Wireshark-dev: Re: [Wireshark-dev] Is Python Still Considered Optional for the Build Process? W
Hi,
Others have to comment on whether we require python or not
but it would be nice if you attached your script to a bug report so we could
have a look at it and have a record of it. I think it should be OK to require
python 2.6 as the lowest supported level to make things
simpler.
Best regards
Anders
Hi, I've taken it upon myself to streamline the build process a little by
using a single Python script for the generation of all registration files
(register.c, all instances of plugin.c, tshark-tap-register.c, and
wireshark-tap-register.c). This new and improved Python script incorporates all
the functionality of four similar but different files that were previously
responsible for this: make-dissector-reg(.py), make-tap-reg.py, and
make-tapreg-dotc. The approach of
the new and improved Python script works well and it benefits the project in a
few ways so I'd like to submit it. Now I wonder if I need to port over the
Python script to an equivalent sh script for build environments lacking Python.
The developer documentation and most of the make scripts imply that Python is
optional. However, Python may
already be mandatory if I understand things correctly, UseMakeDissectorReg.cmake
defines a macro named REGISTER_DISSECTOR_FILES that currently supports only
Python for the generation of register.c and all instances of plugin.c, and
therefore automake scripts depend on Python. But not being familiar enough with the entire build
process, I'm wondering: is Python still optional or is saying so a vestige from
yesteryear? Is it time to re-evaluate Python as a hard prerequisite so we can
avoid implementing things like this twice? Also, I've taken a dependency on Python 2.5 or later by using the "with"
statement (replacing the use of exception frames) when performing file I/O. The
master build scripts appear to support versions 2.4-2.7, so my use of the "with"
statement is a problem for only the earliest supported version--2.4. According
to Wikipedia, Wireshark's supported versions were released as follows:
Python 2.4 - November 30, 2004
Python 2.5 - September 19, 2006
Python 2.6 - October 1, 2008 Python 2.7 - July 3, 2010 Is the Wireshark developer community amenable to upping
our minimum Python version to 2.5 two for the sake of code readability? Or what
about 2.6 which doesn't require using "from __future__ import with_statement"
for "with" statement support? Of
course these changes would apply to Wireshark versions 1.9 and beyond.
Robert Bullen
Network Application
Analysis (NAA)
1 Meridian Crossing
Richfield, MN 55423-3978
Office:
612-973-6216
Email: robert.bullen@xxxxxxxxxx
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