fix make parser on linux

MathEval/Makefile

-# $Id: Makefile,v 1.1 2004-05-12 02:02:21 geuzaine Exp $
+# $Id: Makefile,v 1.2 2004-05-12 18:38:44 geuzaine Exp $
 #
 # Copyright (C) 1997-2004 C. Geuzaine, J.-F. Remacle
 #
@@ -48,6 +48,7 @@ parser:
 	bison --output parser.cpp -pme -d parser.y 
 	flex -oscanner.cpp -Pme scanner.l
 	if [ -r parser.cpp.h ]; then mv parser.cpp.h parser.h ; fi
+	if [ -r parser.hpp ]; then mv parser.hpp parser.h ; fi
 
 clean:
 	rm -f *.o

MathEval/parser.h

+#ifndef BISON_PARSER_HPP
+# define BISON_PARSER_HPP
+
+#ifndef YYSTYPE
 typedef union {
   Node *node;
   Record *record;
-} YYSTYPE;
+} yystype;
+# define YYSTYPE yystype
+# define YYSTYPE_IS_TRIVIAL 1
+#endif
 # define	NUMBER	257
 # define	VARIABLE	258
 # define	FUNCTION	259
@@ -9,3 +16,5 @@ typedef union {
 
 
 extern YYSTYPE melval;
+
+#endif /* not BISON_PARSER_HPP */

MathEval/scanner.cpp

@@ -20,7 +20,7 @@
 /* A lexical scanner generated by flex */
 
 /* Scanner skeleton version:
- * $Header: /cvsroot/gmsh/MathEval/scanner.cpp,v 1.2 2004-05-12 18:14:20 geuzaine Exp $
+ * $Header: /cvsroot/gmsh/MathEval/scanner.cpp,v 1.3 2004-05-12 18:38:44 geuzaine Exp $
  */
 
 #define FLEX_SCANNER