Missing Erlang Header Files

[zmackie]

I'm getting the following error when I compile on a RaspberryPi 2B:

warning: the VM is running with native name encoding of latin1 which may cause Elixir to malfunction as it expects utf8. Please ensure your locale is set to UTF-8 (which can be verified by running "locale" in your shell)
Makefile:17: *** Could not find include directory for ei.h. Check that Erlang header files are available.  Stop.
** (MatchError) no match of right hand side value: 2
    mix.exs:4: Mix.Tasks.Compile.ElixirAle.run/1
    (elixir) lib/enum.ex:1043: anonymous fn/3 in Enum.map/2
    (elixir) lib/enum.ex:1387: Enum."-reduce/3-lists^foldl/2-0-"/3
    (elixir) lib/enum.ex:1043: Enum.map/2
    (mix) lib/mix/tasks/compile.all.ex:19: anonymous fn/1 in Mix.Tasks.Compile.All.run/1
    (mix) lib/mix/tasks/compile.all.ex:37: Mix.Tasks.Compile.All.with_logger_app/1
    (mix) lib/mix/tasks/compile.ex:64: Mix.Tasks.Compile.run/1
    (mix) lib/mix/cli.ex:55: Mix.CLI.run_task/2

Probably related to #https://github.com/nerves-project/nerves-toolchain/issues/3 . I'll investigate further...

[fhunleth]

If I remember right, on Raspberry Pi this is due to not installing the erlang package with the header files. Maybe sudo apt-get install erlang-dev? Could you check if ei.h exists on your system?

[zmackie]

Indeed I looked and ei.h isn't there. I'll try some other installation options and report findings.
UPDATE: I built erlang from source per http://elinux.org/Erlang and that succeeded.

[zmackie]

I left a small PR with a note in the readme on my solution to this issue (#12).

[fhunleth]

I merged the PR. Thanks for sending it.