1 files changed, 5 insertions, 1 deletions
diff --git a/XSUB.h b/XSUB.h
index 580d639c07..51112a944e 100644
--- a/XSUB.h
+++ b/XSUB.h
@@ -107,7 +107,11 @@ is a lexical $_ in scope.
 #  if defined(HASATTRIBUTE_UNUSED) && !defined(__cplusplus)
 #    define XS(name) void name(pTHX_ CV* cv __attribute__unused__)
 #  else
-#    define XS(name) void name(pTHX_ CV* cv)
+#    ifdef __cplusplus
+#      define XS(name) extern "C" void name(pTHX_ CV* cv)
+#    else
+#      define XS(name) void name(pTHX_ CV* cv)
+#    endif
 #  endif
 #endif