configure

   1 #!/usr/bin/env python
   2 import optparse
   3 import os
   4 import pprint
   5 import re
   6 import shlex
   7 import subprocess
   8 import sys
   9
  10 CC = os.environ.get('CC', 'cc')
  11
  12 root_dir = os.path.dirname(__file__)
  13 sys.path.insert(0, os.path.join(root_dir, 'tools', 'gyp', 'pylib'))
  14 from gyp.common import GetFlavor
  15
  16 # parse our options
  17 parser = optparse.OptionParser()
  18
  19 parser.add_option("--debug",
  20     action="store_true",
  21     dest="debug",
  22     help="Also build debug build")
  23
  24 parser.add_option("--prefix",
  25     action="store",
  26     dest="prefix",
  27     help="Select the install prefix (defaults to /usr/local)")
  28
  29 parser.add_option("--without-npm",
  30     action="store_true",
  31     dest="without_npm",
  32     help="Don\'t install the bundled npm package manager")
  33
  34 parser.add_option("--without-ssl",
  35     action="store_true",
  36     dest="without_ssl",
  37     help="Build without SSL")
  38
  39 parser.add_option("--without-snapshot",
  40     action="store_true",
  41     dest="without_snapshot",
  42     help="Build without snapshotting V8 libraries. You might want to set"
  43          " this for cross-compiling. [Default: False]")
  44
  45 parser.add_option("--shared-v8",
  46     action="store_true",
  47     dest="shared_v8",
  48     help="Link to a shared V8 DLL instead of static linking")
  49
  50 parser.add_option("--shared-v8-includes",
  51     action="store",
  52     dest="shared_v8_includes",
  53     help="Directory containing V8 header files")
  54
  55 parser.add_option("--shared-v8-libpath",
  56     action="store",
  57     dest="shared_v8_libpath",
  58     help="A directory to search for the shared V8 DLL")
  59
  60 parser.add_option("--shared-v8-libname",
  61     action="store",
  62     dest="shared_v8_libname",
  63     help="Alternative lib name to link to (default: 'v8')")
  64
  65 parser.add_option("--shared-openssl",
  66     action="store_true",
  67     dest="shared_openssl",
  68     help="Link to a shared OpenSSl DLL instead of static linking")
  69
  70 parser.add_option("--shared-openssl-includes",
  71     action="store",
  72     dest="shared_openssl_includes",
  73     help="Directory containing OpenSSL header files")
  74
  75 parser.add_option("--shared-openssl-libpath",
  76     action="store",
  77     dest="shared_openssl_libpath",
  78     help="A directory to search for the shared OpenSSL DLLs")
  79
  80 parser.add_option("--shared-openssl-libname",
  81     action="store",
  82     dest="shared_openssl_libname",
  83     help="Alternative lib name to link to (default: 'crypto,ssl')")
  84
  85 # deprecated
  86 parser.add_option("--openssl-use-sys",
  87     action="store_true",
  88     dest="shared_openssl",
  89     help=optparse.SUPPRESS_HELP)
  90
  91 # deprecated
  92 parser.add_option("--openssl-includes",
  93     action="store",
  94     dest="shared_openssl_includes",
  95     help=optparse.SUPPRESS_HELP)
  96
  97 # deprecated
  98 parser.add_option("--openssl-libpath",
  99     action="store",
 100     dest="shared_openssl_libpath",
 101     help=optparse.SUPPRESS_HELP)
 102
 103 # TODO document when we've decided on what the tracing API and its options will
 104 # look like
 105 parser.add_option("--systemtap-includes",
 106     action="store",
 107     dest="systemtap_includes",
 108     help=optparse.SUPPRESS_HELP)
 109
 110 parser.add_option("--no-ssl2",
 111     action="store_true",
 112     dest="no_ssl2",
 113     help="Disable OpenSSL v2")
 114
 115 parser.add_option("--shared-zlib",
 116     action="store_true",
 117     dest="shared_zlib",
 118     help="Link to a shared zlib DLL instead of static linking")
 119
 120 parser.add_option("--shared-zlib-includes",
 121     action="store",
 122     dest="shared_zlib_includes",
 123     help="Directory containing zlib header files")
 124
 125 parser.add_option("--shared-zlib-libpath",
 126     action="store",
 127     dest="shared_zlib_libpath",
 128     help="A directory to search for the shared zlib DLL")
 129
 130 parser.add_option("--shared-zlib-libname",
 131     action="store",
 132     dest="shared_zlib_libname",
 133     help="Alternative lib name to link to (default: 'z')")
 134
 135 parser.add_option("--shared-http-parser",
 136     action="store_true",
 137     dest="shared_http_parser",
 138     help="Link to a shared http_parser DLL instead of static linking")
 139
 140 parser.add_option("--shared-http-parser-includes",
 141     action="store",
 142     dest="shared_http_parser_includes",
 143     help="Directory containing http_parser header files")
 144
 145 parser.add_option("--shared-http-parser-libpath",
 146     action="store",
 147     dest="shared_http_parser_libpath",
 148     help="A directory to search for the shared http_parser DLL")
 149
 150 parser.add_option("--shared-http-parser-libname",
 151     action="store",
 152     dest="shared_http_parser_libname",
 153     help="Alternative lib name to link to (default: 'http_parser')")
 154
 155 parser.add_option("--shared-cares",
 156     action="store_true",
 157     dest="shared_cares",
 158     help="Link to a shared cares DLL instead of static linking")
 159
 160 parser.add_option("--shared-cares-includes",
 161     action="store",
 162     dest="shared_cares_includes",
 163     help="Directory containing cares header files")
 164
 165 parser.add_option("--shared-cares-libpath",
 166     action="store",
 167     dest="shared_cares_libpath",
 168     help="A directory to search for the shared cares DLL")
 169
 170 parser.add_option("--shared-cares-libname",
 171     action="store",
 172     dest="shared_cares_libname",
 173     help="Alternative lib name to link to (default: 'cares')")
 174
 175 parser.add_option("--shared-libuv",
 176     action="store_true",
 177     dest="shared_libuv",
 178     help="Link to a shared libuv DLL instead of static linking")
 179
 180 parser.add_option("--shared-libuv-includes",
 181     action="store",
 182     dest="shared_libuv_includes",
 183     help="Directory containing libuv header files")
 184
 185 parser.add_option("--shared-libuv-libpath",
 186     action="store",
 187     dest="shared_libuv_libpath",
 188     help="A directory to search for the shared libuv DLL")
 189
 190 parser.add_option("--shared-libuv-libname",
 191     action="store",
 192     dest="shared_libuv_libname",
 193     help="Alternative lib name to link to (default: 'uv')")
 194
 195 parser.add_option("--with-dtrace",
 196     action="store_true",
 197     dest="with_dtrace",
 198     help="Build with DTrace (default is true on sunos)")
 199
 200 parser.add_option("--without-dtrace",
 201     action="store_true",
 202     dest="without_dtrace",
 203     help="Build without DTrace")
 204
 205 parser.add_option("--with-etw",
 206     action="store_true",
 207     dest="with_etw",
 208     help="Build with ETW (default is true on Windows)")
 209
 210 parser.add_option("--without-etw",
 211     action="store_true",
 212     dest="without_etw",
 213     help="Build without ETW")
 214
 215 parser.add_option("--with-perfctr",
 216     action="store_true",
 217     dest="with_perfctr",
 218     help="Build with performance counters (default is true on Windows)")
 219
 220 parser.add_option("--without-perfctr",
 221     action="store_true",
 222     dest="without_perfctr",
 223     help="Build without performance counters")
 224
 225 # CHECKME does this still work with recent releases of V8?
 226 parser.add_option("--gdb",
 227     action="store_true",
 228     dest="gdb",
 229     help="add gdb support")
 230
 231 parser.add_option("--dest-cpu",
 232     action="store",
 233     dest="dest_cpu",
 234     help="CPU architecture to build for. Valid values are: arm, ia32, x64")
 235
 236 parser.add_option("--dest-os",
 237     action="store",
 238     dest="dest_os",
 239     help="Operating system to build for. Valid values are: "
 240          "win, mac, solaris, freebsd, openbsd, linux, android")
 241
 242 parser.add_option("--no-ifaddrs",
 243     action="store_true",
 244     dest="no_ifaddrs",
 245     help="Use on deprecated SunOS systems that do not support ifaddrs.h")
 246
 247 parser.add_option("--with-arm-float-abi",
 248     action="store",
 249     dest="arm_float_abi",
 250     help="Specifies which floating-point ABI to use. Valid values are: "
 251          "soft, softfp, hard")
 252
 253 parser.add_option("--ninja",
 254     action="store_true",
 255     dest="use_ninja",
 256     help="Generate files for the ninja build system")
 257
 258 # Using --unsafe-optimizations voids your warranty.
 259 parser.add_option("--unsafe-optimizations",
 260     action="store_true",
 261     dest="unsafe_optimizations",
 262     help=optparse.SUPPRESS_HELP)
 263
 264 parser.add_option("--xcode",
 265     action="store_true",
 266     dest="use_xcode",
 267     help="Generate build files for use with xcode")
 268
 269 parser.add_option("--tag",
 270     action="store",
 271     dest="tag",
 272     help="Custom build tag")
 273
 274 (options, args) = parser.parse_args()
 275
 276
 277 def b(value):
 278   """Returns the string 'true' if value is truthy, 'false' otherwise."""
 279   if value:
 280     return 'true'
 281   else:
 282     return 'false'
 283
 284
 285 def pkg_config(pkg):
 286   cmd = os.popen('pkg-config --libs %s' % pkg, 'r')
 287   libs = cmd.readline().strip()
 288   ret = cmd.close()
 289   if (ret): return None
 290
 291   cmd = os.popen('pkg-config --cflags %s' % pkg, 'r')
 292   cflags = cmd.readline().strip()
 293   ret = cmd.close()
 294   if (ret): return None
 295
 296   return (libs, cflags)
 297
 298
 299 def cc_macros():
 300   """Checks predefined macros using the CC command."""
 301
 302   try:
 303     p = subprocess.Popen(shlex.split(CC) + ['-dM', '-E', '-'],
 304                          stdin=subprocess.PIPE,
 305                          stdout=subprocess.PIPE,
 306                          stderr=subprocess.PIPE)
 307   except OSError:
 308     print '''Node.js configure error: No acceptable C compiler found!
 309
 310         Please make sure you have a C compiler installed on your system and/or
 311         consider adjusting the CC environment variable if you installed
 312         it in a non-standard prefix.
 313         '''
 314     sys.exit()
 315
 316   p.stdin.write('\n')
 317   out = p.communicate()[0]
 318
 319   out = str(out).split('\n')
 320
 321   k = {}
 322   for line in out:
 323     lst = shlex.split(line)
 324     if len(lst) > 2:
 325       key = lst[1]
 326       val = lst[2]
 327       k[key] = val
 328   return k
 329
 330
 331 def is_arch_armv7():
 332   """Check for ARMv7 instructions"""
 333   cc_macros_cache = cc_macros()
 334   return ('__ARM_ARCH_7__' in cc_macros_cache or
 335           '__ARM_ARCH_7A__' in cc_macros_cache or
 336           '__ARM_ARCH_7R__' in cc_macros_cache or
 337           '__ARM_ARCH_7M__' in cc_macros_cache)
 338
 339
 340 def is_arm_neon():
 341   """Check for ARM NEON support"""
 342   return '__ARM_NEON__' in cc_macros()
 343
 344
 345 def is_arm_hard_float_abi():
 346   """Check for hardfloat or softfloat eabi on ARM"""
 347   # GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify
 348   # the Floating Point ABI used (PCS stands for Procedure Call Standard).
 349   # We use these as well as a couple of other defines to statically determine
 350   # what FP ABI used.
 351   # GCC versions 4.4 and below don't support hard-fp.
 352   # GCC versions 4.5 may support hard-fp without defining __ARM_PCS or
 353   # __ARM_PCS_VFP.
 354
 355   if compiler_version() >= (4, 6, 0):
 356     return '__ARM_PCS_VFP' in cc_macros()
 357   elif compiler_version() < (4, 5, 0):
 358     return False
 359   elif '__ARM_PCS_VFP' in cc_macros():
 360     return True
 361   elif ('__ARM_PCS' in cc_macros() or
 362         '__SOFTFP' in cc_macros() or
 363         not '__VFP_FP__' in cc_macros()):
 364     return False
 365   else:
 366     print '''Node.js configure error: Your version of GCC does not report
 367       the Floating-Point ABI to compile for your hardware
 368
 369       Please manually specify which floating-point ABI to use with the
 370       --with-arm-float-abi option.
 371       '''
 372     sys.exit()
 373
 374
 375 def host_arch_cc():
 376   """Host architecture check using the CC command."""
 377
 378   k = cc_macros()
 379
 380   matchup = {
 381     '__x86_64__'  : 'x64',
 382     '__i386__'    : 'ia32',
 383     '__arm__'     : 'arm',
 384   }
 385
 386   rtn = 'ia32' # default
 387
 388   for i in matchup:
 389     if i in k and k[i] != '0':
 390       rtn = matchup[i]
 391       break
 392
 393   return rtn
 394
 395
 396 def host_arch_win():
 397   """Host architecture check using environ vars (better way to do this?)"""
 398
 399   arch = os.environ.get('PROCESSOR_ARCHITECTURE', 'x86')
 400
 401   matchup = {
 402     'AMD64'  : 'x64',
 403     'x86'    : 'ia32',
 404     'arm'    : 'arm',
 405   }
 406
 407   return matchup.get(arch, 'ia32')
 408
 409
 410 def compiler_version():
 411   try:
 412     proc = subprocess.Popen(shlex.split(CC) + ['--version'], stdout=subprocess.PIPE)
 413   except WindowsError:
 414     return (0, False)
 415
 416   is_clang = 'clang' in proc.communicate()[0].split('\n')[0]
 417
 418   proc = subprocess.Popen(shlex.split(CC) + ['-dumpversion'], stdout=subprocess.PIPE)
 419   version = tuple(map(int, proc.communicate()[0].split('.')))
 420
 421   return (version, is_clang)
 422
 423
 424 def configure_arm(o):
 425   if options.arm_float_abi:
 426     arm_float_abi = options.arm_float_abi
 427   else:
 428     arm_float_abi = 'hard' if is_arm_hard_float_abi() else 'default'
 429   o['variables']['armv7'] = int(is_arch_armv7())
 430   o['variables']['arm_fpu'] = 'vfpv3'  # V8 3.18 no longer supports VFP2.
 431   o['variables']['arm_neon'] = int(is_arm_neon())
 432   o['variables']['arm_thumb'] = 0      # -marm
 433   o['variables']['arm_float_abi'] = arm_float_abi
 434
 435
 436 def configure_node(o):
 437   if options.dest_os == 'android':
 438     o['variables']['OS'] = "android"
 439   o['variables']['v8_enable_gdbjit'] = 1 if options.gdb else 0
 440   o['variables']['v8_no_strict_aliasing'] = 1 # work around compiler bugs
 441   o['variables']['node_prefix'] = os.path.expanduser(options.prefix or '')
 442   o['variables']['node_install_npm'] = b(not options.without_npm)
 443   o['variables']['node_unsafe_optimizations'] = (
 444     1 if options.unsafe_optimizations else 0)
 445   o['default_configuration'] = 'Debug' if options.debug else 'Release'
 446
 447   host_arch = host_arch_win() if os.name == 'nt' else host_arch_cc()
 448   target_arch = options.dest_cpu or host_arch
 449   o['variables']['host_arch'] = host_arch
 450   o['variables']['target_arch'] = target_arch
 451
 452   if target_arch == 'arm':
 453     configure_arm(o)
 454
 455   cc_version, is_clang = compiler_version()
 456   o['variables']['clang'] = 1 if is_clang else 0
 457
 458   if not is_clang and cc_version != 0:
 459     o['variables']['gcc_version'] = 10 * cc_version[0] + cc_version[1]
 460
 461   # clang has always supported -fvisibility=hidden, right?
 462   if not is_clang and cc_version < (4,0,0):
 463     o['variables']['visibility'] = ''
 464
 465   # By default, enable DTrace on SunOS systems. Don't allow it on other
 466   # systems, since it won't work.  (The MacOS build process is different than
 467   # SunOS, and we haven't implemented it.)
 468   if flavor in ('solaris', 'mac'):
 469     o['variables']['node_use_dtrace'] = b(not options.without_dtrace)
 470     o['variables']['uv_use_dtrace'] = o['variables']['node_use_dtrace']
 471     o['variables']['uv_parent_path'] = '/deps/uv/'
 472   elif flavor == 'linux':
 473     o['variables']['node_use_dtrace'] = 'false'
 474     o['variables']['node_use_systemtap'] = b(options.with_dtrace)
 475     if options.systemtap_includes:
 476       o['include_dirs'] += [options.systemtap_includes]
 477   elif options.with_dtrace:
 478     raise Exception(
 479        'DTrace is currently only supported on SunOS, MacOS or Linux systems.')
 480   else:
 481     o['variables']['node_use_dtrace'] = 'false'
 482     o['variables']['node_use_systemtap'] = 'false'
 483
 484   if options.no_ifaddrs:
 485     o['defines'] += ['SUNOS_NO_IFADDRS']
 486
 487   # By default, enable ETW on Windows.
 488   if flavor == 'win':
 489     o['variables']['node_use_etw'] = b(not options.without_etw);
 490   elif options.with_etw:
 491     raise Exception('ETW is only supported on Windows.')
 492   else:
 493     o['variables']['node_use_etw'] = 'false'
 494
 495   # By default, enable Performance counters on Windows.
 496   if flavor == 'win':
 497     o['variables']['node_use_perfctr'] = b(not options.without_perfctr);
 498   elif options.with_perfctr:
 499     raise Exception('Performance counter is only supported on Windows.')
 500   else:
 501     o['variables']['node_use_perfctr'] = 'false'
 502
 503   if options.tag:
 504     o['variables']['node_tag'] = '-' + options.tag
 505   else:
 506     o['variables']['node_tag'] = ''
 507
 508
 509 def configure_libz(o):
 510   o['variables']['node_shared_zlib'] = b(options.shared_zlib)
 511
 512   # assume shared_zlib if one of these is set?
 513   if options.shared_zlib_libpath:
 514     o['libraries'] += ['-L%s' % options.shared_zlib_libpath]
 515   if options.shared_zlib_libname:
 516     o['libraries'] += ['-l%s' % options.shared_zlib_libname]
 517   elif options.shared_zlib:
 518     o['libraries'] += ['-lz']
 519   if options.shared_zlib_includes:
 520     o['include_dirs'] += [options.shared_zlib_includes]
 521
 522
 523 def configure_http_parser(o):
 524     o['variables']['node_shared_http_parser'] = b(options.shared_http_parser)
 525
 526     # assume shared http_parser if one of these is set?
 527     if options.shared_http_parser_libpath:
 528         o['libraries'] += ['-L%s' % options.shared_http_parser_libpath]
 529     if options.shared_http_parser_libname:
 530         o['libraries'] += ['-l%s' % options.shared_http_parser_libname]
 531     elif options.shared_http_parser:
 532         o['libraries'] += ['-lhttp_parser']
 533     if options.shared_http_parser_includes:
 534         o['include_dirs'] += [options.shared_http_parser_includes]
 535
 536
 537 def configure_cares(o):
 538     o['variables']['node_shared_cares'] = b(options.shared_cares)
 539
 540     # assume shared cares if one of these is set?
 541     if options.shared_cares_libpath:
 542         o['libraries'] += ['-L%s' % options.shared_cares_libpath]
 543     if options.shared_cares_libname:
 544         o['libraries'] += ['-l%s' % options.shared_cares_libname]
 545     elif options.shared_cares:
 546         o['libraries'] += ['-lcares']
 547     if options.shared_cares_includes:
 548         o['include_dirs'] += [options.shared_cares_includes]
 549
 550
 551 def configure_libuv(o):
 552   o['variables']['node_shared_libuv'] = b(options.shared_libuv)
 553
 554   # assume shared libuv if one of these is set?
 555   if options.shared_libuv_libpath:
 556     o['libraries'] += ['-L%s' % options.shared_libuv_libpath]
 557   if options.shared_libuv_libname:
 558     o['libraries'] += ['-l%s' % options.shared_libuv_libname]
 559   elif options.shared_libuv:
 560     o['libraries'] += ['-luv']
 561   if options.shared_libuv_includes:
 562     o['include_dirs'] += [options.shared_libuv_includes]
 563
 564
 565 def configure_v8(o):
 566   o['variables']['v8_use_snapshot'] = b(not options.without_snapshot)
 567   o['variables']['node_shared_v8'] = b(options.shared_v8)
 568
 569   # assume shared_v8 if one of these is set?
 570   if options.shared_v8_libpath:
 571     o['libraries'] += ['-L%s' % options.shared_v8_libpath]
 572   if options.shared_v8_libname:
 573     o['libraries'] += ['-l%s' % options.shared_v8_libname]
 574   elif options.shared_v8:
 575     o['libraries'] += ['-lv8']
 576   if options.shared_v8_includes:
 577     o['include_dirs'] += [options.shared_v8_includes]
 578
 579
 580 def configure_openssl(o):
 581   o['variables']['node_use_openssl'] = b(not options.without_ssl)
 582   o['variables']['node_shared_openssl'] = b(options.shared_openssl)
 583
 584   if options.without_ssl:
 585     return
 586
 587   if options.no_ssl2:
 588     o['defines'] += ['OPENSSL_NO_SSL2=1']
 589
 590   if options.shared_openssl:
 591     (libs, cflags) = pkg_config('openssl') or ('-lssl -lcrypto', '')
 592
 593     if options.shared_openssl_libpath:
 594       o['libraries'] += ['-L%s' % options.shared_openssl_libpath]
 595
 596     if options.shared_openssl_libname:
 597       libnames = options.shared_openssl_libname.split(',')
 598       o['libraries'] += ['-l%s' % s for s in libnames]
 599     else:
 600       o['libraries'] += libs.split()
 601
 602     if options.shared_openssl_includes:
 603       o['include_dirs'] += [options.shared_openssl_includes]
 604     else:
 605       o['cflags'] += cflags.split()
 606
 607
 608 def configure_winsdk(o):
 609   if flavor != 'win':
 610     return
 611
 612   winsdk_dir = os.environ.get("WindowsSdkDir")
 613
 614   if winsdk_dir and os.path.isfile(winsdk_dir + '\\bin\\ctrpp.exe'):
 615     print "Found ctrpp in WinSDK--will build generated files into tools/msvs/genfiles."
 616     o['variables']['node_has_winsdk'] = 'true'
 617     return
 618
 619   print "ctrpp not found in WinSDK path--using pre-gen files from tools/msvs/genfiles."
 620
 621
 622 # determine the "flavor" (operating system) we're building for,
 623 # leveraging gyp's GetFlavor function
 624 flavor_params = {};
 625 if (options.dest_os):
 626   flavor_params['flavor'] = options.dest_os;
 627 flavor = GetFlavor(flavor_params);
 628
 629 output = {
 630   'variables': { 'python': sys.executable },
 631   'include_dirs': [],
 632   'libraries': [],
 633   'defines': [],
 634   'cflags': [],
 635 }
 636
 637 configure_node(output)
 638 configure_libz(output)
 639 configure_http_parser(output)
 640 configure_cares(output)
 641 configure_libuv(output)
 642 configure_v8(output)
 643 configure_openssl(output)
 644 configure_winsdk(output)
 645
 646
 647 # variables should be a root level element,
 648 # move everything else to target_defaults
 649 variables = output['variables']
 650 del output['variables']
 651 output = {
 652   'variables': variables,
 653   'target_defaults': output
 654 }
 655 pprint.pprint(output, indent=2)
 656
 657 def write(filename, data):
 658   filename = os.path.join(root_dir, filename)
 659   print "creating ", filename
 660   f = open(filename, 'w+')
 661   f.write(data)
 662
 663 write('config.gypi', "# Do not edit. Generated by the configure script.\n" +
 664   pprint.pformat(output, indent=2) + "\n")
 665
 666 config = {
 667   'BUILDTYPE': 'Debug' if options.debug else 'Release',
 668   'USE_NINJA': str(int(options.use_ninja or 0)),
 669   'USE_XCODE': str(int(options.use_xcode or 0)),
 670   'PYTHON': sys.executable,
 671 }
 672
 673 if options.prefix:
 674   config['PREFIX'] = options.prefix
 675
 676 config = '\n'.join(map('='.join, config.iteritems())) + '\n'
 677
 678 write('config.mk',
 679       '# Do not edit. Generated by the configure script.\n' + config)
 680
 681 if options.use_ninja:
 682   gyp_args = ['-f', 'ninja-' + flavor]
 683 elif options.use_xcode:
 684   gyp_args = ['-f', 'xcode']
 685 elif flavor == 'win':
 686   gyp_args = ['-f', 'msvs', '-G', 'msvs_version=auto']
 687 else:
 688   gyp_args = ['-f', 'make-' + flavor]
 689
 690 subprocess.call([sys.executable, 'tools/gyp_node'] + gyp_args)