diff options
Diffstat (limited to 'setup.py')
| -rw-r--r-- | setup.py | 60 |
1 files changed, 60 insertions, 0 deletions
@@ -10,6 +10,61 @@ import sys import sysconfig from glob import glob + +try: + import subprocess + del subprocess + SUBPROCESS_BOOTSTRAP = False +except ImportError: + SUBPROCESS_BOOTSTRAP = True + + # Bootstrap Python: distutils.spawn uses subprocess to build C extensions, + # subprocess requires C extensions built by setup.py like _posixsubprocess. + # + # Basic subprocess implementation for POSIX (setup.py is not used on + # Windows) which only uses os functions. Only implement features required + # by distutils.spawn. + # + # It is dropped from sys.modules as soon as all C extension modules + # are built. + class Popen: + def __init__(self, cmd, env=None): + self._cmd = cmd + self._env = env + self.returncode = None + + def wait(self): + pid = os.fork() + if pid == 0: + # Child process + try: + if self._env is not None: + os.execve(self._cmd[0], self._cmd, self._env) + else: + os.execv(self._cmd[0], self._cmd) + finally: + os._exit(1) + else: + # Parent process + pid, status = os.waitpid(pid, 0) + if os.WIFSIGNALED(status): + self.returncode = -os.WTERMSIG(status) + elif os.WIFEXITED(status): + self.returncode = os.WEXITSTATUS(status) + elif os.WIFSTOPPED(status): + self.returncode = -os.WSTOPSIG(sts) + else: + # Should never happen + raise Exception("Unknown child exit status!") + + return self.returncode + + mod = type(sys)('subprocess') + mod.Popen = Popen + sys.modules['subprocess'] = mod + del mod + + from distutils import log from distutils.command.build_ext import build_ext from distutils.command.build_scripts import build_scripts @@ -391,6 +446,11 @@ class PyBuildExt(build_ext): build_ext.build_extensions(self) + if SUBPROCESS_BOOTSTRAP: + # Drop our custom subprocess module: + # use the newly built subprocess module + del sys.modules['subprocess'] + for ext in self.extensions: self.check_extension_import(ext) |