ext/patron/extconf.rb in patron-0.4.20 vs ext/patron/extconf.rb in patron-0.5.0

@@ -42,8 +42,10 @@
 if CONFIG['CC'] =~ /gcc/
   $CFLAGS << ' -pedantic -Wall'
 end
 
 $defs.push("-DUSE_TBR")
-$defs.push("-DHAVE_TBR") if have_func('rb_thread_blocking_region')
+$defs.push("-DHAVE_THREAD_H") if have_header('ruby/thread.h')
+$defs.push("-DHAVE_TBR") if have_func('rb_thread_blocking_region', 'ruby.h')
+$defs.push("-DHAVE_TCWOGVL") if have_header('ruby/thread.h') && have_func('rb_thread_call_without_gvl', 'ruby/thread.h')
 
 create_makefile 'patron/session_ext'