2 files changed, 12 insertions, 4 deletions
diff --git a/ext/erb/escape/extconf.rb b/ext/erb/escape/extconf.rb
index 9dec05f2c6..c1002548ad 100644
--- a/ext/erb/escape/extconf.rb
+++ b/ext/erb/escape/extconf.rb
@@ -1,2 +1,7 @@
 require 'mkmf'
-create_makefile 'erb/escape'
+
+if RUBY_ENGINE == 'truffleruby'
+  File.write('Makefile', dummy_makefile($srcdir).join)
+else
+  create_makefile 'erb/escape'
+end
diff --git a/lib/erb/util.rb b/lib/erb/util.rb
index c24a175199..0c1e7482a8 100644
--- a/lib/erb/util.rb
+++ b/lib/erb/util.rb
@@ -4,10 +4,13 @@
 # A subset of ERB::Util. Unlike ERB::Util#html_escape, we expect/hope
 # Rails will not monkey-patch ERB::Escape#html_escape.
 begin
-  require 'erb/escape'
-rescue LoadError # JRuby can't load .so
+  # We don't build the C extension for JRuby, TruffleRuby, and WASM
+  if $LOAD_PATH.resolve_feature_path('erb/escape')
+    require 'erb/escape'
+  end
+rescue LoadError # resolve_feature_path raises LoadError on TruffleRuby 22.3.0
 end
-unless defined?(ERB::Escape) # JRuby
+unless defined?(ERB::Escape)
   module ERB::Escape
     def html_escape(s)
       CGI.escapeHTML(s.to_s)