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"""
Compile a Python script into an executable that embeds CPython and run it.
Requires CPython to be built as a shared library ('libpythonX.Y').
Basic usage:
python cythonrun somefile.py [ARGS]
"""
from __future__ import absolute_import
DEBUG = True
import sys
import os
from distutils import sysconfig
def get_config_var(name, default=''):
return sysconfig.get_config_var(name) or default
INCDIR = sysconfig.get_python_inc()
LIBDIR1 = get_config_var('LIBDIR')
LIBDIR2 = get_config_var('LIBPL')
PYLIB = get_config_var('LIBRARY')
PYLIB_DYN = get_config_var('LDLIBRARY')
if PYLIB_DYN == PYLIB:
# no shared library
PYLIB_DYN = ''
else:
PYLIB_DYN = os.path.splitext(PYLIB_DYN[3:])[0] # 'lib(XYZ).so' -> XYZ
CC = get_config_var('CC', os.environ.get('CC', ''))
CFLAGS = get_config_var('CFLAGS') + ' ' + os.environ.get('CFLAGS', '')
LINKCC = get_config_var('LINKCC', os.environ.get('LINKCC', CC))
LINKFORSHARED = get_config_var('LINKFORSHARED')
LIBS = get_config_var('LIBS')
SYSLIBS = get_config_var('SYSLIBS')
EXE_EXT = sysconfig.get_config_var('EXE')
def _debug(msg, *args):
if DEBUG:
if args:
msg = msg % args
sys.stderr.write(msg + '\n')
def dump_config():
_debug('INCDIR: %s', INCDIR)
_debug('LIBDIR1: %s', LIBDIR1)
_debug('LIBDIR2: %s', LIBDIR2)
_debug('PYLIB: %s', PYLIB)
_debug('PYLIB_DYN: %s', PYLIB_DYN)
_debug('CC: %s', CC)
_debug('CFLAGS: %s', CFLAGS)
_debug('LINKCC: %s', LINKCC)
_debug('LINKFORSHARED: %s', LINKFORSHARED)
_debug('LIBS: %s', LIBS)
_debug('SYSLIBS: %s', SYSLIBS)
_debug('EXE_EXT: %s', EXE_EXT)
def runcmd(cmd, shell=True):
if shell:
cmd = ' '.join(cmd)
_debug(cmd)
else:
_debug(' '.join(cmd))
try:
import subprocess
except ImportError: # Python 2.3 ...
returncode = os.system(cmd)
else:
returncode = subprocess.call(cmd, shell=shell)
if returncode:
sys.exit(returncode)
def clink(basename):
runcmd([LINKCC, '-o', basename + EXE_EXT, basename+'.o', '-L'+LIBDIR1, '-L'+LIBDIR2]
+ [PYLIB_DYN and ('-l'+PYLIB_DYN) or os.path.join(LIBDIR1, PYLIB)]
+ LIBS.split() + SYSLIBS.split() + LINKFORSHARED.split())
def ccompile(basename):
runcmd([CC, '-c', '-o', basename+'.o', basename+'.c', '-I' + INCDIR] + CFLAGS.split())
def cycompile(input_file, options=()):
from ..Compiler import Version, CmdLine, Main
options, sources = CmdLine.parse_command_line(list(options or ()) + ['--embed', input_file])
_debug('Using Cython %s to compile %s', Version.version, input_file)
result = Main.compile(sources, options)
if result.num_errors > 0:
sys.exit(1)
def exec_file(program_name, args=()):
runcmd([os.path.abspath(program_name)] + list(args), shell=False)
def build(input_file, compiler_args=(), force=False):
"""
Build an executable program from a Cython module.
Returns the name of the executable file.
"""
basename = os.path.splitext(input_file)[0]
exe_file = basename + EXE_EXT
if not force and os.path.abspath(exe_file) == os.path.abspath(input_file):
raise ValueError("Input and output file names are the same, refusing to overwrite")
if (not force and os.path.exists(exe_file) and os.path.exists(input_file)
and os.path.getmtime(input_file) <= os.path.getmtime(exe_file)):
_debug("File is up to date, not regenerating %s", exe_file)
return exe_file
cycompile(input_file, compiler_args)
ccompile(basename)
clink(basename)
return exe_file
def build_and_run(args):
"""
Build an executable program from a Cython module and runs it.
Arguments after the module name will be passed verbatimely to the
program.
"""
cy_args = []
last_arg = None
for i, arg in enumerate(args):
if arg.startswith('-'):
cy_args.append(arg)
elif last_arg in ('-X', '--directive'):
cy_args.append(arg)
else:
input_file = arg
args = args[i+1:]
break
last_arg = arg
else:
raise ValueError('no input file provided')
program_name = build(input_file, cy_args)
exec_file(program_name, args)
if __name__ == '__main__':
build_and_run(sys.argv[1:])
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