From 74d6d53ac64e0802fa95f55e8601456fb26016e3 Mon Sep 17 00:00:00 2001
From: Badlop <badlop@process-one.net>
Date: Fri, 10 Jan 2025 21:05:42 +0100
Subject: [PATCH] Container: Add ERL_FLAGS to compile elixir on qemu
 cross-platform

Without this, compiling Elixir on arm64 using QEMU fails with:
 <<"could not call Module.put_attribute/3 because the module ExUnit.DocTest
 is already compiled">>

Solution found in:
  https://elixirforum.com/t/elixir-docker-image-wont-build-for-linux-arm64-v8-using-github-actions/56383/13
---
 .github/container/Dockerfile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/container/Dockerfile b/.github/container/Dockerfile
index 7b502f2c4..f5b5b6d12 100644
--- a/.github/container/Dockerfile
+++ b/.github/container/Dockerfile
@@ -42,6 +42,7 @@ RUN wget -O - https://github.com/elixir-lang/elixir/archive/v$ELIXIR_VSN.tar.gz
         | tar -xzf -
 
 WORKDIR elixir-$ELIXIR_VSN
+ENV ERL_FLAGS="+JPperf true"
 RUN make install clean
 
 RUN mix local.hex --force \