1 files changed, 5 insertions, 1 deletions

diff --git a/perl.h b/perl.h
index f54c559816..a82e0b14c5 100644
--- a/perl.h
+++ b/perl.h
@@ -199,7 +199,11 @@
 #endif
 
 #ifndef PERL_UNUSED_DECL
-#  define PERL_UNUSED_DECL __attribute__unused__
+#  ifdef HASATTRIBUTE_UNUSED
+#    define PERL_UNUSED_DECL __attribute__unused__
+#  else
+#    define PERL_UNUSED_DECL
+#  endif
 #endif
  
 /* gcc -Wall: