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Re: Weird symbol resolution error with llvm JIT in gandiva jni


Does the static gandiva lib bundle libstdc++? Otherwise you'll probably
need to load it explicitly in the Java process.

Regards

Antoine.


Le 16/12/2018 à 04:53, Ravindra Pindikura a écrit :
> I think this happens if any of the cpp files that are used for IR generation (clang —emit-llvm) includes <iostream>. For decimal support, I’m generating IR code from arrow/util/decimal.cc <http://decimal.cc/> which includes <iostream> (many times in the header file chain).
> 
>> On Dec 16, 2018, at 9:14 AM, Ravindra Pindikura <ravindra@xxxxxxxxxx> wrote:
>>
>> Hi,
>>
>> I’ve been working on adding decimal support in gandiva - I’m hitting a symbol resolution error with std::ios_base::Init with the java tests on ubuntu. Any ideas on what I may be doing wrong ?
>>
>> LLVM ERROR: Program used external function '_ZNSt8ios_base4InitC1Ev' which could not be resolved!
>>
>>
>> I’ve the same test (add two decimals) in three forms : 
>>
>> 1. Cpp test executable with shared gandiva lib
>>
>> Works on both ubuntu and Mac
>>
>> 2. Cpp test executable with static gandiva lib
>>
>> Works on both ubuntu and Mac
>>
>> 3. Java test (internally uses jni over static gandiva lib)
>>
>> Works on Mac, but fails on ubuntu !!
>>
>> Ubuntu failure : https://travis-ci.org/apache/arrow/jobs/468562791
>>
>> I tried switching to ORC JIT (from MC JIT) but that didn’t help. In the JIT, the symbol is not found in the process address space for ubuntu+java. For all the other cases, the symbol is found.
>>
>> https://github.com/apache/arrow/pull/2942/files#diff-5ef29a5cabe384645dbf7a9c704aceeaR36
>>
>> Thanks & regards,
>> Ravindra.
> 
>