Index: include/osl/endian.h
--- include/osl/endian.h.orig
+++ include/osl/endian.h
@@ -60,6 +60,13 @@ extern "C" {
 #   elif defined _BIG_ENDIAN
 #       define OSL_BIGENDIAN
 #   endif
+#elif defined OPENBSD
+#   include <endian.h>
+#   if BYTE_ORDER == LITTLE_ENDIAN
+#       define OSL_LITENDIAN
+#   elif BYTE_ORDER == BIG_ENDIAN
+#       define OSL_BIGENDIAN
+#   endif
 #elif defined __sun
 #   include <sys/isa_defs.h>
 #   if defined _LITTLE_ENDIAN