New submission from Alan Hourihane:
When building python with static extensions and therefore there are no shared
extensions to be built the extension list can be NULL, and therefore 0 length.
This results in this error....
running build
running build_ext
INFO: Can't locate Tcl/Tk libs and/or headers
Traceback (most recent call last):
File "/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/setup.py",
line 2017, in <module>
main()
File "/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/setup.py",
line 2011, in main
'Lib/smtpd.py']
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/core.py",
line 152, in setup
dist.run_commands()
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/dist.py",
line 953, in run_commands
self.run_command(cmd)
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/dist.py",
line 972, in run_command
cmd_obj.run()
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/command/build.py",
line 127, in run
self.run_command(cmd_name)
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/cmd.py",
line 326, in run_command
self.distribution.run_command(command)
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/dist.py",
line 972, in run_command
cmd_obj.run()
File
"/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Lib/distutils/command/build_ext.py",
line 339, in run
self.build_extensions()
File "/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/setup.py",
line 266, in build_extensions
longest = max([len(e.name) for e in self.extensions])
ValueError: max() arg is an empty sequence
To fix I replaced this line in setup.py
longest = max([len(e.name) for e in self.extensions])
to this...
longest = 0
for e in self.extensions:
longest = max(longest, len(e.name))
----------
components: Build
messages: 200922
nosy: alanh
priority: normal
severity: normal
status: open
title: Build fails when there are no shared extensions to be built
type: compile error
versions: Python 2.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue19346>
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