From 318ee7db652fc3425c1142c91aa4ff365a9a0ead Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Tue, 17 Feb 2026 14:51:05 +0100
Subject: [PATCH] Recompile when config.yml changes

* Fixes https://github.com/ruby/prism/issues/3931.
* The first line is the default one, we want to keep that default dependency too.
* Some docs about this: https://docs.ruby-lang.org/en/4.0/MakeMakefile.html
---
 ext/prism/depend | 2 ++
 prism.gemspec    | 2 ++
 2 files changed, 4 insertions(+)
 create mode 100644 ext/prism/depend

diff --git a/ext/prism/depend b/ext/prism/depend
new file mode 100644
index 0000000000..ac0e7a9bb3
--- /dev/null
+++ b/ext/prism/depend
@@ -0,0 +1,2 @@
+$(OBJS): $(HDRS) $(ruby_headers)
+$(OBJS): $(srcdir)/../../config.yml
diff --git a/prism.gemspec b/prism.gemspec
index c5c315fc8d..eb558ce6c2 100644
--- a/prism.gemspec
+++ b/prism.gemspec
@@ -42,6 +42,8 @@ Gem::Specification.new do |spec|
     "docs/serialization.md",
     "docs/testing.md",
     "ext/prism/api_node.c",
+    "ext/prism/depend",
+    "ext/prism/extconf.rb",
     "ext/prism/extension.c",
     "ext/prism/extension.h",
     "include/prism.h",