X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/4633a7c4bad06b471d9310620b7fe8ddd158cccd..27ceb5977435fd911083ce193382f26ccc3af24f:/EXTERN.h

diff --git a/EXTERN.h b/EXTERN.h
index dedd379..58ca37a 100644
--- a/EXTERN.h
+++ b/EXTERN.h
@@ -1,6 +1,7 @@
 /*    EXTERN.h
  *
- *    Copyright (c) 1991-1994, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -15,12 +16,43 @@
  */
 #undef EXT
 #undef dEXT
+#undef EXTCONST
+#undef dEXTCONST
 #if defined(VMS) && !defined(__GNUC__)
+    /* Suppress portability warnings from DECC for VMS-specific extensions */
+#  ifdef __DECC
+#    pragma message disable (GLOBALEXT,NOSHAREEXT,READONLYEXT)
+#  endif
 #  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
+#  if (defined(WIN32) || defined(__SYMBIAN32__)) && !defined(PERL_STATIC_SYMS)
+#    if defined(PERLDLL) || defined(__SYMBIAN32__)
+#      define EXT extern __declspec(dllexport)
+#      define dEXT 
+#      define EXTCONST extern __declspec(dllexport) const
+#      define dEXTCONST const
+#    else
+#      define EXT extern __declspec(dllimport)
+#      define dEXT 
+#      define EXTCONST extern __declspec(dllimport) const
+#      define dEXTCONST const
+#    endif
+#  else
+#    if defined(__CYGWIN__) && defined(USEIMPORTLIB)
+#      define EXT extern __declspec(dllimport)
+#      define dEXT 
+#      define EXTCONST extern __declspec(dllimport) const
+#      define dEXTCONST const
+#    else
+#      define EXT extern
+#      define dEXT
+#      define EXTCONST extern const
+#      define dEXTCONST const
+#    endif
+#  endif
 #endif
 
 #undef INIT