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

   1 """
   2 Compile a Python script into an executable that embeds CPython and run it.
   3 Requires CPython to be built as a shared library ('libpythonX.Y').
   4
   5 Basic usage:
   6
   7     python cythonrun somefile.py [ARGS]
   8 """
   9
  10 DEBUG = True
  11
  12 import sys
  13 import os
  14 from distutils import sysconfig
  15
  16 def get_config_var(name, default=''):
  17     return sysconfig.get_config_var(name) or default
  18
  19 INCDIR = sysconfig.get_python_inc()
  20 LIBDIR1 = get_config_var('LIBDIR')
  21 LIBDIR2 = get_config_var('LIBPL')
  22 PYLIB = get_config_var('LIBRARY')
  23 PYLIB_DYN = get_config_var('LDLIBRARY')
  24 if PYLIB_DYN == PYLIB:
  25     # no shared library
  26     PYLIB_DYN = ''
  27 else:
  28     PYLIB_DYN = os.path.splitext(PYLIB_DYN[3:])[0] # 'lib(XYZ).so' -> XYZ
  29
  30 CC = get_config_var('CC', os.environ.get('CC', ''))
  31 CFLAGS = get_config_var('CFLAGS') + ' ' + os.environ.get('CFLAGS', '')
  32 LINKCC = get_config_var('LINKCC', os.environ.get('LINKCC', CC))
  33 LINKFORSHARED = get_config_var('LINKFORSHARED')
  34 LIBS = get_config_var('LIBS')
  35 SYSLIBS = get_config_var('SYSLIBS')
  36 EXE_EXT = sysconfig.get_config_var('EXE')
  37
  38 def _debug(msg, *args):
  39     if DEBUG:
  40         if args:
  41             msg = msg % args
  42         sys.stderr.write(msg + '\n')
  43
  44 def dump_config():
  45     _debug('INCDIR: %s', INCDIR)
  46     _debug('LIBDIR1: %s', LIBDIR1)
  47     _debug('LIBDIR2: %s', LIBDIR2)
  48     _debug('PYLIB: %s', PYLIB)
  49     _debug('PYLIB_DYN: %s', PYLIB_DYN)
  50     _debug('CC: %s', CC)
  51     _debug('CFLAGS: %s', CFLAGS)
  52     _debug('LINKCC: %s', LINKCC)
  53     _debug('LINKFORSHARED: %s', LINKFORSHARED)
  54     _debug('LIBS: %s', LIBS)
  55     _debug('SYSLIBS: %s', SYSLIBS)
  56     _debug('EXE_EXT: %s', EXE_EXT)
  57
  58 def runcmd(cmd, shell=True):
  59     if shell:
  60         cmd = ' '.join(cmd)
  61         _debug(cmd)
  62     else:
  63         _debug(' '.join(cmd))
  64
  65     try:
  66         import subprocess
  67     except ImportError: # Python 2.3 ...
  68         returncode = os.system(cmd)
  69     else:
  70         returncode = subprocess.call(cmd, shell=shell)
  71
  72     if returncode:
  73         sys.exit(returncode)
  74
  75 def clink(basename):
  76     runcmd([LINKCC, '-o', basename + EXE_EXT, basename+'.o', '-L'+LIBDIR1, '-L'+LIBDIR2]
  77            + [PYLIB_DYN and ('-l'+PYLIB_DYN) or os.path.join(LIBDIR1, PYLIB)]
  78            + LIBS.split() + SYSLIBS.split() + LINKFORSHARED.split())
  79
  80 def ccompile(basename):
  81     runcmd([CC, '-c', '-o', basename+'.o', basename+'.c', '-I' + INCDIR] + CFLAGS.split())
  82
  83 def cycompile(input_file, options=()):
  84     from Cython.Compiler import Version, CmdLine, Main
  85     options, sources = CmdLine.parse_command_line(list(options or ()) + ['--embed', input_file])
  86     _debug('Using Cython %s to compile %s', Version.version, input_file)
  87     result = Main.compile(sources, options)
  88     if result.num_errors > 0:
  89         sys.exit(1)
  90
  91 def exec_file(program_name, args=()):
  92     runcmd([os.path.abspath(program_name)] + list(args), shell=False)
  93
  94 def build(input_file, compiler_args=(), force=False):
  95     """
  96     Build an executable program from a Cython module.
  97
  98     Returns the name of the executable file.
  99     """
 100     basename = os.path.splitext(input_file)[0]
 101     exe_file = basename + EXE_EXT
 102     if not force and os.path.abspath(exe_file) == os.path.abspath(input_file):
 103         raise ValueError("Input and output file names are the same, refusing to overwrite")
 104     if (not force and os.path.exists(exe_file) and os.path.exists(input_file)
 105         and os.path.getmtime(input_file) <= os.path.getmtime(exe_file)):
 106         _debug("File is up to date, not regenerating %s", exe_file)
 107         return exe_file
 108     cycompile(input_file, compiler_args)
 109     ccompile(basename)
 110     clink(basename)
 111     return exe_file
 112
 113 def build_and_run(args):
 114     """
 115     Build an executable program from a Cython module and runs it.
 116
 117     Arguments after the module name will be passed verbatimely to the
 118     program.
 119     """
 120     cy_args = []
 121     last_arg = None
 122     for i, arg in enumerate(args):
 123         if arg.startswith('-'):
 124             cy_args.append(arg)
 125         elif last_arg in ('-X', '--directive'):
 126             cy_args.append(arg)
 127         else:
 128             input_file = arg
 129             args = args[i+1:]
 130             break
 131         last_arg = arg
 132     else:
 133         raise ValueError('no input file provided')
 134
 135     program_name = build(input_file, cy_args)
 136     exec_file(program_name, args)
 137
 138 if __name__ == '__main__':
 139     build_and_run(sys.argv[1:])