yacc error on compiling under redhat 6.1

i just downloaded the cvs version on my redhat 6.1 but running make i got this error: byacc -p zend -v -d ./zend-parser.y -o zend-parser.c usage: byacc [-dlrtv] [-b file_prefix] [-p symbol_prefix] filename make[1]: *** [zend-parser.c] Error 1 where is the problem? on my freebsd account i succesfully built it. can i create a source-distribution from my freebsd box and then build it on the linux box, so that i don't need yacc on the linux side?? if so, how? ---------------------------------------------------- Stefano Bagnara (Data Sail S.r.l.) Email: root@bago.org WWW: http://bago.org ICQ: 16554317