From abae20efae1b93ee686f2c0a7b5a7197e386b83a Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Tue, 10 Jan 2023 14:17:24 +0100
Subject: [PATCH] Skip compilation on TruffleRuby

* Running libv8 on GraalVM LLVM is unlikely to ever work, instead using
  Graal.js makes more sense. This is already the case in mini_racer.
  libv8-node is a necessary dependency of mini_racer on CRuby, so for
  TruffleRuby the extconf.rb simply creates a dummy Makefile.
---
 .github/workflows/build.yml | 10 ++++++++++
 ext/libv8-node/extconf.rb   |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1c521a2..b4039c9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,6 +25,16 @@ jobs:
        run: apt-get update && apt-get install -y shellcheck
      - name: Shellcheck
        run: shellcheck libexec/*
+  compile-truffleruby:
+    name: Compile on truffleruby
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: truffleruby
+          bundler-cache: true
+      - run: bundle exec rake compile
   build-ruby:
     name: Build (ruby)
     outputs:
diff --git a/ext/libv8-node/extconf.rb b/ext/libv8-node/extconf.rb
index 20bc370..c2d97d3 100644
--- a/ext/libv8-node/extconf.rb
+++ b/ext/libv8-node/extconf.rb
@@ -1,6 +1,12 @@
 # frozen_string_literal: true
 
 require 'mkmf'
+
+if RUBY_ENGINE == "truffleruby"
+  File.write("Makefile", dummy_makefile($srcdir).join(""))
+  return
+end
+
 create_makefile('libv8-node')
 
 require File.expand_path('location', __dir__)