1 files changed, 11 insertions, 0 deletions
diff --git a/perl.h b/perl.h
index 35bc28a53a..16b0c7c5ef 100644
--- a/perl.h
+++ b/perl.h
@@ -3328,6 +3328,17 @@ struct nexttoken {
 };
 #endif
 
+/* macros to define bit-fields in structs. */
+#ifndef PERL_BITFIELD8
+#  define PERL_BITFIELD8 unsigned
+#endif
+#ifndef PERL_BITFIELD16
+#  define PERL_BITFIELD16 unsigned
+#endif
+#ifndef PERL_BITFIELD32
+#  define PERL_BITFIELD32 unsigned
+#endif
+
 #include "sv.h"
 #include "regexp.h"
 #include "util.h"