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-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("--shared-openssl",

    action="store_true",

    dest="shared_openssl",

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

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

    action="store",

    dest="shared_openssl_includes",

    help="Directory containing OpenSSL header files")

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

    action="store",

    dest="shared_openssl_libpath",

    help="A directory to search for the shared OpenSSL DLLs")

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

    action="store",

    dest="shared_openssl_libname",

    help="Alternative lib name to link to (default: 'crypto,ssl')")

# deprecated

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

    action="store_true",

    dest="shared_openssl",

    help=optparse.SUPPRESS_HELP)

# deprecated

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

    action="store",

    dest="shared_openssl_includes",

    help=optparse.SUPPRESS_HELP)

# deprecated

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

    action="store",

    dest="shared_openssl_libpath",

    help=optparse.SUPPRESS_HELP)

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 (default is true on supported systems)")

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

    action="store_true",

    dest="without_dtrace",

    help="Build without DTrace")

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

    action="store_true",

    dest="with_etw",

    help="Build with ETW (default is true on Windows)")

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

    action="store_true",

    dest="without_etw",

    help="Build without ETW")

# 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")

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

    action="store_true",

    dest="no_ifaddrs",

    help="Use on deprecated SunOS systems that do not support ifaddrs.h")

parser.add_option("--with-arm-float-abi",

    action="store",

    dest="arm_float_abi",

    help="Specifies which floating-point ABI to use. Valid values are: "

         "soft, softfp, hard")

(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 cc_macros():

  """Checks predefined macros using the CC command."""

  try:

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

                         stdin=subprocess.PIPE,

                         stdout=subprocess.PIPE,

                         stderr=subprocess.PIPE)

  except OSError:

    print '''Node.js configure error: No acceptable C compiler found!

        Please make sure you have a C compiler installed on your system and/or

        consider adjusting the CC environment variable if you installed

        it in a non-standard prefix.

        '''

    sys.exit()

  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

  return k

def is_arch_armv7():

  """Check for ARMv7 instructions"""

  cc_macros_cache = cc_macros()

  return ('__ARM_ARCH_7__' in cc_macros_cache or

          '__ARM_ARCH_7A__' in cc_macros_cache or

          '__ARM_ARCH_7R__' in cc_macros_cache or

          '__ARM_ARCH_7M__' in cc_macros_cache)

def arm_hard_float_abi():

  """Check for hardfloat or softfloat eabi on ARM"""

  # GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify

  # the Floating Point ABI used (PCS stands for Procedure Call Standard).

  # We use these as well as a couple of other defines to statically determine

  # what FP ABI used.

  # GCC versions 4.4 and below don't support hard-fp.

  # GCC versions 4.5 may support hard-fp without defining __ARM_PCS or

  # __ARM_PCS_VFP.

  if compiler_version() >= (4, 6, 0):

    return '__ARM_PCS_VFP' in cc_macros()

  elif compiler_version() < (4, 5, 0):

    return False

  elif '__ARM_PCS_VFP' in cc_macros():

    return True

  elif ('__ARM_PCS' in cc_macros() or

        '__SOFTFP' in cc_macros() or

        not '__VFP_FP__' in cc_macros()):

    return False

  else:

    print '''Node.js configure error: Your version of GCC does not report

      the Floating-Point ABI to compile for your hardware

      Please manually specify which floating-point ABI to use with the

      --with-arm-float-abi option.

      '''

    sys.exit()

def host_arch_cc():

  """Host architecture check using the CC command."""

  k = cc_macros()

  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 host_arch_win():

  """Host architecture check using environ vars (better way to do this?)"""

  arch = os.environ.get('PROCESSOR_ARCHITECTURE', 'x86')

  matchup = {

    'AMD64'  : 'x64',

    'x86'    : 'ia32',

    'arm'    : 'arm',

  }

  return matchup.get(arch, 'ia32')

def compiler_version():

  try:

    proc = subprocess.Popen(CC.split() + ['--version'], stdout=subprocess.PIPE)

  except WindowsError:

    return (0, False)

  is_clang = 'clang' in proc.communicate()[0].split('\n')[0]

  proc = subprocess.Popen(CC.split() + ['-dumpversion'], stdout=subprocess.PIPE)

  version = tuple(map(int, proc.communicate()[0].split('.')))

  return (version, is_clang)

def configure_node(o):

  # TODO add gdb

  o['variables']['v8_no_strict_aliasing'] = 1 # work around compiler bugs

  o['variables']['node_prefix'] = os.path.expanduser(options.prefix or '')

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

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

  host_arch = host_arch_win() if os.name == 'nt' else host_arch_cc()

  target_arch = options.dest_cpu or host_arch

  o['variables']['host_arch'] = host_arch

  o['variables']['target_arch'] = target_arch

  # V8 on ARM requires that armv7 is set. CPU Model detected by

  # the presence of __ARM_ARCH_7__ and the like defines in compiler

  if target_arch == 'arm':

    if options.arm_float_abi:

      hard_float = options.arm_float_abi == 'hard'

    else:

      hard_float = arm_hard_float_abi()

    o['variables']['v8_use_arm_eabi_hardfloat'] = b(hard_float)

    o['variables']['armv7'] = 1 if is_arch_armv7() else 0

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

  cc_version, is_clang = compiler_version()

  if not is_clang and cc_version < (4,0,0):

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

  # By default, enable DTrace on SunOS systems. Don't allow it on other

  # systems, since it won't work.  (The MacOS build process is different than

  # SunOS, and we haven't implemented it.)

  if sys.platform.startswith('sunos'):

    o['variables']['node_use_dtrace'] = b(not options.without_dtrace)

  elif b(options.with_dtrace) == 'true':

    raise Exception('DTrace is currently only supported on SunOS systems.')

  else:

    o['variables']['node_use_dtrace'] = 'false'

  if options.no_ifaddrs:

    o['defines'] += ['SUNOS_NO_IFADDRS']

  # By default, enable ETW on Windows.

  if sys.platform.startswith('win32'):

    o['variables']['node_use_etw'] = b(not options.without_etw);

  elif b(options.with_etw) == 'true':

    raise Exception('ETW is only supported on Windows.')

  else:

    o['variables']['node_use_etw'] = 'false'

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]

def configure_openssl(o):

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

  o['variables']['node_shared_openssl'] = b(options.shared_openssl)

  if options.without_ssl:

    return

  if options.no_ssl2:

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

  if options.shared_openssl:

    (libs, cflags) = pkg_config('openssl') or ('-lssl -lcrypto', '')

    if options.shared_openssl_libpath:

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

    if options.shared_openssl_libname:

      libnames = options.shared_openssl_libname.split(',')

      o['libraries'] += ['-l%s' % s for s in libnames]

    else:

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

    if options.shared_openssl_includes:

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

    else:

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

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

  f = open(filename, 'w+')

  f.write(data)

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

  pprint.pformat(output, indent=2) + "\n")

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

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

if os.name == 'nt':

  gyp_args = ['-f', 'msvs', '-G', 'msvs_version=2010']

else:

  gyp_args = ['-f', 'make']

subprocess.call([sys.executable, 'tools/gyp_node'] + gyp_args)