dllexport assumed." when building with -DDEBUGGING by declaring
getenv() with the same __declspec as in Microsoft's <stdlib.h>.
MinGW/GCC is happy with that too, but Borland doesn't understand
_CRTIMP so don't bother for Borland since it doesn't warn anyway.
p4raw-id: //depot/perl@31350
#define YYERROR goto yyerrlab
#if YYDEBUG
+# if defined(WIN32) && !defined(__BORLANDC__)
+EXTERN_C _CRTIMP char *getenv(const char *);
+# else
EXTERN_C char *getenv(const char *);
+# endif
#endif
int