rebar3 not finding jsonx module | Elixir Language | Page 1

modern willow Sep 25, 2022, 3:18 PM

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Hello,

I am building an erlang app with rebar using jsonx module, but it seems my application can't find it.

when I execute the following code:

jsonx:decode(<<"{\"name\":\"Ivan\",\"age\":33,\"phones\":[3332211,4443322]}">>)

I get this error:

2022-09-25T17:01:32.226101+03:00 error: Error in process <0.192.0> with exit value:, {{badmatch,{error,{load_failed,"Failed to load NIF library: '/home/ivelin/Desktop/auth_app/app/_build/default/lib/jsonx/priv/jsonx.so: cannot open shared object file: No such file or directory'"}}},[{jsonx,init,0,[{file,"/home/ivelin/Desktop/auth_app/app/_build/default/lib/jsonx/src/jsonx.erl"},{line,232}]},{code_server,'-handle_on_load/5-fun-0-',1,[{file,"code_server.erl"},{line,1340}]}]}

rebar.config

{erl_opts, [debug_info]}.
{deps, [
  {cowboy, {git, "https://github.com/ninenines/cowboy.git"}},
  {jsonx, ".*", {git, "https://github.com/iskra/jsonx.git"}}
]}.

{shell, [
  % {config, "config/sys.config"},
    {apps, [app]}
]}.

my app.src

{application, app,
 [{description, "An OTP application"},
  {vsn, "0.1.0"},
  {registered, []},
  {mod, {app_app, []}},
  {applications,
   [kernel,
    stdlib,
    cowboy,
    jsonx
   ]},
  {env,[]},
  {modules, []},

  {licenses, ["Apache 2.0"]},
  {links, []}
 ]}.

Why do I get this error ? How can I fix it ?

alpine bear Sep 25, 2022, 6:02 PM

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idk but it says nif lib cudnt be loaded. im not familiar with erlang, but does ur system has C installed in it? if not try installing and redo c if that changes things

modern willow Sep 25, 2022, 7:03 PM

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My system doesn't recognize redo command

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Here's the full error

alpine bear Sep 25, 2022, 7:51 PM

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do u have C installed?

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and did u load the nif? erlang:load_nif(...)?

modern willow Sep 25, 2022, 8:53 PM

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alpine bear do u have C installed?

I have gcc installed and the build-essentials package

modern willow Sep 25, 2022, 8:54 PM

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alpine bear and did u load the nif? erlang:load_nif(...)?

I really have no idea what's that

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http://erlang.org/documentation/doc-7.0/erts-7.0/doc/html/erlang.html#load_nif-2

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Path ; Load_Info ?

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What should I put in the Path parameter ?

alpine bear Sep 25, 2022, 8:57 PM

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lemme take a look gimmi a sec

alpine bear Sep 25, 2022, 9:38 PM

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sorry not an erlang guy but u might wanna check this out

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https://stackoverflow.com/questions/29845783/failed-to-load-nif-library

Stack Overflow

Failed to load NIF library

I created a DLL "Addition.dll" where i implemented hello function
These are the file that i used for the creation of the library:
main.cpp:

#include "main.h"

//Hello function
static ERL_NIF_TERM

#

the best i got is- use messagepack instead

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sorry

modern willow Sep 25, 2022, 9:55 PM

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alpine bear the best i got is- use messagepack instead

Thank you. I'll get in it deeper later today

alpine bear Sep 25, 2022, 9:56 PM

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if u find something lemme know

modern willow Sep 26, 2022, 8:55 AM

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Nothing yet

#rebar3 not finding jsonx module