seeking help re. undefined reference to `rpl_fprintf' in yyerror

[thiru ramakrishnan]

Hello,

I just started using Bison 2.5 (on Ubuntu 9.04 - the Jaunty Jackalope).

I get the error referred to above. I've looked in help-bison Archives 
and also searched on the Web for rpl_fprintf but don't find any info.

Here is the relevant portion of the gcc output:

--------
gcc -DYYDEBUG=1    -c -o lex.yy.o lex.yy.c
gcc -DYYDEBUG=1 -o try try.tab.o lex.yy.o -L/usr/local/bison/lib 
-L/usr/local/flex/lib -ly -lfl -lm
/usr/local/bison/lib/liby.a(yyerror.o): In function `yyerror':
/home/ramki/bison-2.5/lib/yyerror.c:27: undefined reference to `rpl_fprintf'
collect2: ld returned 1 exit status
--------

Any idea which library would have this binary?

Thank you.

Ramki