSL v2")

parser.add_option("--shared-zlib",

    action="store_true",

    dest="shared_zlib",

    help="Link to a shared zlib DLL instead of static linking")

parser.add_option("--shared-zlib-includes",

    action="store",

    dest="shared_zlib_includes",

    help="Directory containing zlib header files")

parser.add_option("--shared-zlib-libpath",

    action="store",

    dest="shared_zlib_libpath",

    help="A directory to search for the shared zlib DLL")

parser.add_option("--shared-zlib-libname",

    action="store",

    dest="shared_zlib_libname",

    help="Alternative lib name to link to (default: 'z')")

parser.add_option("--with-dtrace",

    action="store_true",

    dest="with_dtrace",

    help="Build with DTrace (experimental)")

# CHECKME does this still work with recent releases of V8?

parser.add_option("--gdb",

    action="store_true",

    dest="gdb",

    help="add gdb support")

parser.add_option("--dest-cpu",

    action="store",

    dest="dest_cpu",

    help="CPU architecture to build for. Valid values are: arm, ia32, x64")

(options, args) = parser.parse_args()

def b(value):

  """Returns the string 'true' if value is truthy, 'false' otherwise."""

  if value:

    return 'true'

  else:

    return 'false'

def pkg_config(pkg):

  cmd = os.popen('pkg-config --libs %s' % pkg, 'r')

  libs = cmd.readline().strip()

  ret = cmd.close()

  if (ret): return None

  cmd = os.popen('pkg-config --cflags %s' % pkg, 'r')

  cflags = cmd.readline().strip()

  ret = cmd.close()

  if (ret): return None

  return (libs, cflags)

def host_arch():

  """Host architecture. One of arm, ia32 or x64."""

  p = subprocess.Popen([CC, '-dM', '-E', '-'],

                       stdin=subprocess.PIPE,

                       stdout=subprocess.PIPE,

                       stderr=subprocess.PIPE)

  p.stdin.write('\n')

  out = p.communicate()[0]

  out = str(out).split('\n')

  k = {}

  for line in out:

    import shlex

    lst = shlex.split(line)

    if len(lst) > 2:

      key = lst[1]

      val = lst[2]

      k[key] = val

  matchup = {

    '__x86_64__'  : 'x64',

    '__i386__'    : 'ia32',

    '__arm__'     : 'arm',

  }

  rtn = 'ia32' # default

  for i in matchup:

    if i in k and k[i] != '0':

      rtn = matchup[i]

      break

  return rtn

def target_arch():

  return host_arch()

def gcc_version():

  try:

    proc = subprocess.Popen([CC, '-v'], stderr=subprocess.PIPE)

  except OSError:

    return None

  # TODO parse clang output

  version = proc.communicate()[1].split('\n')[-2]

  match = re.match('gcc version (\d+)\.(\d+)\.(\d+)', version)

  if not match: return None

  return ['LLVM' in version] + map(int, match.groups())

def configure_node(o):

  # TODO add gdb

  o['variables']['node_prefix'] = options.prefix if options.prefix else ''

  o['variables']['node_use_dtrace'] = b(options.with_dtrace)

  o['variables']['node_install_npm'] = b(not options.without_npm)

  o['variables']['node_install_waf'] = b(not options.without_waf)

  o['variables']['host_arch'] = host_arch()

  o['variables']['target_arch'] = options.dest_cpu or target_arch()

  o['default_configuration'] = 'Debug' if options.debug else 'Release'

  # turn off strict aliasing if gcc < 4.6.0 unless it's llvm-gcc

  # see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45883

  # see http://code.google.com/p/v8/issues/detail?id=884

  o['variables']['strict_aliasing'] = b(

    'clang' in CC or gcc_version() >= [False, 4, 6, 0])

  # clang has always supported -fvisibility=hidden, right?

  if 'clang' not in CC and gcc_version() < [False, 4, 0, 0]:

    o['variables']['visibility'] = ''

def configure_libz(o):

  o['variables']['node_shared_zlib'] = b(options.shared_zlib)

  # assume shared_zlib if one of these is set?

  if options.shared_zlib_libpath:

    o['libraries'] += ['-L%s' % options.shared_zlib_libpath]

  if options.shared_zlib_libname:

    o['libraries'] += ['-l%s' % options.shared_zlib_libname]

  elif options.shared_zlib:

    o['libraries'] += ['-lz']

  if options.shared_zlib_includes:

    o['include_dirs'] += [options.shared_zlib_includes]

def configure_v8(o):

  o['variables']['v8_use_snapshot'] = b(not options.without_snapshot)

  o['variables']['node_shared_v8'] = b(options.shared_v8)

  # assume shared_v8 if one of these is set?

  if options.shared_v8_libpath:

    o['libraries'] += ['-L%s' % options.shared_v8_libpath]

  if options.shared_v8_libname:

    o['libraries'] += ['-l%s' % options.shared_v8_libname]

  elif options.shared_v8:

    o['libraries'] += ['-lv8']

  if options.shared_v8_includes:

    o['include_dirs'] += [options.shared_v8_includes]

    o['variables']['node_shared_v8_includes'] = options.shared_v8_includes

def configure_openssl(o):

  o['variables']['node_use_openssl'] = b(not options.without_ssl)

  if options.without_ssl:

    return

  if options.no_ssl2:

    o['defines'] += ['OPENSSL_NO_SSL2=1']

  if not options.openssl_use_sys:

    o['variables']['node_use_system_openssl'] = b(False)

  else:

    out = pkg_config('openssl')

    (libs, cflags) = out if out else ('', '')

    if options.openssl_libpath:

      o['libraries'] += ['-L%s' % options.openssl_libpath, '-lssl', '-lcrypto']

    else:

      o['libraries'] += libs.split()

    if options.openssl_includes:

      o['include_dirs'] += [options.openssl_includes]

    else:

      o['cflags'] += cflags.split()

    o['variables']['node_use_system_openssl'] = b(

      libs or cflags or options.openssl_libpath or options.openssl_includes)

output = {

  'variables': {},

  'include_dirs': [],

  'libraries': [],

  'defines': [],

  'cflags': [],

}

configure_node(output)

configure_libz(output)

configure_v8(output)

configure_openssl(output)

# variables should be a root level element,

# move everything else to target_defaults

variables = output['variables']

del output['variables']

output = {

  'variables': variables,

  'target_defaults': output

}

pprint.pprint(output, indent=2)

def write(filename, data):

  filename = os.path.join(root_dir, filename)

  print "creating ", filename

  with open(filename, 'w+') as f:

    f.write(data)

write('config.gypi', "# Do not edit. Generated by the configure script.\n" +

  pprint.pformat(output, indent=2))

write('config.mk', "# Do not edit. Generated by the configure script.\n" +

  ("BUILDTYPE=%s\n" % ('Debug' if options.debug else 'Release')))

subprocess.call(['tools/gyp_node','-f', 'make'])