From: zeil AT cs DOT odu DOT edu (Steven J. Zeil) Subject: Re: Compiling Bison-generated parsers with MS VC++? 13 Oct 1998 08:28:18 -0700 Message-ID: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: gnu-win32 AT cygnus DOT com >>/cygnus/b19/share/bison.simple(333) : error C2065: 'alloca' : undeclared >>identifier >>/cygnus/b19/share/bison.simple(387) : error C2065: 'yylex' : undeclared >>identifier > >SInce VC++ is a C++ compiler, both yyerror and yylex prototypes have to >be declared before they are used (at the top of the Bison grammar. I >don't >recall having a problem with alloca, but I'll try to check that out. VC++ declares alloca in , so I have found it necessary to add an #include for that file to the declarations section of my bison inputs. I have also found a problem with isatty occurring in scanners generated by some versions of flex. The VC++ header for this does not put it in an "extern "C" {}", leading to errors when the program is linked. So I wind up adding the following: #ifdef _MSC_VER #include extern "C" { int isatty (int handle); } #endif to cover both problems. ------------------------- Steven J. Zeil Dept. of Computer Science http://www.cs.odu.edu/~zeil Old Dominion University Norfolk, VA 23529 - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request AT cygnus DOT com" with one line of text: "help".