[erlang-questions] NIFS

[Karlo Kuna]

also
ldd -r my.so
gives:
undefined symbol: _ZNSt8ios_base4InitD1Ev
undefined symbol: enif_make_atom
undefined symbol: _ZNSt8ios_base4InitC1Ev



On Sun, Feb 5, 2017 at 6:48 AM, Karlo Kuna <kuna.prime@REDACTED> wrote:

> now i'm getting:
> undefined symbol: _ZNSt8ios_base4InitD1Ev
>
>
>
> On Sat, Feb 4, 2017 at 11:45 PM, Stanislaw Klekot <erlang.org@REDACTED>
> wrote:
>
>> On Sat, Feb 04, 2017 at 11:25:33PM +0100, Karlo Kuna wrote:
>> > i am using c++ to implement nif module
>> > and i am using nifpp (https://github.com/goertzenator/nifpp)
>> >
>> > now i can compile my project but on function call i get:
>> >
>> > Failed to load NIF library: my.so undefined symbol:
>> > _ZTVN10__cxxabiv117__class_type_infoE
>> >
>> > can someone give me a hint what is this error?  is it linkage, or bad
>> call,
>> > or something else
>> > and how go about solving it?
>>
>> It's because of name mangling by C++ compiler (necessary thing for
>> overloaded functions to work). It's a totally expected problem when
>> you're writing in C++ a library that needs to be used by system written
>> in C. You need to disable name mangling for your NIF function.
>>
>> --
>> Stanislaw Klekot
>>
>
>
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