support elixir_make pre-compiler API

lib/zig_precompiler.ex

@@ -0,0 +1,25 @@
+defmodule Kinda.Precompiler do
+  @behaviour ElixirMake.Precompiler
+
+  @impl true
+  def current_target, do: RustlerPrecompiled.target()
+
+  @impl true
+  def all_supported_targets(_), do: ~w(
+    aarch64-apple-darwin
+    x86_64-unknown-linux-gnu
+  )
+
+  @impl true
+  def build_native(args) do
+    {:ok, t} = current_target()
+    System.put_env("KINDA_NIF_TARGET", t)
+    ElixirMake.Compiler.compile(args)
+  end
+
+  @impl true
+  def precompile(args, _target) do
+    ElixirMake.Compiler.compile(args)
+    :ok
+  end
+end

mix.exs

@@ -25,7 +25,8 @@ defmodule Kinda.MixProject do
     [
       {:ex_doc, ">= 0.0.0", only: :dev, runtime: false},
       {:rustler_precompiled, "~> 0.5"},
-      {:zig_parser, "~> 0.1.0"}
+      {:zig_parser, "~> 0.1.0"},
+      {:elixir_make, "~> 0.4", runtime: false}
     ]
   end