1 files changed, 4 insertions, 0 deletions
diff --git a/ruby.h b/ruby.h
index 1597a43ab3..7db1baa8e5 100644
--- a/ruby.h
+++ b/ruby.h
@@ -19,6 +19,10 @@ extern "C" {
 #include "config.h"
 #include "defines.h"
 
+#if defined HAVE__MKTEMP && !defined mktemp
+#define mktemp _mktemp
+#endif
+
 #ifdef HAVE_STDLIB_H
 # include <stdlib.h>
 #endif