* What version of bison/yacc do you have? Also, if you are using an
autoconf-based version, do you see any errors in the configure log?
I have bison-1.75. I have compiled from spurce. Yes, I have errors...
.
.
configure:2914: gcc -o conftest -g -O2 conftest.c -lfl >&5
ld: fatal: library -lfl: not found
ld: fatal: File processing errors. No output written to conftest
collect2: ld returned 1 exit status
-lfl (libfl.a) is the Flex library, -ll (libl.a) is the lex library.
In order to have a functional installation of either flex or lex, you
need to have both the programs (flex/lex) and the libraries
(libfl.a/libl.a). Bison and yacc use liby.a.