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-rw-r--r--include/ruby/intern.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index 8c3c32e226..338c8bb1b7 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -21,6 +21,11 @@ extern "C" {
#endif
#endif
+#include "ruby/defines.h"
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
+
#ifdef HAVE_STDARG_PROTOTYPES
# include <stdarg.h>
#else