Avoid $` $& $' in libraries

[perl5.git] / EXTERN.h

diff --git a/EXTERN.h b/EXTERN.h
index 793da6d..5741fbf 100644 (file)
--- a/EXTERN.h
+++ b/EXTERN.h
@@ -1,13 +1,33 @@
-/* $Header: EXTERN.h,v 2.0 88/06/05 00:07:46 root Exp $
+/*    EXTERN.h
+ *
+ *    Copyright (c) 1991-1994, Larry Wall
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
  *
- * $Log:       EXTERN.h,v $
- * Revision 2.0  88/06/05  00:07:46  root
- * Baseline version 2.0.
- * 
  */
 
+/*
+ * EXT  designates a global var which is defined in perl.h
+ * dEXT designates a global var which is defined in another
+ *      file, so we can't count on finding it in perl.h
+ *      (this practice should be avoided).
+ */
 #undef EXT
-#define EXT extern
+#undef dEXT
+#undef EXTCONST
+#undef dEXTCONST
+#if defined(VMS) && !defined(__GNUC__)
+#  define EXT globalref
+#  define dEXT globaldef {"$GLOBAL_RW_VARS"} noshare
+#  define EXTCONST globalref
+#  define dEXTCONST globaldef {"$GLOBAL_RO_VARS"} readonly
+#else
+#  define EXT extern
+#  define dEXT
+#  define EXTCONST extern const
+#  define dEXTCONST const
+#endif
 
 #undef INIT
 #define INIT(x)