__hpux -> hpux equivalence
diff --git a/Python/importdl.c b/Python/importdl.c
index 01d9c16..e802df1 100644
--- a/Python/importdl.c
+++ b/Python/importdl.c
@@ -54,6 +54,10 @@
 
 /* Configure dynamic linking */
 
+#ifdef __hpux
+#define hpux
+#endif
+
 #ifdef hpux
 #define DYNAMIC_LINK
 #include <errno.h>