src/third_party/cython/src/Cython/Build/Cythonize.py

   1 #!/usr/bin/env python
   2
   3 import os
   4 import shutil
   5 import tempfile
   6
   7 from distutils.core import setup
   8 from Cython.Build.Dependencies import cythonize, extended_iglob
   9 from Cython.Utils import is_package_dir
  10 from Cython.Compiler import Options
  11
  12 try:
  13     import multiprocessing
  14     parallel_compiles = int(multiprocessing.cpu_count() * 1.5)
  15 except ImportError:
  16     multiprocessing = None
  17     parallel_compiles = 0
  18
  19
  20 class _FakePool(object):
  21     def map_async(self, func, args):
  22         from itertools import imap
  23         for _ in imap(func, args):
  24             pass
  25
  26     def close(self): pass
  27     def terminate(self): pass
  28     def join(self): pass
  29
  30
  31 def parse_directives(option, name, value, parser):
  32     dest = option.dest
  33     old_directives = dict(getattr(parser.values, dest,
  34                                   Options.directive_defaults))
  35     directives = Options.parse_directive_list(
  36         value, relaxed_bool=True, current_settings=old_directives)
  37     setattr(parser.values, dest, directives)
  38
  39
  40 def parse_options(option, name, value, parser):
  41     dest = option.dest
  42     options = dict(getattr(parser.values, dest, {}))
  43     for opt in value.split(','):
  44         if '=' in opt:
  45             n, v = opt.split('=', 1)
  46             v = v.lower() not in ('false', 'f', '0', 'no')
  47         else:
  48             n, v = opt, True
  49         options[n] = v
  50     setattr(parser.values, dest, options)
  51
  52
  53 def find_package_base(path):
  54     base_dir, package_path = os.path.split(path)
  55     while os.path.isfile(os.path.join(base_dir, '__init__.py')):
  56         base_dir, parent = os.path.split(base_dir)
  57         package_path = '%s/%s' % (parent, package_path)
  58     return base_dir, package_path
  59
  60
  61 def cython_compile(path_pattern, options):
  62     pool = None
  63     paths = map(os.path.abspath, extended_iglob(path_pattern))
  64     try:
  65         for path in paths:
  66             if options.build_inplace:
  67                 base_dir = path
  68                 while not os.path.isdir(base_dir) or is_package_dir(base_dir):
  69                     base_dir = os.path.dirname(base_dir)
  70             else:
  71                 base_dir = None
  72
  73             if os.path.isdir(path):
  74                 # recursively compiling a package
  75                 paths = [os.path.join(path, '**', '*.%s' % ext)
  76                          for ext in ('py', 'pyx')]
  77             else:
  78                 # assume it's a file(-like thing)
  79                 paths = [path]
  80
  81             ext_modules = cythonize(
  82                 paths,
  83                 nthreads=options.parallel,
  84                 exclude_failures=options.keep_going,
  85                 exclude=options.excludes,
  86                 compiler_directives=options.directives,
  87                 force=options.force,
  88                 quiet=options.quiet,
  89                 **options.options)
  90
  91             if ext_modules and options.build:
  92                 if len(ext_modules) > 1 and options.parallel > 1:
  93                     if pool is None:
  94                         try:
  95                             pool = multiprocessing.Pool(options.parallel)
  96                         except OSError:
  97                             pool = _FakePool()
  98                     pool.map_async(run_distutils, [
  99                         (base_dir, [ext]) for ext in ext_modules])
 100                 else:
 101                     run_distutils((base_dir, ext_modules))
 102     except:
 103         if pool is not None:
 104             pool.terminate()
 105         raise
 106     else:
 107         if pool is not None:
 108             pool.close()
 109             pool.join()
 110
 111
 112 def run_distutils(args):
 113     base_dir, ext_modules = args
 114     script_args = ['build_ext', '-i']
 115     cwd = os.getcwd()
 116     temp_dir = None
 117     try:
 118         if base_dir:
 119             os.chdir(base_dir)
 120             temp_dir = tempfile.mkdtemp(dir=base_dir)
 121             script_args.extend(['--build-temp', temp_dir])
 122         setup(
 123             script_name='setup.py',
 124             script_args=script_args,
 125             ext_modules=ext_modules,
 126         )
 127     finally:
 128         if base_dir:
 129             os.chdir(cwd)
 130             if temp_dir and os.path.isdir(temp_dir):
 131                 shutil.rmtree(temp_dir)
 132
 133
 134 def parse_args(args):
 135     from optparse import OptionParser
 136     parser = OptionParser(usage='%prog [options] [sources and packages]+')
 137
 138     parser.add_option('-X', '--directive', metavar='NAME=VALUE,...', dest='directives',
 139                       type=str, action='callback', callback=parse_directives, default={},
 140                       help='set a compiler directive')
 141     parser.add_option('-s', '--option', metavar='NAME=VALUE', dest='options',
 142                       type=str, action='callback', callback=parse_options, default={},
 143                       help='set a cythonize option')
 144     parser.add_option('-3', dest='python3_mode', action='store_true',
 145                       help='use Python 3 syntax mode by default')
 146
 147     parser.add_option('-x', '--exclude', metavar='PATTERN', dest='excludes',
 148                       action='append', default=[],
 149                       help='exclude certain file patterns from the compilation')
 150
 151     parser.add_option('-b', '--build', dest='build', action='store_true',
 152                       help='build extension modules using distutils')
 153     parser.add_option('-i', '--inplace', dest='build_inplace', action='store_true',
 154                       help='build extension modules in place using distutils (implies -b)')
 155     parser.add_option('-j', '--parallel', dest='parallel', metavar='N',
 156                       type=int, default=parallel_compiles,
 157                       help=('run builds in N parallel jobs (default: %d)' %
 158                             parallel_compiles or 1))
 159     parser.add_option('-f', '--force', dest='force', action='store_true',
 160                       help='force recompilation')
 161     parser.add_option('-q', '--quiet', dest='quiet', action='store_true',
 162                       help='be less verbose during compilation')
 163
 164     parser.add_option('--lenient', dest='lenient', action='store_true',
 165                       help='increase Python compatibility by ignoring some compile time errors')
 166     parser.add_option('-k', '--keep-going', dest='keep_going', action='store_true',
 167                       help='compile as much as possible, ignore compilation failures')
 168
 169     options, args = parser.parse_args(args)
 170     if not args:
 171         parser.error("no source files provided")
 172     if options.build_inplace:
 173         options.build = True
 174     if multiprocessing is None:
 175         options.parallel = 0
 176     if options.python3_mode:
 177         options.options['language_level'] = 3
 178     return options, args
 179
 180
 181 def main(args=None):
 182     options, paths = parse_args(args)
 183
 184     if options.lenient:
 185         # increase Python compatibility by ignoring compile time errors
 186         Options.error_on_unknown_names = False
 187         Options.error_on_uninitialized = False
 188
 189     for path in paths:
 190         cython_compile(path, options)
 191
 192
 193 if __name__ == '__main__':
 194     main()