Problems compiling 2.6.2 on RHEL

I am trying to build version 2.6.2 on a RedHat Enterprise box.

It stops at:

bison -y ftpcmd.y
ftpcmd.y:197.9: syntax error, unexpected "="
ftpcmd.y:205.9: syntax error, unexpected "="
ftpcmd.y:228.17-18: $2 of `cmd' has no declared type
ftpcmd.y:260.17-18: $2 of `cmd' has no declared type
ftpcmd.y:271.17-18: $2 of `cmd' has no declared type
ftpcmd.y:310.55-56: $4 of `cmd' has no declared type
ftpcmd.y:311.17-18: $2 of `cmd' has no declared type
ftpcmd.y:312.25-26: $4 of `cmd' has no declared type
ftpcmd.y:325.55-56: $4 of `cmd' has no declared type
ftpcmd.y:326.17-18: $2 of `cmd' has no declared type
ftpcmd.y:327.25-26: $4 of `cmd' has no declared type
ftpcmd.y:340.45-46: $4 of `cmd' has no declared type
ftpcmd.y:341.17-18: $2 of `cmd' has no declared type
ftpcmd.y:347.50-51: $4 of `cmd' has no declared type
ftpcmd.y:347.54-55: invalid $ value
ftpcmd.y:347.54-55: $8 of `cmd' has no declared type
ftpcmd.y:348.17-18: $2 of `cmd' has no declared type
ftpcmd.y:354.55-56: $4 of `cmd' has no declared type
ftpcmd.y:355.17-18: $2 of `cmd' has no declared type
ftpcmd.y:355.23-24: $4 of `cmd' has no declared type
ftpcmd.y:355.53-54: $4 of `cmd' has no declared type
ftpcmd.y:357.41-42: $4 of `cmd' has no declared type
...
...


$ bison --version
bison (GNU Bison) 1.875c
Written by Robert Corbett and Richard Stallman.

Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


-Thanks
Steve More