[Scons-users] env.MergeFlags does not accept dict CPPDEFINES

Bill Deegan bill at baddogconsulting.com
Thu Jul 13 14:04:42 EDT 2017

And of course.. if the spirit moves you, a pull request with updated test..


On Thu, Jul 13, 2017 at 12:58 PM, Dirk Bächle <tshortik at gmx.de> wrote:

> Olivier,
> On 13.07.2017 18:18, Olivier Renaud wrote:
>> Thanks for the quick reply.
>> I'm afraid I did not search the bugtracker before sending my mail, sorry
>> about that.
> don't worry, thanks for verifying that it's indeed the same issue. Would
> you be able to add your "syntax examples" to one of the main issues? Then
> we could probably use them as starting point when defining proper tests and
> the intended behaviour in detail for each of the possible combinations.
> Indeed, the issues you linked to are all various symptoms of the same
>> underlying issue, and my report does not bring anything new. I'm working
>> around the issue by merging the offending CPPDEFINES with custom code, and
>> then merging the rest of the flags with MergeFlags.
>> Though, this unexpected behavior took me a few hours to track down (it
>> did not result in an exception, but in a duplication of the /D flags in the
>> compiler command), and it seems to be easy to run into. May I suggest the
>> MergeFlags method perform a few basic type checks on its input, and at
>> least report any unsupported operation as a warning?
> That's a good idea. Again, it would help the project a lot if you could
> find the time and add a corresponding note with this request directly to
> the issue in the Tigris bug tracker. Thanks a lot in advance for that.
> Best regards,
> Dirk
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