Prevent JRuby build failure by sending to Kernel.require

Author: JonRowe

lib/rspec/support.rb

@@ -13,7 +13,14 @@ module Support
     # it can resolve the file relative to one of the dirs.
     def self.define_optimized_require_for_rspec(lib, &require_relative)
       define_singleton_method("require_rspec_#{lib}") do |f|
-        require_relative.call("#{lib}/#{f}")
+        if RUBY_PLATFORM == 'java' && !Kernel.respond_to?(:require)
+          # JRuby 9.1.17.0 has developed a regression for require
+          (class << self; self; end).__send__(:define_method, name) do |f|
+            Kernel.send(:require, "rspec/#{lib}/#{f}")
+          end
+        else
+          require_relative.call("#{lib}/#{f}")
+        end
       end
     end