On 01/30/2018 12:24 AM, Andres Freund wrote:
> Hi,
>
> On 2018-01-30 00:16:46 +0100, Tomas Vondra wrote:
>> FWIW I've installed llvm 5.0.1 from distribution package, and now
>> everything builds fine (I don't even need the configure tweak).
>>
>> I think I had to build the other binaries because there was no 5.x llvm
>> back then, but it's too far back so I don't remember.
>>
>> Anyway, seems I'm fine for now.
>
> Phew, I'm relieved. I'd guess you buily a 5.0 version while 5.0 was
> still in development, so not all 5.0 functionality was available. Hence
> the inconsistent looking result. While I think we can support 4.0
> without too much problem, there's obviously no point in trying to
> support old between releases versions...
>
That's quite possible, but I don't really remember :-/
But I ran into another issue today, where everything builds fine (llvm
5.0.1, gcc 6.4.0), but at runtime I get errors like this:
ERROR:
LLVMCreateMemoryBufferWithContentsOfFile(/home/tomas/pg-llvm/lib/postgresql/llvmjit_types.bc)
failed: No such file or directory
It seems the llvmjit_types.bc file ended up in the parent directory
(/home/tomas/pg-llvm/lib/) for some reason. After simply copying it to
the expected place everything started working.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services