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-rw-r--r--include/ruby/ruby.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index b8a7bba8c5..1876ea4d71 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -58,6 +58,10 @@ extern "C" {
# include <intrinsics.h>
#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
#include <stddef.h>
#include <stdio.h>