[Scons-users] Python 2.5 vs. Python 2.7

[Rob Boehne]

No, I didn¹t see any replies on the list.  I¹ve been able to make some of
this work with both setups (scons 0.97 w/ Python 2.5 and scons 2.3.6 w/
Python 2.7) by explicitly converting to a python list.
For example:

env[ŒEXCLUDEDOCLET¹] = [a for a in docletenv.Jar(Š)]

As I read the documentation, there¹s a significant effort in the design of
SCons to avoid requiring this sort of conversion.

I¹ve made some progress getting things updated, but eventually gave up on
the idea of using ancient SCons with Python 2.7 and updated to SCons
2.3.x.  Aside from generating a myriad of warnings about deprecated usage,
most of it is working.
It¹s a complex build, using SWIG to generate interfaces form C++ on Mac,
Windows, Linux, AIX, HP-UX and Solaris with native compilers.  It¹s been
working for 8 years in production, but also has been bit rotting for most
of that time, maintained by consultants.

Any insight the Gurus can provide will be appreciated.

Thanks,

Robert Boehne

On 9/23/15, 6:31 AM, "Scons-users on behalf of Russel Winder"
<scons-users-bounces at scons.org on behalf of russel at winder.org.uk> wrote:

>Did anyone get back to you on this?
>
>On Tue, 2015-07-28 at 21:07 +0000, Rob Boehne wrote:
>> Scons users,
>> 
>> I have inherited a large and old SCons build that is virtualenv'd to
>> use Python 2.5 and scons 0.97.
>> I'm *trying* to get it to work in both python 2.5 and 2.7 before
>> updating the version of scons (and other tools) that it uses.
>> Seems trivial, but alas.
>> The snippet below works in Python 2.5, but throws an error in Python
>> 2.7 on the very last line:
>> 
>> # Exclude doclet into Tools jar
>> # See http://java.sun.com/j2se/javadoc/excludedoclet/docs/excludedocl
>> et.html for documentation on this
>> docletenv = env.Clone(JAVACFLAGS='-classpath
>> "$JDKROOT/lib/tools.jar"')
>> excludejava = docletenv.Java('$BUILDDIR/excludedoclet/classes',
>> '#Tools/excludedoclet/src')
>> env['EXCLUDEDOCLET'] = docletenv.Jar('$BUILDDIR/Tools.jar',
>> excludejava, JARCHDIR=excludejava[0].dir.path)
>> 
>> 
>> > scons
>> scons: Reading SConscript files ...
>> scons: Reading SConscript files ...
>> 
>> scons: *** attempted to add a non-Node as source of build\win-x86
>> -32\Debug\Tools.jar:
>>         ['build\\win-x86
>> -32\\Debug\\excludedoclet\\classes\\ExcludeDoclet.class'] is a <class
>> 'SCons.Node.NodeList'>, not a Node
>> File "C:\Users\robb\Development\apdfl-win\DLE\SConstruct", line 1753,
>> in <module>
>> Build completed with status 2
>> 
>> The difference is that the second line produces object "excludejava"
>> as a UserList in Python 2.5, and produces a NodeList in python 2.7,
>> both of length 1.
>> 
>> What would be the safest, most canonical way to rewrite these three
>> lines to make it happy with both interpreters?
>> 
>> Thanks,
>> 
>> Robert Boehne
>> SCons novice
>> _______________________________________________
>> Scons-users mailing list
>> Scons-users at scons.org
>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>-- 
>Russel.
>==========================================================================
>===
>Dr Russel Winder      t: +44 20 7585 2200   voip:
>sip:russel.winder at ekiga.net
>41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at winder.org.uk
>London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
>