[Scons-users] scons 3 print syntax change breaks serf build

[Ryan Schmidt]

My apologies; I found it after I sent my message. (I had searched your issue tracker and mailing list, but not commits or pull requests.) Glad it's an easy fix!


> On Sep 27, 2017, at 14:39, Tim Jenness <tjenness at lsst.org> wrote:
> 
> This was fixed last week on master. I don’t know the timeline for a 3.0.1 release.
> 
> See https://github.com/SConsProject/scons/pull/1
> 
> 
>> On Sep 27, 2017, at 12:26 , Ryan Schmidt <scons at ryandesign.com> wrote:
>> 
>> Hello, I'm a developer with the MacPorts package management system.
>> 
>> We've noticed [1] that serf 1.3.8 cannot be built with scons 3.0.0. The error is:
>> 
>> 
>> 
>> File "/path/to/SConstruct", line 181
>>   print 'Unknown variables:', ', '.join(unknown.keys())
>>                            ^
>> SyntaxError: invalid syntax
>> 
>> 
>> 
>> There is no problem building serf 1.3.8 with scons 2.5.1, so this is a regression.
>> 
>> It's as if scons 3 is requiring print to be a function as in python 3, instead of a statement as in python 2, although our scons should still be running with python 2.7. (Perhaps our scons is using python 3 inadvertently -- how would we check for that, and correct it?)
>> 
>> Even your own scons 3 documentation [2] shows a sample SConstruct file with print being used as a statement, and this same error occurring as a result!
>> 
>> I'm assuming this change in the way scons expects print to be used is an unintentional bug...
>> 
>> 
>> [1] https://trac.macports.org/ticket/54915
>> 
>> [2] http://scons.org/doc/3.0.0/HTML/scons-user/ch08s02.html
>> 
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