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-rw-r--r--ext/stringio/extconf.rb6
1 files changed, 5 insertions, 1 deletions
diff --git a/ext/stringio/extconf.rb b/ext/stringio/extconf.rb
index ad8650dce2..553732f79c 100644
--- a/ext/stringio/extconf.rb
+++ b/ext/stringio/extconf.rb
@@ -1,3 +1,7 @@
# frozen_string_literal: false
require 'mkmf'
-create_makefile('stringio')
+if RUBY_ENGINE == 'ruby'
+ create_makefile('stringio')
+else
+ File.write('Makefile', dummy_makefile("").join)
+end