CODEWITHSUNDEEP
erlangelixirphoenix-framework
Shirraz
Shirraz

Reputation: 302

Elixir not finding erlang library

I'm getting back at an old phoenix project I stopped working on 3 years ago. While trying to compile it, I keep having an error I couldn't resolve for the whole afternoon.

== Compilation error in file lib/mppm/game_server/server_config.ex ==
** (ArgumentError) lib file xmerl-2.0/include/xmerl.hrl could not be found
    (elixir 1.17.2) lib/record/extractor.ex:41: Record.Extractor.from_lib_file/1
    (elixir 1.17.2) lib/record/extractor.ex:18: Record.Extractor.from_or_from_lib_file/1
    (elixir 1.17.2) lib/record/extractor.ex:5: Record.Extractor.extract/2
    lib/mppm/game_server/server_config.ex:9: (module)

With the culprit line being:

      defrecord(:xmlElement, extract(:xmlElement, from_lib: "xmerl/include/xmerl.hrl"))

I installed both Elixir (1.17) and Erlang/OTP (27.0.1) with asdf. I've checked the path where erlang libraries are (.asdf/installs/erlang/27.0.1/lib/). "xmerl" appears as "xmerl-2.0" so I tried correcting it, no luck. I tried absolute path and quite everything, including naively removing the from_lib argument, still no luck.

What am I missing here? I'm sure it's dumb, but I've been stuck for hours...

Thank you!

Upvotes: 1

Views: 155

Answers (1)

Aleksei Matiushkin
Aleksei Matiushkin

Reputation: 121000

Since v1.15, compiler prunes code pathes if it does not see them needed. core suffers from that.

Add the following line into project/0 callback of your mix.exs.

def project do
  [
    …
    prune_code_paths: Mix.env() == :prod,
    …
  ]

Upvotes: 3

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