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[perl5.git] / EXTERN.h

/*    EXTERN.h
 *
 *    Copyright (c) 1991-1999, 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.
 *
 */

/*
 * 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
#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
#  if defined(WIN32) && !defined(PERL_STATIC_SYMS) && !defined(__GNUC__) && !defined(PERL_OBJECT)
#    ifdef PERLDLL
#      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
#define INIT(x)

#undef DOINIT