`proj_nif` - a simple Erlang NIF wrapper for the proj C library
=====

https://hex.pm/packages/proj_nif

Requirements
-----

You need [Proj](https://proj.org/) (9.1.0) and Erlang. The attached
`default.nix` file contains a [Nix](https://nixos.org/) definition to
make your dev experience simpler.

Build
-----

    $ rebar3 compile

Shell
-----

    $ rebar3 shell
    
Inside the shell you can run test code with:

    c(test).
    test:run().
    
This should run without errors.

Elixir
-----

There is also possibility to build an Elixir NIF. Just run

    $ mix compile
    
and the `priv/lib/libproj_nif_ex.so` file will be generated. The module's
name is `Elixir.ProjNif`.

You can run the sample inside Elixir repl (`iex -S mix`) as follows:

    c "test.exs"
    ProjNif.Test.run()