> On Dec 29, 2018, at 8:03 PM, Ravindra Pindikura <ravin...@dremio.com> wrote:
> 
> 
> 
>> On Dec 28, 2018, at 1:38 AM, Wes McKinney <wesmck...@gmail.com> wrote:
>> 
>> You might have to wait for Antoine's help after the holidays. In the
>> meantime: do you get the error when building both with gcc 4.8/4.9 and
>> clang-6.0? I did a bit of google searching and it seems that iostream
>> is a common troublemaker for LLVM. I wonder if the code can be
>> refactored to avoid using std::cout
> 
> Thanks Wes.
> 
> I’ll wait for Antoine. In the meanwhile, I’ll work on the refactoring, just 
> in case.

Antoine, 

Can you please give your opinion on this ? I’ve hit this with java and python. 
Fairly sure it’ll be a problem on windows too.

Should I just break down arrow/util/decimal.cc <http://decimal.cc/>  into two 
parts : one that works with llvm ir (no iostream), and the remaining

Thanks & regards,
ravindra.

> 
> 
>> 
>> On Thu, Dec 27, 2018 at 3:56 AM Ravindra Pindikura <ravin...@dremio.com> 
>> wrote:
>>> 
>>> Thanks Wes, that worked.
>>> 
>>> When I run the gandiva tests (I did a step-through with pdb), I get this 
>>> error :
>>> 
>>>> /home/ravindra/git/arrow/python/pyarrow/tests/test_gandiva.py(50)test_tree_exp_builder()
>>> -> schema, [expr], pa.default_memory_pool())
>>> (Pdb)
>>> LLVM ERROR: Program used external function '_ZNSt8ios_base4InitC1Ev' which 
>>> could not be resolved!
>>> 
>>> I had hit the same issue with java/jni, and resolved it by doing a 
>>> NativeLibrary.getInstance() (thanks to @pitrou). My knowledge of python is 
>>> limited - can someone please help with the same for python ?
>>> 
>>> Thanks & regards,
>>> ravindra.
>>> 
>>>> On Dec 26, 2018, at 7:55 PM, Wes McKinney <wesmck...@gmail.com> wrote:
>>>> 
>>>> hi Ravindra,
>>>> 
>>>> If you are using Anaconda, you need to use the conda instructions for
>>>> environment setup instead of virtualenv. This should be called out
>>>> more prominently in a warning in the docs
>>>> 
>>>> - Wes
>>>> 
>>>> On Tue, Dec 25, 2018 at 12:53 PM Ravindra Pindikura <ravin...@dremio.com> 
>>>> wrote:
>>>>> 
>>>>> Hi,
>>>>> 
>>>>> My change (decimal support in gandiva) causes a CI failure in python 
>>>>> test_gandiva.py
>>>>> 
>>>>> https://travis-ci.org/apache/arrow/jobs/471874254#L7167
>>>>> 
>>>>> However, the travis log has no further information on the failure.
>>>>> 
>>>>> To debug this, I tried setting up a python dev environment on ubuntu 14  
>>>>> using the steps in 
>>>>> https://github.com/apache/arrow/blob/master/docs/source/python/development.rst
>>>>> 
>>>>> I got stuck at this (virtualenv pyarrow):
>>>>> 
>>>>> ValueError: failed to parse CPython sys.version: '3.6.7 |Anaconda, Inc.| 
>>>>> (default, Oct 23 2018, 19:19:38) \n[GCC 7.3.0]'
>>>>> 
>>>>> 
>>>>> Is this a known issue ? Any workaround ?
>>>>> 
>>>>> Thanks & regards,
>>>>> Ravindra.
>>>>> 
>>>>> 
>>> 
> 

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