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      1 #!/usr/bin/python
      2 #
      3 # Copyright 2010 the V8 project authors. All rights reserved.
      4 # Redistribution and use in source and binary forms, with or without
      5 # modification, are permitted provided that the following conditions are
      6 # met:
      7 #
      8 #     * Redistributions of source code must retain the above copyright
      9 #       notice, this list of conditions and the following disclaimer.
     10 #     * Redistributions in binary form must reproduce the above
     11 #       copyright notice, this list of conditions and the following
     12 #       disclaimer in the documentation and/or other materials provided
     13 #       with the distribution.
     14 #     * Neither the name of Google Inc. nor the names of its
     15 #       contributors may be used to endorse or promote products derived
     16 #       from this software without specific prior written permission.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 # This script is wrapper for V8 that adds some support for how GYP
     31 # is invoked by V8 beyond what can be done in the gclient hooks.
     32 
     33 import glob
     34 import os
     35 import shlex
     36 import sys
     37 
     38 script_dir = os.path.dirname(__file__)
     39 v8_root = os.path.normpath(os.path.join(script_dir, os.pardir))
     40 
     41 sys.path.insert(0, os.path.join(v8_root, 'tools'))
     42 import utils
     43 
     44 sys.path.insert(0, os.path.join(v8_root, 'build', 'gyp', 'pylib'))
     45 import gyp
     46 
     47 
     48 def apply_gyp_environment(file_path=None):
     49   """
     50   Reads in a *.gyp_env file and applies the valid keys to os.environ.
     51   """
     52   if not file_path or not os.path.exists(file_path):
     53     return
     54   file_contents = open(file_path).read()
     55   try:
     56     file_data = eval(file_contents, {'__builtins__': None}, None)
     57   except SyntaxError, e:
     58     e.filename = os.path.abspath(file_path)
     59     raise
     60   supported_vars = ( 'V8_GYP_FILE',
     61                      'V8_GYP_SYNTAX_CHECK',
     62                      'GYP_DEFINES',
     63                      'GYP_GENERATOR_FLAGS',
     64                      'GYP_GENERATOR_OUTPUT', )
     65   for var in supported_vars:
     66     val = file_data.get(var)
     67     if val:
     68       if var in os.environ:
     69         print 'INFO: Environment value for "%s" overrides value in %s.' % (
     70             var, os.path.abspath(file_path)
     71         )
     72       else:
     73         os.environ[var] = val
     74 
     75 
     76 def additional_include_files(args=[]):
     77   """
     78   Returns a list of additional (.gypi) files to include, without
     79   duplicating ones that are already specified on the command line.
     80   """
     81   # Determine the include files specified on the command line.
     82   # This doesn't cover all the different option formats you can use,
     83   # but it's mainly intended to avoid duplicating flags on the automatic
     84   # makefile regeneration which only uses this format.
     85   specified_includes = set()
     86   for arg in args:
     87     if arg.startswith('-I') and len(arg) > 2:
     88       specified_includes.add(os.path.realpath(arg[2:]))
     89 
     90   result = []
     91   def AddInclude(path):
     92     if os.path.realpath(path) not in specified_includes:
     93       result.append(path)
     94 
     95   # Always include standalone.gypi
     96   AddInclude(os.path.join(script_dir, 'standalone.gypi'))
     97 
     98   # Optionally add supplemental .gypi files if present.
     99   supplements = glob.glob(os.path.join(v8_root, '*', 'supplement.gypi'))
    100   for supplement in supplements:
    101     AddInclude(supplement)
    102 
    103   return result
    104 
    105 
    106 def run_gyp(args):
    107   rc = gyp.main(args)
    108   if rc != 0:
    109     print 'Error running GYP'
    110     sys.exit(rc)
    111 
    112 
    113 if __name__ == '__main__':
    114   args = sys.argv[1:]
    115 
    116   if 'SKIP_V8_GYP_ENV' not in os.environ:
    117     # Update the environment based on v8.gyp_env
    118     gyp_env_path = os.path.join(os.path.dirname(v8_root), 'v8.gyp_env')
    119     apply_gyp_environment(gyp_env_path)
    120 
    121   # This could give false positives since it doesn't actually do real option
    122   # parsing.  Oh well.
    123   gyp_file_specified = False
    124   for arg in args:
    125     if arg.endswith('.gyp'):
    126       gyp_file_specified = True
    127       break
    128 
    129   # If we didn't get a file, check an env var, and then fall back to
    130   # assuming 'all.gyp' from the same directory as the script.
    131   if not gyp_file_specified:
    132     gyp_file = os.environ.get('V8_GYP_FILE')
    133     if gyp_file:
    134       # Note that V8_GYP_FILE values can't have backslashes as
    135       # path separators even on Windows due to the use of shlex.split().
    136       args.extend(shlex.split(gyp_file))
    137     else:
    138       args.append(os.path.join(script_dir, 'all.gyp'))
    139 
    140   args.extend(['-I' + i for i in additional_include_files(args)])
    141 
    142   # There shouldn't be a circular dependency relationship between .gyp files
    143   args.append('--no-circular-check')
    144 
    145   # Set the GYP DEPTH variable to the root of the V8 project.
    146   args.append('--depth=' + v8_root)
    147 
    148   # If V8_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
    149   # to enfore syntax checking.
    150   syntax_check = os.environ.get('V8_GYP_SYNTAX_CHECK')
    151   if syntax_check and int(syntax_check):
    152     args.append('--check')
    153 
    154   print 'Updating projects from gyp files...'
    155   sys.stdout.flush()
    156 
    157   # Generate for the architectures supported on the given platform.
    158   gyp_args = list(args)
    159   gyp_args.append('-Dtarget_arch=ia32')
    160   if utils.GuessOS() == 'linux':
    161     gyp_args.append('-S-ia32')
    162   run_gyp(gyp_args)
    163 
    164   if utils.GuessOS() == 'linux':
    165     gyp_args = list(args)
    166     gyp_args.append('-Dtarget_arch=x64')
    167     gyp_args.append('-S-x64')
    168     run_gyp(gyp_args)
    169 
    170     gyp_args = list(args)
    171     gyp_args.append('-I' + v8_root + '/build/armu.gypi')
    172     gyp_args.append('-S-armu')
    173     run_gyp(gyp_args)
    174 
    175     gyp_args = list(args)
    176     gyp_args.append('-I' + v8_root + '/build/mipsu.gypi')
    177     gyp_args.append('-S-mipsu')
    178     run_gyp(gyp_args)
    179