[Haskell-cafe] Linking + zstd on FreeBSD

[Brandon Allbery]

I can think of a few more possibilities. Has anyone checked whether
the RTS symbol is, say, conditional on non-glibc?

On 7/9/20, Carter Schonwald <carter.schonwald at gmail.com> wrote:
> That’s a really good question!
>
> I guess one way to narrow it down is what’s the  linker implementation on
> each env? I think you can arrange to use the same ld impl on bsd and Linux
> if you want, since both are elf platforms.  Are they both doing dynamic or
> static linking? Are they using the same Ld implementation?  It’s certainly
> strange to have there be a difference in behavior between two x64 elf
> platforms,
>
> On Thu, Jul 9, 2020 at 8:31 AM Vanessa McHale <vamchale at gmail.com> wrote:
>
>> Fair enough, I suppose what I don't understand is: why is this only
>> happening on FreeBSD (in Vagrant)? I am able to compile on Linux, Mac,
>> and
>> Windows!
>>
>> Cheers,
>> Vanessa McHale
>> On 7/8/20 5:33 PM, Carter Schonwald wrote:
>>
>> When binding c libraries, I often prefix a custom/unique Descriptive
>> sequence  for All linker visible symbols.
>>
>> So Eg you could do vanmach_zstdlib_ as a prefix
>>
>> On Tue, Jun 30, 2020 at 12:32 PM Jinwoo Lee <jinwoo68 at gmail.com> wrote:
>>
>>> The error message seems to say why. The GHC RTS already has xxhash.c and
>>> zstd also has that file. I'm not sure how to resolve this though.
>>>
>>>
>>> On Mon, Jun 29, 2020 at 7:44 AM Vanessa McHale <vamchale at gmail.com>
>>> wrote:
>>>
>>>> I tried linking against zstd within a Vagrant simulating FreeBSD. I get
>>>> the following:
>>>>
>>>> ld: error: duplicate symbol: XXH64
>>>> >>> defined at xxhash.c
>>>> >>>            xxhash.o:(XXH64) in archive
>>>>
>>>> /home/vagrant/.cabal/store/ghc-8.8.3/zstd-0.1.2.0-c8ee757c8e8a7307779ab3cfbc91f3445940e16bbf8f9916f4c90432a0ac499e/lib/libHSzstd-0.1.2.0-c8ee757c8e8a7307779ab3cfbc91f3445940e16bbf8f9916f4c90432a0ac499e.a
>>>> >>> defined at xxhash.c:693
>>>> (/wrkdirs/usr/ports/lang/ghc/work/ghc-8.8.3/rts/xxhash.c:693)
>>>> >>>            RTS.o:(.text.XXH64+0x0) in archive
>>>> /usr/local/lib/ghc-8.8.3/rts/libHSrts.a
>>>>
>>>> ...
>>>>
>>>> I am using GHC version 8.8.3_1 and cabal-install 3.0 installed by 'sudo
>>>> pkg install ...'
>>>>
>>>> (I was trying to run cabal install language-dickinson)
>>>>
>>>> Cheers,
>>>> Vanessa McHale
>>>>
>>>>
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-- 
brandon s allbery kf8nh
allbery.b at gmail.com