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-rw-r--r--ext/clogger_ext/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/clogger_ext/extconf.rb b/ext/clogger_ext/extconf.rb
index 523b314..b2c0891 100644
--- a/ext/clogger_ext/extconf.rb
+++ b/ext/clogger_ext/extconf.rb
@@ -22,6 +22,7 @@ begin
   have_func('rb_thread_call_without_gvl', 'ruby/thread.h')
   have_func('rb_thread_blocking_region', 'ruby.h')
   have_func('rb_thread_io_blocking_region', 'ruby.h')
+  have_func('rb_obj_respond_to', 'ruby/intern.h')
   create_makefile('clogger_ext')
 rescue Object => err
   warn "E: #{err.inspect}"