"Peter J. Braam" wrote:
> > coda-src/libal
> >   lot's of undefined references to yydebug.
> > 
> >   yydebug only exists when YYDEBUG != 0 (bison?).
> >   adding `int yydebug;' works for me. But it is better (and portable to
> >   yacc) when all references to yydebug are conditonally compiled with
> >   #if YYDEBUG != 0 / #endif, but it isn't pretty. (YYDEBUG needs to be
> >   defined in the parsepdb.h file etc.)
> 
> Whenever you have fixed it in the past, this breaks here.  I'm not your
> boss (yet) but would you mind coming up with a generic solution; an #ifdef
> YYDEBUG sounds fine ... But don't break our stuff!!! 

This works for me. The debugging stuff in bison is only compiled
conditionally , this adds the same #if around the debugging code in
libal.

patch against coda-src/libal.
====================================================================
--- parsepdb.h.orig	Wed Jan  8 22:49:43 1997
+++ parsepdb.h	Fri May 15 17:35:02 1998
@@ -56,7 +56,7 @@
 */
 
 
-
+#define YYDEBUG 0
 
 #define MAXSTRLEN 100
 
--- parsepdb.lex.orig	Sat Jan 18 20:18:31 1997
+++ parsepdb.lex	Fri May 15 17:39:00 1998
@@ -74,7 +74,11 @@
 int yylook(); /* forward refs; lex doesn't emit defs for C++ */
 int yyback(int *p, int m); /* ditto */
 
-#define RETURN(Arg) if (yydebug != 0) printf("Lex: token:%d\tvalue:'%s'\n",Arg,yylval);return(Arg);
+#if YYDEBUG != 0
+# define RETURN(Arg) if (yydebug != 0) printf("Lex: token:%d\tvalue:'%s'\n",Arg,yylval);return(Arg);
+#else
+# define RETURN(Arg) return(Arg);
+#endif
 #define YYLVAL 1000 /* length of yytext */
 
 %}
--- parsepdb.yacc.orig	Sun Dec 21 00:34:26 1997
+++ parsepdb.yacc	Fri May 15 17:38:54 1998
@@ -82,7 +82,6 @@
 #include "pcf.h"
 #include "parsepdb.h"
 
-#define	YYDEBUG 0
 #define DIE(x) {perror(x); fflush(stderr); abort();}
 
 int temp_Bound;
@@ -108,15 +107,21 @@
 %%	    /* YACC rules section */
 OneDef		:	EmptyDef
 			    {
+#if YYDEBUG != 0
 			    if (yydebug) PrintEntry();
+#endif
 			    }
 		|	UserDef
 			    {
+#if YYDEBUG != 0
 			    if (yydebug) PrintEntry();
+#endif
 			    }
 		|	GroupDef
 			    {
+#if YYDEBUG != 0
 			    if (yydebug) PrintEntry();
+#endif
 			    }
 		;
 
--- pcfgen.c.orig	Tue Apr 14 22:51:48 1998
+++ pcfgen.c	Fri May 15 17:37:02 1998
@@ -105,7 +105,11 @@
 
 #define ABORT {flock(fileno(yyin), LOCK_UN); fclose(yyin); exit(-1);}	
 
-    AvoidCheckSum = MyDebugFlag = yydebug = 0;
+    AvoidCheckSum = MyDebugFlag = 0;
+#if YYDEBUG != 0
+    yydebug = 0;
+#endif
+
     FileRoot[0] = '\0';
     for (i = 1; i < argc; i++)
 	{