mirror of https://github.com/python/cpython
Merge 3.3 (#11599)
This commit is contained in:
Éric Araujo
commit
f1e8c70cf0
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@ -685,6 +685,8 @@ include the following code fragment in your :file:`setup.py` before the
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DistributionMetadata.download_url = None
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.. _debug-setup-script:
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Debugging the setup script
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==========================
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@ -700,7 +702,8 @@ installation is broken because they don't read all the way down to the bottom
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and see that it's a permission problem.
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On the other hand, this doesn't help the developer to find the cause of the
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failure. For this purpose, the DISTUTILS_DEBUG environment variable can be set
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failure. For this purpose, the :envvar:`DISTUTILS_DEBUG` environment variable can be set
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to anything except an empty string, and distutils will now print detailed
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information what it is doing, and prints the full traceback in case an exception
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occurs.
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information about what it is doing, dump the full traceback when an exception
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occurs, and print the whole command line when an external program (like a C
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compiler) fails.
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@ -58,7 +58,8 @@ new goodies to their toolbox. You don't need to know Python to read this
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document; there will be some brief forays into using Python's interactive mode
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to explore your installation, but that's it. If you're looking for information
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on how to distribute your own Python modules so that others may use them, see
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the :ref:`distutils-index` manual.
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the :ref:`distutils-index` manual. :ref:`debug-setup-script` may also be of
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interest.
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.. _inst-trivial-install:
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@ -10,6 +10,7 @@ import sys
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import os
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from distutils.errors import DistutilsPlatformError, DistutilsExecError
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from distutils.debug import DEBUG
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from distutils import log
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def spawn(cmd, search_path=1, verbose=0, dry_run=0):
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@ -28,10 +29,15 @@ def spawn(cmd, search_path=1, verbose=0, dry_run=0):
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Raise DistutilsExecError if running the program fails in any way; just
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return on success.
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"""
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# cmd is documented as a list, but just in case some code passes a tuple
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# in, protect our %-formatting code against horrible death
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cmd = list(cmd)
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if os.name == 'posix':
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_spawn_posix(cmd, search_path, dry_run=dry_run)
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elif os.name == 'nt':
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_spawn_nt(cmd, search_path, dry_run=dry_run)
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elif os.name == 'os2':
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_spawn_os2(cmd, search_path, dry_run=dry_run)
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else:
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raise DistutilsPlatformError(
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"don't know how to spawn programs on platform '%s'" % os.name)
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@ -65,12 +71,16 @@ def _spawn_nt(cmd, search_path=1, verbose=0, dry_run=0):
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rc = os.spawnv(os.P_WAIT, executable, cmd)
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except OSError as exc:
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# this seems to happen when the command isn't found
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"command '%s' failed: %s" % (cmd[0], exc.args[-1]))
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"command %r failed: %s" % (cmd, exc.args[-1]))
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if rc != 0:
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# and this reflects the command running but failing
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"command '%s' failed with exit status %d" % (cmd[0], rc))
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"command %r failed with exit status %d" % (cmd, rc))
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if sys.platform == 'darwin':
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from distutils import sysconfig
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@ -81,8 +91,9 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
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log.info(' '.join(cmd))
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if dry_run:
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return
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executable = cmd[0]
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exec_fn = search_path and os.execvp or os.execv
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exec_args = [cmd[0], cmd]
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env = None
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if sys.platform == 'darwin':
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global _cfg_target, _cfg_target_split
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if _cfg_target is None:
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@ -103,17 +114,23 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
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env = dict(os.environ,
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MACOSX_DEPLOYMENT_TARGET=cur_target)
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exec_fn = search_path and os.execvpe or os.execve
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exec_args.append(env)
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pid = os.fork()
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if pid == 0: # in the child
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try:
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exec_fn(*exec_args)
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if env is None:
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exec_fn(executable, cmd)
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else:
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exec_fn(executable, cmd, env)
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except OSError as e:
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sys.stderr.write("unable to execute %s: %s\n"
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% (cmd[0], e.strerror))
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if not DEBUG:
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cmd = executable
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sys.stderr.write("unable to execute %r: %s\n"
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% (cmd, e.strerror))
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os._exit(1)
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sys.stderr.write("unable to execute %s for unknown reasons" % cmd[0])
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if not DEBUG:
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cmd = executable
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sys.stderr.write("unable to execute %r for unknown reasons" % cmd)
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os._exit(1)
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else: # in the parent
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# Loop until the child either exits or is terminated by a signal
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@ -125,26 +142,34 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
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import errno
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if exc.errno == errno.EINTR:
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continue
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"command '%s' failed: %s" % (cmd[0], exc.args[-1]))
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"command %r failed: %s" % (cmd, exc.args[-1]))
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if os.WIFSIGNALED(status):
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"command '%s' terminated by signal %d"
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% (cmd[0], os.WTERMSIG(status)))
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"command %r terminated by signal %d"
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% (cmd, os.WTERMSIG(status)))
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elif os.WIFEXITED(status):
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exit_status = os.WEXITSTATUS(status)
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if exit_status == 0:
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return # hey, it succeeded!
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else:
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"command '%s' failed with exit status %d"
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% (cmd[0], exit_status))
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"command %r failed with exit status %d"
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% (cmd, exit_status))
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elif os.WIFSTOPPED(status):
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continue
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else:
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if not DEBUG:
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cmd = executable
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raise DistutilsExecError(
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"unknown error executing '%s': termination status %d"
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% (cmd[0], status))
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"unknown error executing %r: termination status %d"
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% (cmd, status))
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def find_executable(executable, path=None):
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"""Tries to find 'executable' in the directories listed in 'path'.
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@ -23,6 +23,10 @@ Library
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- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
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in ipaddress.
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- Issue #11599: When an external command (e.g. compiler) fails, distutils now
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prints out the whole command line (instead of just the command name) if the
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environment variable DISTUTILS_DEBUG is set.
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- Issue #4931: distutils should not produce unhelpful "error: None" messages
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anymore. distutils.util.grok_environment_error is kept but doc-deprecated.
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