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更新6/25/2013）当我尝试使用pip来安装不同的包时，看到相同的错误，表示该包可能没有任何内容解决这个问题。错误[Errno 89]执行命令时没有执行函数python setup.py egg_info
在QNX我一旦运行pip看到下面的错误。
# pip install -U catkin_pkg
Downloading/unpacking catkin-pkg
Running setup.py egg_info for package catkin-pkg
Requirement already up-to-date: argparse in /usr/pkg/lib/python2.7/site-packages (from catkin-pkg)
Requirement already up-to-date: docutils in /usr/pkg/lib/python2.7/site-packages (from catkin-pkg)
Requirement already up-to-date: python-dateutil in /usr/pkg/lib/python2.7/site-packages (from catkin-pkg)
Requirement already up-to-date: six in /usr/pkg/lib/python2.7/site-packages (from python-dateutil->catkin-pkg)
Installing collected packages: catkin-pkg
Running setup.py install for catkin-pkg
Error [Errno 89] Function not implemented while executing command /usr/qnx650/host/qnx6/x86/usr/bin/python -c "import setuptools;__file__='/tmp/pip-build-n130s/catkin-pkg/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-XhRdBe-record/install-record.txt --single-version-externally-managed
Exception:
Traceback (most recent call last):
File "/usr/pkg/lib/python2.7/site-packages/pip-1.3-py2.7.egg/pip/basecommand.py", line 139, in main
status = self.run(options, args)
File "/usr/pkg/lib/python2.7/site-packages/pip-1.3-py2.7.egg/pip/commands/install.py", line 271, in run
requirement_set.install(install_options, global_options, root=options.root_path)
File "/usr/pkg/lib/python2.7/site-packages/pip-1.3-py2.7.egg/pip/req.py", line 1185, in install
requirement.install(install_options, global_options, *args, **kwargs)
File "/usr/pkg/lib/python2.7/site-packages/pip-1.3-py2.7.egg/pip/req.py", line 592, in install
cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False)
File "/usr/pkg/lib/python2.7/site-packages/pip-1.3-py2.7.egg/pip/util.py", line 627, in call_subprocess
cwd=cwd, env=env)
File "/usr/pkg/lib/python2.7/subprocess.py", line 711, in __init__
errread, errwrite)
File "/usr/pkg/lib/python2.7/subprocess.py", line 1205, in _execute_child
self.pid = os.fork()
OSError: [Errno 89] Function not implemented
Storing complete log in /root/.pip/pip.log
第一次我跑时被依赖组分如，docutils，python-dateutil和six没有安装该命令，相同的错误发生，但在其中，这些部件需要被检查的部分。现在我已经逐一安装了它们，它似乎发生在我正在安装的pkg上（即catkin_pkg）。
在python的控制台上，os.fork()，我假设原因的来源，行为有所不同。因此我甚至不确定错误是否发生在os.fork()。
# python
Python 2.7.4 (default, Jun 21 2013, 22:33:48)
[GCC 4.4.2] on qnx6
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.fork()
18804790
>>> 0
sem_wait: Invalid argument
如何避免此错误？谢谢！
使用QNX 6.5.0 SDP SP1,pip版本是1.3（its source on github），也是source of catkin_pkg。